Die casting machine for valve seat machining

Abstract

The utility model relates to a die-casting machine for valve seat processing, which comprises an injection rod, a hydraulic device for driving the injection rod to move and a heat conduction box, a heat exchange component is arranged in the heat conduction box, a heat conduction pipe group is arranged in the injection rod, two ends of the heat conduction pipe group are communicated with the heat exchange component through a liquid inlet pipe and a liquid discharge pipe, and a water discharge pipe is fixed at the lower end of the heat conduction box. The cooling mechanism comprises a cooling box, a top plate, a piston plate, a cooling-water machine, a spring and a telescopic rod, the cooling box is fixed to the lower end of the drainage pipe, a segmentation box is fixed to the interior of the cooling box and close to the drainage pipe, and a notch is formed in the top plate of the segmentation box. According to the die-casting machine for valve seat machining, by arranging the cooling mechanism, when heat on the flow dividing pipe is absorbed and discharged through cooling liquid, the cooling liquid flowing back at the water discharging pipe can be divided into multiple sections through the cooling mechanism for cooling and heat dissipation, and the cooling efficiency of the flowing-back cooling liquid is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valve seat processing, in particular to a die-casting machine for valve seat processing. Background Technique

[0002] A valve seat is a component used to control the flow of gas (fuel gas, natural gas, coal gas), usually installed at the bottom of a valve. Its main function is to control the flow direction and flow rate of the fluid when the valve is in different working states. When processing the valve seat, a die-casting machine is required, and a die-casting machine is a machine used for die-casting, including two types: hot chamber and cold chamber. The latter is further divided into two types: vertical and horizontal; under pressure, the die-casting machine injects molten metal liquid into the mold for cooling and forming, and a solid metal casting can be obtained after opening the mold.

[0003] In the related technology, the Chinese patent document with the application number CN202322452220.5 proposed a die-casting injection device. When performing the injection work, the hydraulic device drives the injection rod to move to maintain pressure for the die-casting cavity. At this time, the heat-conducting oil in the heat dissipation cavity absorbs heat from the strengthening column and the injection rod and conducts it to the heat-conducting pipe group, heating the heat-conducting oil in the heat-conducting pipe group. The liquid inlet pump works to pump the low-temperature heat-conducting oil in the liquid inlet pipe into the heat-conducting pipe group, pushing the high-temperature heat-conducting oil in the heat-conducting pipe group out from the liquid discharge pipe and into the heat exchange component. The high-temperature heat-conducting oil evenly enters the shunt pipes through the shunt box. Cooling water is introduced into the water inlet pipe, and the heat on the shunt pipes is absorbed by the cooling water, thereby reducing the temperature of the heat-conducting oil in the shunt pipes. The high-temperature cooling water is discharged from the drain pipe, and the cooled heat-conducting oil is re-transported to the liquid inlet pipe by the liquid inlet pump to complete the cycle.

[0004] Regarding the above-mentioned related technology, the inventor believes that there are the following defects: The device absorbs the heat on the shunt pipes through the cooling water, thereby reducing the temperature of the heat-conducting oil in the shunt pipes. The high-temperature cooling water is discharged from the drain pipe, but the liquid in the drain pipe absorbs the heat of the object to be cooled, increasing the temperature of the returned coolant. In the prior art, the returned coolant is usually directly mixed with the coolant that has not absorbed heat, resulting in an overall increase in the temperature of the coolant in the coolant tank, thereby reducing the cooling effect of the coolant and making the cooling effect of the subsequent circulating coolant on the heat-conducting oil in the shunt pipes worse. In view of this, a die-casting machine for valve seat processing is proposed to solve the above problems. Content of the Utility Model

[0005] The main purpose of the utility model is to provide a die-casting machine for valve seat processing, which solves the problems proposed in the above background technique.

[0006] To achieve the above object, the utility model provides the following technical solution: A die-casting machine for valve seat processing, including a shot sleeve, a hydraulic device for driving the movement of the shot sleeve, and a heat conduction box. An heat exchange assembly is provided in the heat conduction box, and a heat conduction pipe group is provided in the shot sleeve. Both ends of the heat conduction pipe group are communicated with the heat exchange assembly through a liquid inlet pipe and a liquid discharge pipe. A drain pipe is fixed at the lower end of the heat conduction box, a cooling mechanism is provided on the drain pipe, a supply assembly is provided on the cooling mechanism, and a water inlet pipe is fixed to the heat conduction box;

[0007] The cooling mechanism includes a cooling box, a top plate, a piston plate, a chiller, a spring, and a telescopic rod. The lower end of the drain pipe is fixed with a cooling box, a partition box is fixed in the cooling box, the partition box is close to the drain pipe, the top plate of the partition box has a notch, a piston plate is provided in the partition box, and the piston plate divides the partition box into a first cavity and a second cavity. Relative to the second cavity, the first cavity is closer to the drain pipe. The piston plate includes a flat portion and a U-shaped portion connected to the flat portion. The opening of the U-shaped portion faces the second cavity, and the U-shaped portion is hermetically and slidably connected to the notch;

[0008] A rotatable gear is horizontally arranged in the partition box, a sliding rod is fixed in the partition box, a sliding sleeve is slidably installed on the sliding rod, a rack meshing with the gear is fixed on one side of the sliding sleeve, a cross bar is fixed at the top end of the sliding sleeve, a support rod is fixed on the cross bar, and one end of the support rod is fixedly connected to the piston plate and always has a tendency to drive the piston plate towards the second cavity.

[0009] An air supply pipe is fixed on one side of the partition box, and an air discharge pipe is fixed at the other end of the partition box.

[0010] A telescopic rod is provided in the partition box, a spring is sleeved on the telescopic rod, one end of the telescopic rod is fixedly connected to the inner wall of the partition box, and the other end is fixedly connected to the cross bar.

[0011] Further, the number of the notches is multiple, the multiple notches are arranged at intervals along the length direction of the top plate, the number of the flat portions and the U-shaped portions are both multiple, and the multiple flat portions and U-shaped portions are alternately arranged.

[0012] Further, the flat portion is a sheet-like structure, the U-shaped portion is a sheet-like structure, a limiting plate is fixedly connected to the top end of the U-shaped portion, and the limiting plate can abut against the top plate.

[0013] Further, multiple clips are missing from the outside of the gear, there are two gears, an external motor for driving the rotation of the gear is fixed on the cooling box, an external blower is fixed on the cooling box, the output end of the external blower is communicated with the air supply pipe, and the other end of the air discharge pipe is located outside the cooling box.

[0014] Further, a chiller for cooling the coolant in the cooling box is fixed at the lower end of the cooling box.

[0015] Furthermore, the supply component includes a water pump, a first water pipe, and a second water pipe. The water pump is fixedly installed on the cooling box. The water inlet end of the water pump is connected to the second water pipe, and the second water pipe is connected to the cooling box. The water outlet end of the water pump is connected to the first water pipe, and one end of the first water pipe is connected to the water inlet pipe.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0017] For the die-casting machine used for machining the valve seat, by providing a cooling mechanism, when the cooling liquid absorbs and discharges the heat on the shunt pipe, the cooling mechanism can divide the cooling liquid flowing back at the inlet and drain pipes into multiple segments for cooling and heat dissipation, improving the cooling efficiency of the flowing-back cooling liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the cooling mechanism of the present utility model;

[0020] Figure 3 is a schematic side view structural diagram of the cross bar and the sliding rod of the present utility model;

[0021] Figure 4 for the present utility model Figure 2 is an enlarged view of part A in;

[0022] Figure 5 for the present utility model Figure 2 is an enlarged view of part B in.

[0023] In the figure: 1 hydraulic device, 2 liquid inlet pipe, 3 injection rod, 4 supply component, 401 water pump, 402 first water pipe, 403 second water pipe, 5 cooling mechanism, 501 partition box, 502 cross bar, 503 sliding rod, 504 chiller, 505 cooling box, 506 gear, 507 rack, 508 telescopic rod, 509 spring, 510 U-shaped part, 511 limiting plate, 512 top plate, 513 flat part, 514 support rod, 515 first cavity, 516 notch, 517 sliding sleeve, 518 piston plate, 519 second cavity, 520 air supply pipe, 521 exhaust pipe, 6 drain pipe, 7 heat conduction box, 8 water inlet pipe, 9 liquid discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1-2 In this embodiment, a die-casting machine for processing a valve seat includes a shot sleeve 3, a hydraulic device 1 for driving the movement of the shot sleeve 3, and a heat conduction box 7. An heat exchange assembly is provided in the heat conduction box 7. A heat conduction pipe group is provided in the shot sleeve 3. Both ends of the heat conduction pipe group are communicated with the heat exchange assembly through a liquid inlet pipe 2 and a liquid discharge pipe 9. A drain pipe 6 is fixed to the lower end of the heat conduction box 7. A cooling mechanism 5 is provided on the drain pipe 6. A supply assembly 4 is provided on the cooling mechanism 5. A water inlet pipe 8 is fixed to the heat conduction box 7.

[0026] The cooling mechanism 5 includes a cooling box 505, a top plate 512, a piston plate 518, a chiller 504, a spring 509, and a telescopic rod 508. The lower end of the drain pipe 6 is fixed with a cooling box 505. A partition box 501 is fixed in the cooling box 505. The partition box 501 is close to the drain pipe 6. The top plate 512 of the partition box 501 has a notch 516. A piston plate 518 is provided in the partition box 501. The piston plate 518 divides the partition box 501 into a first cavity 515 and a second cavity 519. Relative to the second cavity 519, the first cavity 515 is closer to the drain pipe 6. The piston plate 518 includes a flat portion 513 and a U-shaped portion 510 connected to the flat portion 513. The opening of the U-shaped portion 510 faces the second cavity 519. The U-shaped portion 510 is hermetically and slidably connected to the notch 516.

[0027] A rotatable gear 506 is transversely provided in the partition box 501. A slide bar 503 is fixed in the partition box 501. A slide sleeve 517 is slidably mounted on the slide bar 503. A rack 507 meshing with the gear 506 is fixed to one side of the slide sleeve 517. A cross bar 502 is fixed to the top end of the slide sleeve 517. A support rod 514 is fixed to the cross bar 502. One end of the support rod 514 is fixedly connected to the piston plate 518 and always has a tendency to drive the piston plate 518 towards the second cavity 519.

[0028] An air supply pipe 520 is fixed to one side of the partition box 501. An exhaust pipe 521 is fixed to the other end of the partition box 501.

[0029] A telescopic rod 508 is provided in the partition box 501. A spring 509 is sleeved on the telescopic rod 508. One end of the telescopic rod 508 is fixedly connected to the inner wall of the partition box 501, and the other end is fixedly connected to the cross bar 502. Both ends of the spring 509 are fixed to the inner wall of the partition box 501 and the lower end of the cross bar 502 respectively.

[0030] A chiller 504 for cooling the coolant in the cooling box 505 is fixed to the lower end of the cooling box 505. The chiller 504 is used to cool the coolant.

[0031] The limiting plate 511 is a U-shaped structure, which includes a limiting piece and a folded edge. The folded edge extends along the surface of the limiting piece and the extending direction is toward the top plate 512 of the dividing box 501 . The folded edge can abut against the top plate 512 .

[0032] The device starts an external motor, which drives the gear 506 to rotate, and then the gear 506 engages the rack 507, so that the rack 507 drives the sleeve 517 to move upward, and the sleeve 517 drives the cross bar 502 to move, and the cross bar 502 drives the piston plate 518 to move in the direction away from the bottom wall of the second cavity 519. The U-shaped portion 510 of the piston plate 518 cools the returning coolant and dissipates heat. The cross bar 502 drives the support rod 514 to move. At this time, the spring 509 is stretched. When the gear 506 rotates to the missing clip, the gear 506 and the rack 507 are no longer engaged. The spring 509 is then set to pull the cross bar 502 back to the initial position, and the cross bar 502 drives the piston plate 518 to move in the direction close to the bottom wall of the second cavity 519.

[0033] Among them, the number of notches 516 is multiple, and the multiple notches 516 are arranged at intervals along the length direction of the top plate 512. The number of flat portions 513 and U-shaped portions 510 are respectively multiple, and the multiple flat portions 513 and U-shaped portions 510 are alternately arranged. In this way, the multiple notches 516 and the multiple U-shaped portions 510 increase the contact area between the piston plate 518 and the coolant at the return port, divide the returning coolant into multiple sections for cooling and heat dissipation, and improve the cooling effect of the returning coolant.

[0034] At the same time, the flat portion 513 is a sheet-like structure, and the U-shaped portion 510 is a sheet-like structure. The top end of the U-shaped portion 510 is fixedly connected to a limiting plate 511, and the limiting plate 511 can abut against the top plate 512. The width of the limiting plate 511 is greater than the width of the notch 516. In this way, the piston plate 518 is limited to prevent the U-shaped portion 510 from being separated from the notch 516 to connect the coolant tank and the partition box 501.

[0035] In addition, there are multiple clips missing on the outer side of gear 506, and there are two gears 506. An external motor for driving gear 506 to rotate is fixed on the cooling box 505, so that the external motor can drive gear 506 to rotate, and gear 506 rotates to the missing clip, so that gear 506 and rack 507 are no longer engaged, so that cross bar 502 can fall back, and an external fan is fixed on the cooling box 505, and the output end of the external fan is connected to the air supply duct 520, and the other end of the exhaust duct 521 is located outside the cooling box 505. By starting the external fan, the external fan transports wind into the second cavity 519 to drive the heat inside it and discharge it from the exhaust duct 521.

[0036] Please refer to the figure. The supply component 4 in this embodiment includes a water pump 401, a first water pipe 402, and a second water pipe 403. The water pump 401 is fixedly installed on the cooling tank 505. The water inlet end of the water pump 401 is connected to the second water pipe 403, and the second water pipe 403 is connected to the cooling tank 505. The water outlet end of the water pump 401 is connected to the first water pipe 402, and one end of the first water pipe 402 is connected to the water inlet pipe 8.

[0037] By starting the water pump 401, the water pump 401 conveys the cooling water to the first water pipe 402, and then the first water pipe 402 conveys it into the water inlet pipe 8, and the water inlet pipe 8 cools the heat exchange component inside the heat conduction box 7.

[0038] The working principle of the above embodiment is as follows:

[0039] When it is necessary to cool the cooling water, start the chiller 504 and the external motor. The external motor drives the gear 506 to rotate, and then the gear 506 meshes with the rack 507, so that the rack 507 drives the sliding sleeve 517 to move upward. The sliding sleeve 517 drives the cross bar 502 to move, and the cross bar 502 drives the piston plate 518 to move away from the bottom wall of the second cavity 519. The U-shaped part 510 of the piston plate 518 cools and dissipates the heat of the refluxing coolant. The cross bar 502 drives the support rod 514 to move. At this time, the spring 509 is stretched. When the gear 506 rotates to the missing clip, the gear 506 and the rack 507 are no longer meshed. Then, through the setting of the spring 509, the cross bar 502 is pulled back to the initial position, and the cross bar 502 drives the piston plate 518 to move towards the bottom wall of the second cavity 519. In this way, the U-shaped part 510 of the piston plate 518 cools and dissipates the heat of the refluxing coolant. Then, by starting the external fan, the external fan conveys the air into the second cavity 519 to drive the heat inside it to be discharged from the exhaust pipe 521.

[0040] Subsequently, by starting the water pump 401, the water pump 401 conveys the cooling water to the first water pipe 402, and then the first water pipe 402 conveys it into the water inlet pipe 8, and the water inlet pipe 8 cools the heat exchange component inside the heat conduction box 7.

[0041] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A die-casting machine for valve seat processing, comprising a shot rod (3), a hydraulic device (1) for driving the shot rod (3) to move, and a heat conduction box (7), characterized in that: The heat transfer box (7) is provided with a heat exchange component, the injection rod (3) is provided with a heat transfer pipe group, the two ends of the heat transfer pipe group are connected to the heat transfer component through a liquid inlet pipe (2) and a liquid discharge pipe (9), a drain pipe (6) is fixed at the lower end of the heat transfer box (7), a cooling mechanism (5) is provided on the drain pipe (6), a supply component (4) is provided on the cooling mechanism (5), and a water inlet pipe (8) is fixed to the heat transfer box (7); The cooling mechanism (5) comprises a cooling box (505), a top plate (512), a piston plate (518), a water chiller (504), a spring (509) and a telescopic rod (508). The cooling box (505) is fixed at the lower end of the drain pipe (6). A split box (501) is fixed inside the cooling box (505). The split box (501) is close to the drain pipe (6). The top plate (512) of the split box (501) has a notch (516). The split box (501) is provided with a piston plate (518). 8), the piston plate (518) divides the split box (501) into a first cavity (515) and a second cavity (519), the first cavity (515) being closer to the drain pipe (6) than the second cavity (519), the piston plate (518) comprising a flat portion (513) and a U-shaped portion (510) connected to the flat portion (513), the opening of the U-shaped portion (510) facing the second cavity (519), and the U-shaped portion (510) being sealed and slidably connected to the notch (516); A rotatable gear (506) is transversely arranged in the partition box (501), a slide bar (503) is fixed in the partition box (501), a sliding sleeve (517) is slidably mounted on the sliding bar (503), a rack (507) meshing with the gear (506) is fixed on one side of the sliding sleeve (517), a cross bar (502) is fixed on the top of the sliding sleeve (517), a support rod (514) is fixed on the cross bar (502), one end of the support rod (514) is fixed to the piston plate (518), and has a tendency to drive the piston plate (518) to move toward the second cavity (519) at all times; An air supply pipe (520) is fixed to one side of the partition box (501), and an air exhaust pipe (521) is fixed to the other end of the partition box (501); A telescopic rod (508) is arranged inside the partition box (501), a spring (509) is sleeved on the telescopic rod (508), one end of the telescopic rod (508) is fixedly connected to the inner wall of the partition box (501), and the other end is fixedly connected to the cross bar (502).

2. A die-casting machine for valve seat processing according to claim 1, characterized in that: The number of the notches (516) is multiple, and the multiple notches (516) are arranged at intervals along the length direction of the top plate (512). The number of the flat portions (513) and the U-shaped portions (510) are respectively multiple, and the multiple flat portions (513) and the U-shaped portions (510) are arranged alternately.

3. The die-casting machine for valve seat processing according to claim 1, characterized in that: The flat portion (513) is a sheet-like structure, the U-shaped portion (510) is a sheet-like structure, the top end of the U-shaped portion (510) is fixedly connected to a limiting plate (511), and the limiting plate (511) can abut against the top plate (512).

4. The die-casting machine for valve seat processing according to claim 1, characterized in that: The gear (506) is missing a plurality of clips on the outer side, there are two gears (506), an external motor for driving the gear (506) to rotate is fixed on the cooling box (505), an external fan is fixed on the cooling box (505), the output end of the external fan is connected to the air supply pipe (520), and the other end of the exhaust pipe (521) is located outside the cooling box (505).

5. The die-casting machine for valve seat processing according to claim 1, characterized in that: A water chiller (504) for cooling the cooling liquid in the cooling box (505) is fixed at the lower end of the cooling box (505).

6. The die-casting machine for valve seat processing according to claim 1, characterized in that: The supply assembly (4) comprises a water pump (401), a first water pipe (402) and a second water pipe (403); the water pump (401) is fixedly mounted on a cooling box (505); a water inlet end of the water pump (401) is connected to the second water pipe (403); the second water pipe (403) is connected to the cooling box (505); a water outlet end of the water pump (401) is connected to the first water pipe (402); and one end of the first water pipe (402) is connected to a water inlet pipe (8).

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