Quenching device and method for cast aluminum alloy

Abstract

The invention discloses a quenching device and method for cast aluminum alloy, and relates to the technical field of aluminum alloy heat treatment. The counter-acting force generated by quenching liquid sprayed out of the water spraying holes in the multiple spraying head units relative to air is used for pushing the spraying head units to move, and therefore the purpose of pushing the annular pipe to rotate is achieved. Quenching liquid can be continuously sprayed to the outer wall of the cast aluminum alloy shaft through the spray head units at the multiple positions, and the purpose of rapidly cooling the cast aluminum alloy shaft is achieved; secondly, due to the fact that the positions of the multiple spray head units are continuously changed in the rotating process, each spray head unit can spray the quenching liquid around different positions of the outer wall of the cast aluminum alloy shaft, and therefore the effect that the quenching liquid is evenly sprayed to the outer wall of the cast aluminum alloy shaft is achieved; furthermore, the outer wall of the cast aluminum alloy shaft can be fully covered by a circle by arranging a small number of spray head units, a large number of spray heads do not need to be arranged, and the cost for arranging the spray heads is saved.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy heat treatment, in particular to a quenching device and a method for casting aluminum alloy. Background Art

[0002] At present, in the subsequent processing of aluminum alloy shafts produced by casting technology, quenching process is a key link in order to give them the necessary physical and chemical properties. This process requires that the aluminum alloy shafts be heated to a high temperature state first, and then the temperature of the shafts be quickly reduced to a low temperature level by water spray cooling.

[0003] With reference to the steel pipe quenching device disclosed in the patent application with publication number CN207362291U, the nozzle and the inner cylinder of the main cooling device of the steel pipe quenching device are positioned by a straight optical axis and a positioning hole instead of a screw positioning method, which can effectively improve the positioning accuracy of each nozzle, ensure that the water outlet lines of each nozzle converge at the axis of the steel pipe, ensure uniform radial cooling of the steel pipe, and improve product quality; and, by positioning by a straight optical axis and a positioning hole, the axial spacing between each nozzle can be reduced, so that the cooling speed of the steel pipe is increased without increasing the water outlet pressure of the nozzle.

[0004] When the existing quenching device performs quenching operation on aluminum alloy casting shafts, since the outer wall of the shaft or pipe is an arc-shaped structure, a large number of nozzles must be arranged in the form of a circular array to ensure that the sprayed water column fully covers the circumference of the shaft, so that each quenching device needs to be installed with a large number of nozzles, and it is impossible to make the sprayed quenching liquid cover the outer wall of the shaft all around by setting a smaller number of nozzles. Setting a large number of nozzles not only increases the cost of installing the nozzles, but also increases the difficulty of subsequent maintenance; secondly, the water column sprayed by each nozzle is ejected in a straight line, so that the area where the water column acts on the surface of the shaft is narrow, resulting in that the water column sprayed by a single nozzle is difficult to cover a larger cooling area, and is The dust particles dropped by the water column can easily cause clogging of the nozzle, causing the nozzle to malfunction. For example, refer to the steel pipe quenching device disclosed in the patent application with publication number CN207362291U. This device only sets a large number of nozzles on the inner wall of the inner cylinder, and uses the water columns sprayed from multiple nozzles to cover the outer wall of the passing pipe. This method requires the installation of a large number of nozzles, which not only increases the workload when installing the nozzles, but also adds a burden to the subsequent inspection and maintenance of the nozzles. In addition, when the water flow flushes and cools the steel pipe, the oxide layer that is easily removed and formed on the outer wall of the pipe after being heated at high temperature is splashed around with the water flow, which can easily enter the nozzle and cause clogging.

[0005] Therefore, the present invention proposes a quenching device and method for cast aluminum alloy to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a quenching device and method for cast aluminum alloys, which solve the problem that when the prior quenching device performs quenching operation on aluminum alloy cast shafts, due to the arc-shaped outer wall of the shaft or pipe, a large number of nozzles must be arranged in the form of a ring array to ensure that the sprayed water column covers the shaft all around, and it is difficult to cover the outer wall of the shaft all around by setting a small number of nozzles. Setting a large number of nozzles not only increases the workload of installing the nozzles and the difficulty of subsequent maintenance, but also increases the cost of adding nozzles; and the quenching liquid sprayed from each nozzle is in the shape of a column, and the area where the water column acts on the surface of the shaft is narrow, so that the water column sprayed from a single nozzle cannot cover a larger cooling area, and dust particles washed off by the water column can easily clog the nozzle, resulting in the nozzle being unable to work normally.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A quenching device for cast aluminum alloy, comprising a quenching tube assembly, which is arranged on the ground through a bracket, and further comprising:

[0008] The water quenching mechanism is arranged inside the quenching tube assembly, and is used to continuously spray the quenching liquid around the outer wall of the cast aluminum alloy shaft, and automatically increase the coverage area of ​​the quenching liquid on the surface of the cast aluminum alloy shaft, complete the operation of reducing the temperature of the cast aluminum alloy shaft in a short time, and automatically perform the anti-blocking operation after the quenching operation is completed;

[0009] The water storage chamber is arranged between the quenching tube assembly and the water quenching mechanism, and is used to store the quenching liquid and transport the quenching liquid to the interior of the water quenching mechanism;

[0010] The detection component is arranged on the top of the quenching tube component, and a temperature sensor and a pressure sensor are arranged on the bottom of the detection component for detecting the temperature and pressure of the quenching liquid inside the water storage cavity.

[0011] Furthermore, the quenching tube assembly includes a quenching tube, and both ends of the quenching tube are respectively provided with a casting inlet and a casting outlet for entering and outputting the cast aluminum alloy shaft. A plurality of guide wheels are arranged in a circular array on the inner walls of the casting inlet and the casting outlet for guiding the moving direction of the cast aluminum alloy shaft. The top and bottom of the quenching tube are respectively fixedly provided with a main water injection port and an auxiliary water injection port, both of which are used to replenish quenching liquid into the quenching tube.

[0012] Furthermore, the water quenching mechanism includes an end pipe assembly and a tail pipe assembly arranged on both sides of the quenching tube, and a plurality of connecting pipe assemblies are evenly arranged between the end pipe assembly and the tail pipe assembly. The end pipe assembly, the tail pipe assembly and the connecting pipe assembly are all installed on the inner wall of the quenching tube through a support frame. The end pipe assembly, the tail pipe assembly and the connecting pipe assembly are respectively and rotatably arranged between adjacent connecting pipe assemblies and between two adjacent connecting pipe assemblies to spray quenching liquid onto the outer wall of the cast aluminum alloy shaft.

[0013] Furthermore, the end pipe assembly includes a No. 1 annular pipe, one end of which is fixedly provided with a No. 1 bearing ring, and an outer wall of the No. 1 annular pipe is also provided with a No. 1 drainage hole for discharging quenching liquid.

[0014] Furthermore, the connecting pipe assembly includes a No. 2 annular pipe, both ends of which are fixedly provided with a No. 2 bearing ring used in conjunction with the No. 1 bearing ring. The No. 2 bearing ring and the No. 1 bearing ring at an adjacent position or the two No. 2 bearing rings at adjacent positions jointly form a bearing frame for supporting the spray assembly to rotate.

[0015] Furthermore, the spray assembly comprises:

[0016] An annular tube is rotatably arranged on a carrier frame consisting of a No. 2 carrier ring and a No. 1 carrier ring at an adjacent position or two No. 2 carrier rings at adjacent positions, and is used to spray quenching liquid while rotating around the cast aluminum alloy shaft;

[0017] A plurality of water inlets are evenly provided on the outer wall of the annular tube for introducing the quenching liquid in the water storage cavity into the interior of the annular tube, and a plurality of mounting holes are evenly provided on the inner wall of the annular tube;

[0018] A plurality of nozzle units are detachably arranged in the mounting holes at corresponding positions, so as to increase the coverage area of ​​the quenching liquid and provide power for driving the annular tube to rotate at the same time.

[0019] Furthermore, the nozzle unit comprises:

[0020] A nozzle, detachably arranged inside the mounting hole by means of bolts, for guiding the flow of the quenching liquid;

[0021] A water spray hole is provided on one side of the outer wall of the nozzle, and is used to spray out part of the quenching liquid, and utilize the reaction force of the quenching liquid to push the nozzle to move. A partition is also fixedly provided inside the nozzle;

[0022] A plurality of installation grooves are evenly arranged on the outer wall of the nozzle, an avoidance groove is arranged on the inner wall of the installation groove, and a plurality of dredging needles are evenly and fixedly arranged on the inner wall of the installation groove;

[0023] A spray range adjustment unit, movably arranged inside the mounting slot, is used to spray quenching liquid onto the cast aluminum alloy shaft;

[0024] The extension component is arranged inside the nozzle and is used to control the spray range adjustment units at multiple positions to expand or gather at the same time.

[0025] Furthermore, the stretching assembly comprises:

[0026] A lifting plate is slidably arranged inside the nozzle, a plurality of through holes for the quenching liquid to pass through are evenly opened on the top of the lifting plate, and a limit block for limiting the downward movement limit position of the lifting plate is fixedly arranged on the inner wall of the nozzle;

[0027] A lifting column is fixedly arranged at the bottom of the lifting plate, and a spring is provided on the outer wall of the lifting column and is slidably sleeved between the lifting plate and the partition plate;

[0028] A plurality of extension arms are evenly rotatably arranged on the outer wall of the lifting column and are respectively used to drive the spray range adjustment units at corresponding positions to expand or gather.

[0029] Furthermore, the spray range adjustment unit includes an arc tube that is rotatably arranged inside the installation groove by a rotating shaft, a hose that is fixedly arranged on the outer wall of the arc tube and is connected to the interior of the arc tube, and one end of the hose away from the arc tube is sealed and passes through the quenching tube and extends into the interior thereof, and a plurality of water outlet holes are evenly opened on the side wall of the arc tube close to the nozzle.

[0030] The present invention also discloses a quenching method for a quenching device for casting aluminum alloy, which is used for a quenching device for casting aluminum alloy, and the method comprises the following steps:

[0031] Step 1: First, install the quenching tube assembly on the ground ignition work surface, and then connect the external quenching liquid supply equipment and the quenching tube assembly;

[0032] Step 2: The cast aluminum alloy shaft after the heat treatment moves gradually from one end of the quenching tube assembly to the other end at a low speed, and the quenching liquid with a certain pressure accumulated in the water storage cavity is sprayed around the outer wall of the cast aluminum alloy shaft through the water quenching mechanism, and the temperature of the cast aluminum alloy is rapidly reduced;

[0033] Step 3: The used quenching liquid flows out through the two ends of the quenching tube assembly, and the discharged quenching liquid is filtered and cooled before being put into the quenching work again.

[0034] The present invention provides a quenching device and method for casting aluminum alloy. Compared with the prior art, the quenching device and method have the following advantages:

[0035] 1. A quenching device and method for cast aluminum alloy, by setting a water quenching mechanism, which uses the reaction force generated by the quenching liquid sprayed from the water spray holes on multiple nozzle units relative to the air to drive itself to move, thereby achieving the purpose of driving the annular tube to rotate. Therefore, while the annular tube rotates around the outer wall of the cast aluminum alloy shaft, the nozzle units at multiple positions can continuously spray the quenching liquid to the outer wall of the cast aluminum alloy shaft, thereby achieving the purpose of quickly cooling the cast aluminum alloy shaft; secondly, since the multiple nozzle units continuously change their positions during the rotation process, each nozzle unit can spray the quenching liquid around different positions of the outer wall of the cast aluminum alloy shaft, thereby achieving the effect of uniformly spraying the quenching liquid on the outer wall of the cast aluminum alloy shaft, and then by setting a small number of nozzle units, the outer wall of the cast aluminum alloy shaft can be fully covered around a circle, without setting a large number of nozzles, which not only saves the cost of setting the nozzles, but also can reduce the workload of installing the nozzle units, and at the same time can reduce the overhaul and maintenance burden of the nozzle units in the later stage.

[0036] 2. A quenching device and method for cast aluminum alloy, which sets an extension component and utilizes the thrust of quenching liquid to realize the downward movement of the lifting plate, so as to simultaneously push the extension arms at multiple positions to expand. Therefore, the spray range adjustment units at multiple positions can be expanded in an umbrella shape under the push of the extension arms at corresponding positions, so that the multiple spray range adjustment units together form a larger quenching liquid spraying surface, so that the quenching liquid can present a larger spray surface to spray the quenching liquid on the outer wall of the cast aluminum alloy shaft, thereby achieving the effect of increasing the spraying range of the quenching liquid, and can cover the outer wall of the cast aluminum alloy shaft around a small number of nozzle units.

[0037] 3. A quenching device and method for cast aluminum alloy, by setting a spray range adjustment unit and a clearing needle, when the arc tube is stored in the installation groove from the expanded state, the clearing needles at multiple positions can be inserted into the water outlet holes at the corresponding positions, so that the dust and impurities attached to the inner wall of the water outlet hole during operation can be cleared, and after the arc plate is completely stored in the installation groove, the clearing needle can be completely inserted into the water outlet hole. Therefore, the channel of the water outlet hole is completely blocked by the clearing needle, which can prevent dust or other impurities from entering the water outlet hole, thereby ensuring that the water outlet hole is always in a smooth state. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the second overall three-dimensional structure of the present invention;

[0040] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0041] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of part A;

[0042] Figure 5 It is a schematic diagram of the first overall structure of the water quenching mechanism of the present invention;

[0043] Figure 6 It is a second overall structural schematic diagram of the water quenching mechanism of the present invention;

[0044] Figure 7 This is a schematic diagram of the structure of the water quenching mechanism of the present invention in a decomposed state;

[0045] Figure 8 It is a schematic diagram of the structure of the end pipe assembly of the present invention;

[0046] Fig. 9 This is a schematic diagram of the structure of the connecting pipe assembly of the present invention;

[0047] Fig.10 It is a schematic diagram of the structure of the spray assembly of the present invention;

[0048] Fig.11 This is a schematic diagram of the structure of the spray assembly of the present invention in an exploded state;

[0049] Fig.12 It is a schematic diagram of the cross-sectional structure of the nozzle unit of the present invention;

[0050] Fig.13 For the present invention Fig.12 A schematic diagram of the enlarged structure of part B in FIG.

[0051] Fig.14 It is a schematic diagram of the cross-sectional structure of the nozzle of the present invention;

[0052] Fig.15 It is a schematic diagram of the structure of the spray range adjustment component of the present invention.

[0053] In the figure: 1, quenching tube; 2, water quenching mechanism; 21, end pipe assembly; 211, No. 1 annular pipe; 212, No. 1 bearing ring; 213, No. 1 drainage hole; 22, tail pipe assembly; 23, connecting pipe assembly; 231, No. 2 annular pipe; 232, No. 2 bearing ring; 24, support frame; 25, spray assembly; 251, annular pipe; 252, water inlet; 253, mounting hole; 254, nozzle unit; a1, nozzle; a2, water spray hole; a3, partition; a4, installation groove; a5, avoidance groove; a6, dredging needle; a7, spray range adjustment unit; a71, arc tube; a72, hose; a73, water outlet; a8, lifting plate; a9, through hole; a10, lifting column; a11, spring; a12, extension arm; 3, water storage chamber; 4, detection component; 5, casting inlet; 6, casting outlet; 7, guide wheel; 8, main water inlet; 9, auxiliary water inlet. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] The present invention provides three technical solutions: a quenching device for cast aluminum alloy, specifically including the following embodiments:

[0056] like Figure 1-Figure 3 A first embodiment is shown: a quenching device for a cast aluminum alloy, comprising a quenching tube assembly, which is arranged on the ground through a bracket, and further comprising:

[0057] The water quenching mechanism 2 is arranged inside the quenching tube assembly, and is used to continuously spray the quenching liquid around the outer wall of the cast aluminum alloy shaft, and automatically increase the coverage area of ​​the quenching liquid on the surface of the cast aluminum alloy shaft, complete the operation of reducing the temperature of the cast aluminum alloy shaft in a short time, and automatically perform the anti-blocking operation after the quenching operation is completed;

[0058] The water storage chamber 3 is arranged between the quenching tube assembly and the water quenching mechanism 2, and is used to store the quenching liquid and transport the quenching liquid to the inside of the water quenching mechanism 2;

[0059] The detection assembly 4 is arranged at the top of the quenching tube assembly, and a temperature sensor and a pressure sensor are arranged at the bottom thereof, which are used to detect the temperature and pressure of the quenching liquid in the water storage chamber 3. The bottom ends of the temperature sensor and the pressure sensor both penetrate the temperature sensor and the pressure sensor quenching tube 1 and extend into the interior thereof;

[0060] The quenching tube assembly includes a quenching tube 1, and the two ends of the quenching tube 1 are respectively provided with a casting inlet 5 and a casting outlet 6 for the casting aluminum alloy shaft to enter and exit. The inner walls of the casting inlet 5 and the casting outlet 6 are provided with a plurality of guide wheels 7 in a circular array for guiding the moving direction of the cast aluminum alloy shaft. The top and bottom of the quenching tube 1 are respectively fixed with a main water injection port 8 and an auxiliary water injection port 9, both of which are used to add quenching liquid to the quenching tube 1. The main water injection port 8 is in a normally open state, and is connected to an external suction pump through a pipeline, and is used to transport the external quenching liquid into the water storage chamber 3, while the auxiliary water injection port 9 is in a normally closed state, and is used to take over the transportation of quenching liquid to the water storage chamber 3 when the main water injection port 8 cannot be used;

[0061] like Figure 4-Figure 9A second embodiment is shown, which differs from the first embodiment in that: a quenching device for cast aluminum alloy, a water quenching mechanism 2 includes an end pipe assembly 21 and a tail pipe assembly 22 arranged on both sides of the inside of a quenching tube 1, a plurality of connecting pipe assemblies 23 are evenly arranged between the end pipe assembly 21 and the tail pipe assembly 22, the end pipe assembly 21, the tail pipe assembly 22 and the connecting pipe assembly 23 are all installed on the inner wall of the quenching tube 1 through a support frame 24, and a spray assembly 25 for spraying quenching liquid onto the outer wall of the cast aluminum alloy shaft is rotatably arranged between the end pipe assembly 21, the tail pipe assembly 22 and the adjacent connecting pipe assemblies 23 and between two adjacent connecting pipe assemblies 23.

[0062] The end pipe assembly 21 includes a No. 1 annular pipe 211, a No. 1 bearing ring 212 is fixedly provided at one end of the No. 1 annular pipe 211, and a No. 1 drainage hole 213 for discharging the quenching liquid is also provided on the outer wall of the No. 1 annular pipe 211. The support frame 24 is composed of an annular sleeve and a fixed bracket, the annular sleeve is detachably sleeved on the outer wall of the No. 1 annular pipe 211, and the fixed bracket is fixedly connected to the inner wall of the quenching pipe 1 by bolts; the end pipe assembly 21 and the tail pipe assembly 22 have the same structure, and the outer diameters of the end pipe assembly 21, the tail pipe assembly 22 and the spray assembly 25 are the same;

[0063] The connecting pipe assembly 23 includes a No. 2 annular pipe 231, both ends of which are fixedly provided with a No. 2 carrying ring 232 used in conjunction with the No. 1 carrying ring 212. The No. 2 carrying ring 232 and the No. 1 carrying ring 212 at an adjacent position or the two No. 2 carrying rings 232 at adjacent positions jointly form a carrying frame for supporting the spray assembly 25 for rotation.

[0064] like Figure 10-15 A third embodiment is shown, which differs from the second embodiment in that: a quenching device for a cast aluminum alloy, the spray assembly 25 comprises:

[0065] The annular tube 251 is rotatably disposed on a carrier frame consisting of the No. 2 carrier ring 232 and the No. 1 carrier ring 212 at an adjacent position or two No. 2 carrier rings 232 at adjacent positions, and is used to spray quenching liquid while rotating around the cast aluminum alloy shaft;

[0066] A plurality of water inlets 252 are evenly provided on the outer wall of the annular tube 251 for introducing the quenching liquid in the water storage chamber 3 into the annular tube 251, and a plurality of mounting holes 253 are evenly provided on the inner wall of the annular tube 251;

[0067] A plurality of nozzle units 254 are detachably disposed in the mounting holes 253 at corresponding positions, respectively, to increase the coverage area of ​​the quenching liquid and to provide power for driving the annular tube 251 to rotate.

[0068] The spray head unit 254 includes:

[0069] The nozzle a1 is detachably mounted inside the mounting hole 253 by bolts, and is used to guide the flow of the quenching liquid. When the nozzle a1 is installed, a sealing tape needs to be wrapped around the outer wall of the portion extending into the mounting hole 253 to prevent the quenching liquid from leaking out through the connection between the nozzle a1 and the mounting hole 253.

[0070] The water spray hole a2 is provided on one side of the outer wall of the nozzle a1, and is used to spray out part of the quenching liquid, and utilize the reaction force of the quenching liquid to push the nozzle a1 to move. A partition a3 is also fixedly arranged inside the nozzle a1. After multiple nozzles a1 are installed in the mounting hole 253, the quenching liquid sprayed out from the water spray holes a2 in the multiple nozzles a1 pushes the annular tube 251 to rotate in the same direction. According to design requirements, the thrust jointly generated by the quenching liquid sprayed out from the water spray holes a2 in the multiple nozzles a1 is greater than the friction between the annular tube 25 and the No. 2 load ring 232 and the No. 1 load ring 212.

[0071] A plurality of installation grooves a4 are evenly arranged on the outer wall of the nozzle a1, an avoidance groove a5 is arranged on the inner wall of the installation groove a4, and a plurality of dredging needles a6 are evenly and fixedly arranged on the inner wall of the installation groove a4;

[0072] A spray range adjustment unit a7, movably arranged inside the mounting groove a4, for spraying quenching liquid onto the cast aluminum alloy shaft;

[0073] The extension assembly is arranged inside the nozzle a1 and is used to control the spray range adjustment units a7 at multiple positions to expand or gather at the same time.

[0074] The extension kit includes:

[0075] The lifting plate a8 is slidably arranged inside the nozzle a1. A plurality of through holes a9 for the quenching liquid to pass through are evenly opened on the top of the lifting plate a8. A limit block for limiting the downward movement of the lifting plate a8 is fixedly arranged on the inner wall of the nozzle a1. The limit block is located between the lifting plate a8 and the partition a3. When the lifting plate a8 moves down to a position where it abuts against the limit block, the expansion angle formed between the spray range adjustment unit a7 and the outer wall of the nozzle a1 is eighty degrees.

[0076] A lifting column a10 is fixedly arranged at the bottom of the lifting plate a8, and a spring a11 is provided on the outer wall of the lifting column a10 and is located between the lifting plate a8 and the partition plate a3.

[0077] Multiple extension arms a12 are evenly rotatably arranged on the outer wall of the lifting column a10, and are respectively used to drive the spray range adjustment unit a7 at the corresponding position to expand or gather. One end of the extension arm a12 is rotatably arranged on the outer wall of the lifting column a10, and the other end of the extension arm a12 penetrates a15 and is rotatably arranged on the outer wall of the arc tube a71; the water spray hole a2 is always located between the partition a3 and the lifting plate a8, that is, the lower limit position of the lifting plate a8 that can move downward is located above the water spray hole a2; there is a sealed sliding connection structure between the lifting column a10 and the partition a3; and there is a sealed sliding connection structure between the lifting plate a8 and the inner wall of the nozzle a1;

[0078] The spray range adjustment unit a7 includes an arc tube a71 which is rotatably arranged inside the installation groove a4 through a rotating shaft, and a hose a72 which is connected to the inside of the arc tube a71 is fixedly arranged on the outer wall of the arc tube a71, and the end of the hose a72 which is away from the arc tube a71 is sealed and penetrates the quenching tube 1 and extends to the inside thereof, and a plurality of water outlet holes a73 are evenly opened on the side wall of the arc tube a71 close to the nozzle a1. The positions of the plurality of dredging needles a6 are respectively arranged in one-to-one correspondence with the positions of the plurality of water outlet holes a73, and the inner diameter of the water outlet holes a73 is larger than the outer diameter of the dredging needles a6; the size of the inner space of the installation groove a4 is slightly larger than the outer contour size of the arc tube a71, which can ensure that the arc tube a71 is smoothly unfolded from the installation groove a4 and smoothly stored in the installation groove a4.

[0079] The embodiment of the present invention further provides a quenching method for a quenching device for casting aluminum alloy, which is used for a quenching device for casting aluminum alloy, and the method comprises the following steps:

[0080] Step 1, first install the quenching tube assembly on the ground ignition work surface, and then connect the external quenching liquid supply equipment and the quenching tube assembly; the specific process is: the brackets fixedly installed on both sides of the bottom of the quenching tube 1 are locked on the ground or the operating table by bolts, and the external quenching liquid supply equipment is connected to the main water injection port 8 through a pipeline, and the inside of the auxiliary water injection port 9 is sealed; wherein, the quenching liquid supply equipment includes a suction pump, a quenching liquid storage tank, a filtering device, a cooling device and a controller, and the quenching liquid passes through the filtering device to filter out impurities and then enters the cooling device for cooling, and finally flows into the quenching liquid storage tank, and the input end of the suction pump is connected to the quenching liquid storage tank through a pipeline, which is used to suck out the quenching liquid in the quenching liquid storage tank, and transport it to the main water injection port 8 through the output end of the suction pump, and the controller is used to control the output power of the suction pump;

[0081] Step 2: The cast aluminum alloy shaft after the heat treatment gradually moves at a low speed from one end of the quenching tube assembly to the other end, and the quenching liquid with a certain pressure accumulated in the water storage chamber 3 is sprayed around the outer wall of the cast aluminum alloy shaft through the water quenching mechanism 2, and the temperature of the cast aluminum alloy is rapidly reduced; the specific process is: the cast aluminum alloy shaft after the high-temperature heat treatment enters the quenching tube 1 through one end of the casting inlet 5, and the bottom of the cast aluminum alloy shaft is lifted by a plurality of guide wheels 7 and smoothly enters the quenching tube 1;

[0082] The suction pump continuously sucks the quenching liquid into the water storage chamber 3 through the main water injection port 8, so a large amount of quenching liquid is stored in the water storage chamber 3. Since the water inlet 252 is connected to the water storage chamber 3, and since the quenching liquid cannot flow out through the water inlet 252 in a short time, a certain amount of quenching liquid with a certain pressure accumulates in the water storage chamber 3. The detection component 4 collects the pressure and temperature of the quenching liquid in the water storage chamber 3 in real time through the pressure sensor and the temperature sensor, and transmits the collected pressure and temperature signals to the controller in the quenching liquid supply device. The controller controls the output power of the suction pump according to the quenching liquid pressure in the water storage chamber 3, thereby controlling the quenching liquid pressure in the water storage chamber 3 to be within a certain range;

[0083] The quenching liquid enters the annular tube 251 through the water inlet 252, and enters the nozzle unit 254 at the corresponding position through the mounting holes 253 at multiple positions. The high-speed flowing quenching liquid first enters the top of the lifting plate a8, and the quenching liquid flows into the space between the partition a3 and the lifting plate a8 through the through hole a9. At the same time, the lifting plate a8 receives the thrust of the quenching liquid and moves down along the inner wall of the nozzle a1. The spring a11 is compressed and elastically deformed. The lifting column a10 moves down synchronously with the lifting plate a8 and can push the extension arms a12 at multiple positions to rotate and unfold. The multiple extension arms a12 push the spray range adjustment units a7 at the corresponding positions to rotate and unfold along the mounting groove a4 until the bottom of the lifting plate a8 and the limit block are against each other. At this time, the unfolding angle formed between the spray range adjustment unit a7 and the nozzle a1 is eighty degrees.

[0084] The quenching liquid accumulated between the partition a3 and the lifting plate a8 enters the arc tube a71 at the corresponding position through the hose a72, and sprays the quenching liquid onto the outer wall of the cast aluminum alloy shaft through multiple water outlet holes a73;

[0085] When the quenching liquid is stopped from being sprayed, the pressure inside the nozzle a1 decreases, and the elastic force of the spring a11 pushes the lifting plate a8 upward. The lifting column a10 moves upward and pulls the extension arms a12 at multiple positions together. The extension arms a12 pull the arc tubes a71 at the corresponding positions into the installation groove a4.

[0086] Since a plurality of dredging needles a6 corresponding to the positions of the water outlet holes a73 are evenly arranged in the installation groove a4, when the arc tube a71 enters the installation groove a4, a plurality of dredging needles a6 respectively enter the water outlet holes a73 at corresponding positions, and dust or impurities attached to the water outlet holes a73 are dredged. Moreover, since the water outlet holes a73 are blocked by the dredging needles a6, external dust and impurities cannot enter the water outlet holes a73.

[0087] Step 3: The used quenching liquid flows out through the two ends of the quenching tube assembly, and the discharged quenching liquid is filtered and cooled before being put into the quenching work again.

[0088] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0089] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quenching device for cast aluminum alloy, comprising a quenching tube assembly, which is arranged on the ground through a bracket, characterized in that: Also includes: The water quenching mechanism (2) is arranged inside the quenching tube assembly and is used to continuously spray quenching liquid around the outer wall of the cast aluminum alloy shaft and automatically increase the coverage area of ​​the quenching liquid on the surface of the cast aluminum alloy shaft to complete the operation of reducing the temperature of the cast aluminum alloy shaft in a short time and automatically perform an anti-blocking operation after the quenching operation is completed; A water storage chamber (3) is arranged between the quenching tube assembly and the water quenching mechanism (2), and is used to store quenching liquid and transport the quenching liquid to the interior of the water quenching mechanism (2); The detection assembly (4) is arranged on the top of the quenching tube assembly, and a temperature sensor and a pressure sensor are arranged on the bottom of the detection assembly to detect the temperature and pressure of the quenching liquid inside the water storage chamber (3).

2. A quenching device for cast aluminum alloy according to claim 1, characterized in that: The quenching tube assembly comprises a quenching tube (1), with a casting inlet (5) and a casting outlet (6) respectively provided at both ends of the quenching tube (1) for the cast aluminum alloy shaft to enter and exit, a plurality of guide wheels (7) being arranged in a circular array on the inner walls of the casting inlet (5) and the casting outlet (6) for guiding the moving direction of the cast aluminum alloy shaft, and a main water injection port (8) and a secondary water injection port (9) being respectively fixedly arranged at the top and the bottom of the quenching tube (1), both of which are used to replenish quenching liquid into the quenching tube (1).

3. A quenching device for cast aluminum alloy according to claim 2, characterized in that: The water quenching mechanism (2) comprises an end pipe assembly (21) and a tail pipe assembly (22) arranged on both sides of the interior of the quenching tube (1); a plurality of connecting pipe assemblies (23) are evenly arranged between the end pipe assembly (21) and the tail pipe assembly (22); the end pipe assembly (21), the tail pipe assembly (22) and the connecting pipe assembly (23) are all mounted on the inner wall of the quenching tube (1) via a support frame (24); and a spray assembly (25) for spraying quenching liquid onto the outer wall of the cast aluminum alloy shaft is rotatably arranged between the end pipe assembly (21), the tail pipe assembly (22) and adjacent connecting pipe assemblies (23), and between two adjacent connecting pipe assemblies (23).

4. A quenching device for cast aluminum alloy according to claim 3, characterized in that: The end pipe assembly (21) comprises a No. 1 annular pipe (211), one end of which is fixedly provided with a No. 1 bearing ring (212), and an No. 1 drainage hole (213) for discharging quenching liquid is also provided on the outer wall of the No. 1 annular pipe (211).

5. A quenching device for cast aluminum alloy according to claim 4, characterized in that: The connecting pipe assembly (23) comprises a No. 2 annular pipe (231), both ends of which are fixedly provided with No. 2 bearing rings (232) used in conjunction with the No. 1 bearing ring (212), and the No. 2 bearing ring (232) and the No. 1 bearing ring (212) at an adjacent position or the two No. 2 bearing rings (232) at adjacent positions jointly form a bearing frame for supporting the spray assembly (25) for rotation.

6. A quenching device for cast aluminum alloy according to claim 5, characterized in that: The spray assembly (25) comprises: An annular tube (251) is rotatably disposed on a carrier frame formed by a No. 2 carrier ring (232) and a No. 1 carrier ring (212) at an adjacent position or two No. 2 carrier rings (232) at adjacent positions, and is used to spray quenching liquid while rotating around the cast aluminum alloy shaft; A plurality of water inlets (252) are evenly arranged on the outer wall of the annular tube (251) for introducing the quenching liquid in the water storage chamber (3) into the interior of the annular tube (251), and a plurality of mounting holes (253) are evenly arranged on the inner wall of the annular tube (251); A plurality of spray head units (254) are detachably disposed in the mounting holes (253) at corresponding positions, and are used to increase the coverage area of ​​the quenching liquid and simultaneously provide power for driving the annular tube (251) to rotate.

7. A quenching device for cast aluminum alloy according to claim 6, characterized in that: The nozzle unit (254) comprises: A nozzle (a1) is detachably arranged inside the mounting hole (253) by means of bolts and is used to guide the flow of the quenching liquid; A water spray hole (a2) is provided on one side of the outer wall of the nozzle (a1) and is used to spray out a portion of the quenching liquid and use the reaction force of the quenching liquid to push the nozzle (a1) to move. A partition plate (a3) ​​is also fixedly arranged inside the nozzle (a1); A plurality of installation grooves (a4) are evenly arranged on the outer wall of the nozzle (a1); an avoidance groove (a5) is arranged on the inner wall of the installation groove (a4); and a plurality of dredging needles (a6) are evenly and fixedly arranged on the inner wall of the installation groove (a4); A spray range adjustment unit (a7), movably arranged inside the mounting groove (a4), for spraying quenching liquid onto the cast aluminum alloy shaft; The extension component is arranged inside the nozzle (a1) and is used to control the spray range adjustment units (a7) at multiple positions to expand or gather at the same time.

8. A quenching device for cast aluminum alloy according to claim 7, characterized in that: The extension assembly comprises: A lifting plate (a8) is slidably arranged inside the nozzle (a1), a plurality of through holes (a9) for the quenching liquid to pass through are evenly arranged on the top of the lifting plate (a8), and a limit block for limiting the downward movement limit position of the lifting plate (a8) is fixedly arranged on the inner wall of the nozzle (a1); A lifting column (a10) is fixedly arranged at the bottom of the lifting plate (a8), and a spring (a11) is provided on the outer wall of the lifting column (a10) and is located between the lifting plate (a8) and the partition plate (a3). A plurality of extension arms (a12) are evenly rotatably arranged on the outer wall of the lifting column (a10), and are respectively used to drive the spray range adjustment units (a7) at corresponding positions to expand or gather.

9. A quenching device for cast aluminum alloy according to claim 7, characterized in that: The spray range adjustment unit (a7) comprises an arc tube (a71) which is rotatably arranged inside the mounting groove (a4) via a rotating shaft, a hose (a72) which is fixedly arranged on the outer wall of the arc tube (a71) and is connected to the interior thereof, and an end of the hose (a72) which is away from the arc tube (a71) is sealed and passes through the quenching tube (1) and extends into the interior thereof, and a plurality of water outlet holes (a73) are evenly arranged on the side wall of the arc tube (a71) close to the spray pipe (a1).

10. A quenching method for a quenching device for a cast aluminum alloy, characterized in that: A quenching device for a cast aluminum alloy as claimed in any one of claims 1 to 9, the method comprising the following steps: Step 1: First, install the quenching tube assembly on the ground ignition work surface, and then connect the external quenching liquid supply equipment and the quenching tube assembly; Step 2: the cast aluminum alloy shaft after the heating treatment is gradually moved at a low speed through one end of the quenching tube assembly toward the other end, and the quenching liquid with a certain pressure accumulated in the water storage chamber (3) is sprayed around the outer wall of the cast aluminum alloy shaft through the water quenching mechanism (2), so that the temperature of the cast aluminum alloy is rapidly reduced; Step 3: The used quenching liquid flows out through the two ends of the quenching tube assembly, and the discharged quenching liquid is filtered and cooled before being put into the quenching work again.

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