A quenching device and method for casting aluminum alloy

Abstract

The present invention discloses a quenching device and method for cast aluminum alloy, and the present invention relates to the technical field of aluminum alloy heat treatment. By utilizing the reaction force generated by the quenching liquid sprayed from the water spray holes on multiple nozzle units relative to the air to propel the annular tube to rotate, the annular tube can continuously spray the quenching liquid onto the outer wall of the cast aluminum alloy shaft through the nozzle units at multiple positions while rotating around the outer wall of the cast aluminum alloy shaft, thereby achieving the purpose of rapidly 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 onto 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, thus saving the cost of setting nozzles.

Description

Technical Field

[0001] The present 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 is 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 using a straight optical axis and positioning holes 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 using a straight optical axis and positioning holes for positioning, the axial spacing between each nozzle can be reduced, thereby increasing the cooling speed of the steel pipe without increasing the water outlet pressure of the nozzle.

[0004] When the existing quenching device is quenching an aluminum alloy casting shaft, since the outer wall of the shaft or pipe is an arc-shaped structure, a large number of nozzles must be set in the form of a ring array to ensure that the sprayed water column fully covers the circumference of the shaft. Therefore, 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 later maintenance; secondly, the water column sprayed by each nozzle is shot out 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, the steel pipe quenching device disclosed in the patent application with reference to publication number CN207362291U, only arranges 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 later inspection and maintenance of the nozzles. In addition, when the water flow flushes and cools the steel pipe, the oxide layer formed on the outer wall of the pipe after being heated at high temperature and easily falls off is splashed around with the water flow, which can easily enter the nozzle and cause clogging.

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

[0006] In response to 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 a quenching operation on an aluminum alloy cast shaft, a large number of nozzles must be arranged in a circular array to ensure that the sprayed water column covers the shaft all around, because the outer wall of the shaft or pipe is an arc-shaped structure, and it is difficult to 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 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, making it impossible for the water column sprayed from a single nozzle to cover a larger cooling area, and the dust particles washed off by the water column can easily clog the nozzle, causing the nozzle to malfunction.

[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 set 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 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 anti-blocking operation after the quenching operation is completed;

[0009] The water storage chamber is provided 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 fixed 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 provided with a spray assembly for spraying 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 the adjacent position or the two No. 2 bearing rings at the adjacent positions jointly form a bearing frame for supporting the rotation of the spray assembly.

[0015] Furthermore, the spray assembly includes:

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

[0017] Multiple water inlets are evenly opened on the outer wall of the annular tube for introducing the quenching liquid inside the water storage cavity into the interior of the annular tube, and multiple mounting holes are also evenly opened on the inner wall of the annular tube;

[0018] Multiple 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 rotation of the annular tube.

[0019] Furthermore, the nozzle unit includes:

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

[0021] The 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 use 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 mounting grooves are evenly arranged on the outer wall of the nozzle, an avoidance groove is arranged on the inner wall of the mounting groove, and a plurality of dredging needles are evenly fixed on the inner wall of the mounting 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 includes:

[0026] A lifting plate is slidably arranged inside the nozzle, and 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 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 located between the lifting plate and the partition plate;

[0028] A plurality of extension arms are evenly rotated and 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-shaped tube that is rotated inside the installation groove by a rotating shaft, and a hose connected to its interior is fixedly arranged on the outer wall of the arc-shaped tube, and the end of the hose away from the arc-shaped tube is sealed and passes through the quenching tube and extends into its interior, and a plurality of water outlet holes are evenly opened on the side wall of the arc-shaped tube close to the nozzle.

[0030] The present invention also discloses a quenching method for a quenching device for casting aluminum alloys, which is used for a quenching device for casting aluminum alloys. 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 is gradually moved at a low speed from one end of the quenching tube assembly to the other end. The quenching liquid with a certain pressure accumulated in the water storage chamber 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. The discharged quenching liquid is filtered and cooled before being put into quenching work again.

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

[0035] 1. A quenching device and method for cast aluminum alloy, which, by setting a water quenching mechanism, uses the reaction force generated by the quenching liquid sprayed from the water holes on multiple nozzle units relative to the air to propel 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, it can continuously spray the quenching liquid onto the outer wall of the cast aluminum alloy shaft through the nozzle units at multiple positions, thereby achieving the purpose of rapidly 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, full coverage of the outer wall of the cast aluminum alloy shaft can be achieved without setting a large number of nozzles, which not only saves the cost of setting nozzles, but also reduces the workload of installing the nozzle units, and at the same time reduces the burden of inspection and maintenance of the nozzle units in the later stage.

[0036] 2. A quenching device and method for cast aluminum alloy, which provides an extension component, and utilizes the thrust of the quenching liquid to achieve the downward movement of the lifting plate, thereby being able 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 onto the outer wall of the cast aluminum alloy shaft, thereby achieving the effect of increasing the quenching liquid spraying range, and being able to cover the outer wall of the cast aluminum alloy shaft around with a small number of nozzle units.

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

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

[0039] Figure 2 This 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 This is a schematic diagram of the first overall structure of the water quenching mechanism of the present invention;

[0043] Figure 6 This is a second overall structural 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 This is a schematic structural diagram of the end pipe assembly of the present invention;

[0046] Figure 9 This is a schematic structural diagram of the connecting pipe assembly of the present invention;

[0047] Figure 10 This is a schematic structural diagram of the spray assembly of the present invention;

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

[0049] Figure 12 This is a schematic cross-sectional view of the structure of the nozzle unit of the present invention;

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

[0051] Figure 14 This is a schematic diagram of the cross-sectional structure of the nozzle of the present invention;

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

[0053] Figure: 1, quenching tube; 2, water quenching mechanism; 21, end pipe assembly; 211, annular pipe No. 1; 212, load ring No. 1; 213, drain hole No. 1; 22, tail pipe assembly; 23, connecting pipe assembly; 231, annular pipe No. 2; 232, load ring No. 2; 24, support frame; 25, spray assembly; 251, annular pipe; 252, water inlet; 253, mounting hole; 254, sprinkler unit; a1, nozzle; a2, water spray Hole; a3, partition; a4, installation groove; a5, avoidance groove; a6, unclogging 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 clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts 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 casting aluminum alloy, comprising a quenching tube assembly, which is set on the ground by a bracket, and further comprising:

[0057] 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 anti-blocking operation after the quenching operation is completed;

[0058] The water storage chamber 3 is provided 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 interior of the water quenching mechanism 2;

[0059] The detection assembly 4 is installed at the top of the quenching tube assembly. The bottom of the detection assembly 4 is equipped with a temperature sensor and a pressure sensor for detecting the temperature and pressure of the quenching liquid in the water storage chamber 3. The bottom ends of the temperature sensor and pressure sensor extend through the temperature sensor and pressure sensor quenching tube 1 and into the interior thereof.

[0060] The quenching tube assembly includes a quenching tube 1, with a casting inlet 5 and a casting outlet 6 at each end for the entry and exit of the cast aluminum alloy shaft. A plurality of guide wheels 7 are arranged in a circular array on the inner walls of the casting inlet 5 and the casting outlet 6 to guide the movement direction of the cast aluminum alloy shaft. A main water injection port 8 and a secondary water injection port 9 are fixedly provided at the top and bottom of the quenching tube 1, respectively, both for replenishing quenching liquid into the quenching tube 1. The main water injection port 8 is normally open and is connected to an external suction pump via a pipeline for conveying external quenching liquid into the water storage chamber 3. The secondary water injection port 9 is normally closed and is used to take over the conveying of quenching liquid to the water storage chamber 3 when the main water injection port 8 is unavailable.

[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 interior of the quenching tube 1, and a plurality of connecting pipe assemblies 23 are evenly arranged between the end pipe assembly 21 and the tail pipe assembly 22, and 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 provided 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 first annular tube 211, with a first support ring 212 fixedly mounted at one end. A first drain hole 213 for draining the quenching liquid is also defined on the outer wall of the first annular tube 211. The support frame 24 comprises an annular sleeve, which is removably mounted on the outer wall of the first annular tube 211, and a fixed bracket, which is bolted to the inner wall of the quenching tube 1. 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, tail pipe assembly 22, and spray assembly 25 are identical.

[0063] The connecting pipe assembly 23 includes a No. 2 annular pipe 231, and both ends of the No. 2 annular pipe 231 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 the adjacent position or the two No. 2 carrying rings 232 at the adjacent positions jointly form a carrying frame for supporting the rotation of the spray assembly 25.

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

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

[0066] Multiple water inlets 252 are evenly formed 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 multiple mounting holes 253 are evenly formed on the inner wall of the annular tube 251 ;

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

[0068] The spray head unit 254 includes:

[0069] Nozzle a1 is removably mounted within mounting hole 253 via bolts and is used to guide the flow of the quenching liquid. When installing nozzle a1, sealant tape should be wrapped around the outer wall of the portion of nozzle a1 that extends into mounting hole 253 to prevent the quenching liquid from leaking through the connection between nozzle a1 and mounting hole 253.

[0070] 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. The reaction force of the quenching liquid propels the nozzle a1 to move. A partition a3 is also fixedly installed inside the nozzle a1. After the multiple nozzles a1 are installed in the mounting hole 253, the quenching liquid sprayed from the water spray holes a2 in the multiple nozzles a1 propels the annular tube 251 to rotate in the same direction. Furthermore, according to design requirements, the thrust generated by the quenching liquid sprayed from the water spray holes a2 in the multiple nozzles a1 is greater than the friction between the annular tube 25 and the second and first load rings 232 and 212.

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

[0072] The spray range adjustment unit a7 is movably arranged inside the mounting groove a4 and is used to spray the 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] A lifting plate a8 is slidably mounted within the nozzle a1. Multiple through-holes a9 for the passage of quenching liquid are evenly distributed on the top of the lifting plate a8. A stopper is fixedly mounted on the inner wall of the nozzle a1 to limit the downward movement of the lifting plate a8. The stopper is located between the lifting plate a8 and the partition a3. When the lifting plate a8 moves downward to abut against the stopper, the angle formed between the spray range adjustment unit a7 and the outer wall of the nozzle a1 is 80 degrees.

[0076] The lifting column a10 is fixedly mounted on 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 a3.

[0077] Multiple extension arms a12 are uniformly and rotatably mounted on the outer wall of the lifting column a10, each used to drive the corresponding spray range adjustment unit a7 to expand or converge. One end of the extension arm a12 is rotatably mounted on the outer wall of the lifting column a10, and the other end of the extension arm a12 passes through a15 and is rotatably mounted on the outer wall of the arc tube a71. The spray hole a2 is always located between the partition a3 and the lifting plate a8, that is, the lower limit of the lifting plate a8's downward movement is above the spray hole a2. A sealed sliding connection structure is formed between the lifting column a10 and the partition a3; and a sealed sliding connection structure is formed between the lifting plate a8 and the inner wall of the nozzle a1.

[0078] The spray range adjustment unit a7 comprises an arc-shaped tube a71 pivotally mounted within the mounting slot a4. A flexible tube a72 is fixedly mounted on the outer wall of the arc-shaped tube a71, communicating with its interior. The end of the flexible tube a72, distal from the arc-shaped tube a71, seals through the quenching tube 1 and extends into its interior. Multiple water outlet holes a73 are evenly distributed on the sidewall of the arc-shaped tube a71, near the nozzle a1. The positions of the multiple dredging needles a6 correspond to the positions of the multiple 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 internal space of the mounting slot a4 is slightly larger than the outer dimensions of the arc-shaped tube a71, ensuring smooth deployment and retraction of the arc-shaped tube a71 from and into the mounting slot a4.

[0079] An embodiment of the present invention further provides a quenching method for a quenching device for casting aluminum alloys, which is used for a quenching device for casting aluminum alloys, 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 pipe, 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. After the quenching liquid passes through the filtering device to filter out impurities, it enters the cooling device for cooling and finally flows into the quenching liquid storage tank. The input end of the suction pump is connected to the quenching liquid storage tank through a pipe, 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. The controller is used to control the output power of the suction pump;

[0081] Step 2: The cast aluminum alloy shaft, after being heated, gradually moves at a low speed through one end of the quenching tube assembly toward the other end. The quenching liquid, which has a certain pressure and is 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, rapidly reducing the temperature of the cast aluminum alloy. The specific process is as follows: the cast aluminum alloy shaft, after being heated at high temperature, enters the quenching tube 1 through one end of the casting inlet 5. The bottom of the cast aluminum alloy shaft is supported by multiple guide wheels 7 and smoothly enters the quenching tube 1.

[0082] The suction pump continuously draws the quenching liquid through the main water inlet 8 into the water storage chamber 3, thereby storing a large amount of quenching liquid 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 units 254 at corresponding positions through the mounting holes 253 at multiple positions. The high-speed flowing quenching liquid first enters the upper part of the lifting plate a8. At the same time, 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 is pushed down along the inner wall of the nozzle a1 by the thrust of the quenching liquid. The spring a11 is compressed and elastically deformed. The lifting column a10 is able to push the extension arms a12 at multiple positions to rotate and expand while the lifting plate a8 moves downward synchronously. The multiple extension arms a12 push the spray range adjustment units a7 at corresponding positions to rotate and expand along the mounting groove a4 until the bottom of the lifting plate a8 and the limit block are abutted. At this time, the expansion angle formed between the spray range adjustment unit a7 and the nozzle a1 is 80 degrees.

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

[0085] When the quenching liquid is stopped, 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 multiple 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, multiple 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. The discharged quenching liquid is filtered and cooled before being put into quenching work again.

[0088] It should be noted that, in this document, relational terms such as first and second, etc., are used only 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 "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0089] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 by a bracket, characterized in that: Also includes: A 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 provided between the quenching tube assembly and the water quenching mechanism (2), and is used for storing quenching liquid and transporting the quenching liquid to the interior of the water quenching mechanism (2); A 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 thereof for detecting the temperature and pressure of the quenching liquid inside the water storage chamber (3); The quenching tube assembly includes a quenching tube (1), and the water quenching mechanism (2) includes an end tube assembly (21) and a tail tube assembly (22) arranged on both sides of the interior of the quenching tube (1), a plurality of connecting tube assemblies (23) are evenly arranged between the end tube assembly (21) and the tail tube assembly (22), 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 tube assembly (21), the tail tube assembly (22) and adjacent connecting tube assemblies (23), and between two adjacent connecting tube assemblies (23); 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 outer wall of the No. 1 annular pipe (211) is provided with a No. 1 drain hole (213) for draining quenching liquid; The connecting pipe assembly (23) includes a No. 2 annular pipe (231), and both ends of the No. 2 annular pipe (231) are fixedly provided with a No. 2 bearing ring (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) to rotate; The spray assembly (25) comprises: An annular tube (251) is rotatably mounted on a carrier frame consisting of 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 provided 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 provided on the inner wall of the annular tube (251); A plurality of nozzle units (254) are detachably mounted 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; The nozzle unit (254) includes: A nozzle (a1) is detachably mounted inside the mounting hole (253) via 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) for spraying out a portion of the quenching liquid and utilizing the reaction force of the quenching liquid to push the nozzle (a1) to move. A partition (a3) is also fixedly provided inside the nozzle (a1); A plurality of mounting 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 mounting groove (a4); and a plurality of dredging needles (a6) are evenly and fixedly arranged on the inner wall of the mounting 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; An extension assembly is provided inside the nozzle (a1) and is used to control the spray range adjustment units (a7) at multiple positions to simultaneously expand or converge; The extension assembly comprises: A lifting plate (a8) is slidably arranged inside the nozzle (a1), and a plurality of through holes (a9) for the passage of quenching liquid are evenly opened on the top of the lifting plate (a8), and a limit block for limiting the downward movement 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 (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.

2. A quenching device for cast aluminum alloy according to claim 1, characterized in that: The quenching tube (1) is provided with a casting inlet (5) and a casting outlet (6) for the entry and exit of the cast aluminum alloy shaft at both ends, and a plurality of guide wheels (7) are provided 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. The top and bottom of the quenching tube (1) are respectively fixedly provided with a main water injection port (8) and an auxiliary water injection port (9), 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 end pipe assembly (21), tail pipe assembly (22) and connecting pipe assembly (23) are all mounted on the inner wall of the quenching tube (1) via a support frame (24).

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

5. A quenching method for a quenching device for a cast aluminum alloy, characterized in that: A quenching device for a cast aluminum alloy according to any one of claims 1 to 4, 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 heat 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), and 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. The discharged quenching liquid is filtered and cooled before being put into quenching work again.

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