Quenching tank device with uniform flowing in three-dimensional space

Abstract

The invention relates to a quenching tank device with uniform flowing in a three-dimensional space, belongs to the technical field of quenching equipment, and aims to solve the problems of poor quenching quality of workpieces and low quenching finished products of the workpieces caused by non-uniform stirring of quenching media during quenching of existing quenching equipment. The device comprises a quenching shell, a stirring assembly and a flow guide assembly, wherein a quenching tank in the quenching shell is provided with a material table; the flow guide assembly comprises an anti-diffusion plate and a flow guide pipe; the anti-diffusion plate is of a hollow structure with openings in the two sides and arranged on the outer side of the material table in a sleeving mode. The flow guide pipe is vertically mounted on the outer side of the anti-diffusion plate, a pipe body on one side of the flow guide pipe extends to an opening in one side of the anti-diffusion plate, and a stirring assembly is mounted in a pipe body on the other side of the flow guide pipe; the stirring assembly comprises a stirring motor and stirring blades; the stirring motor is fixedly installed on the quenching shell, and the power end of the stirring motor extends into the flow guide pipe and is fixedly connected with the stirring blades. According to the invention, the uniformity and stability of overall flowing of fluid in a three-dimensional space can be improved, and the product quality can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of quenching equipment, and in particular to a quenching tank device with uniform flow in a three-dimensional space. Background Art

[0002] At present, in the quenching production process, conventional quenching oil tanks, quenching water tanks, and quenching salt tanks generally use side stirring to drive the stirring medium to be forcibly squeezed to the bottom of the quenching workpiece, and then form several areas of upward surging fluid through strip guide plates to achieve stirring, heat exchange and flow effects. This method has the disadvantage that the direction, flow rate and uniformity of fluid movement cannot be controlled, resulting in uneven hardness of the quenched workpiece and unstable heat treatment quality. Therefore, a quenching tank device with uniform flow in a three-dimensional space is needed to solve the problem of uneven stirring of the quenching medium during quenching in existing quenching equipment, resulting in poor quenching quality of the workpiece and low quenching quality of the workpiece. Summary of the Invention

[0003] The object of the present invention is to provide a quenching tank device with uniform flow in a three-dimensional space to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a quenching tank device with uniform flow in a three-dimensional space, comprising a quenching shell, a stirring assembly and a guide assembly, the quenching shell radially comprising an upper shell and a lower shell, both of which are hollow cavity structures, and a quenching medium is provided inside the lower shell to form a quenching tank; the quenching tank in the quenching shell is provided with a material table; the guide assembly comprises an anti-diffusion plate and a guide pipe; the anti-diffusion plate is open on both sides, has an internal hollow structure, and is sleeved on the outside of the material table; the guide pipe comprises a main guide pipe and an auxiliary guide pipe; the main guide pipe is a cavity structure with an open side and a hollow interior, and is fixedly installed at the bottom of the lower shell, and the material table is installed on the open side of the main guide pipe; the auxiliary guide pipe is vertically installed on the outside of the anti-diffusion plate and fixedly installed on the main guide pipe, and the auxiliary guide pipe is connected to the main guide pipe; the stirring assembly comprises a stirring motor and a stirring blade; the stirring motor is fixedly installed on the quenching shell, and its power end extends into the auxiliary guide pipe and is fixedly connected to the stirring blade.

[0005] Preferably, the upper shell is equipped with a lifting assembly, which includes a lifting motor, a driving rod and a driving wheel; the driving rod is rotatably mounted on the upper shell, the lifting motor is fixedly mounted on the upper shell, and its power end is connected to the driving rod; a driving wheel is fixedly mounted on the driving rod, the driving wheel is rotatably sleeved on the conveyor belt, and the conveyor belt is connected to the material table.

[0006] Preferably, there are several auxiliary flow guide tubes, and the several auxiliary flow guide tubes are divided into at least three groups along the circumference of the material table, and each group includes at least two auxiliary flow guide tubes.

[0007] Preferably, the opening shape of the opening side of the main duct is adapted to the shape of the material platform, and the opening size of the main duct is adapted to the size of the material platform.

[0008] Preferably, a guide plate is installed at the opening of the main guide pipe; and diversion holes are evenly spaced on the guide plate.

[0009] Preferably, the radial height of the anti-diffusion plate is at least greater than the height of the workpiece, and the height of the secondary guide pipe away from the main guide pipe is at least greater than the radial height of the guide plate.

[0010] Preferably, the opening ratio of the guide plate and the radial height dimension of the anti-diffusion plate are adapted to the flow rate of the stirring medium. The stirring medium is driven by the stirring blades and enters the anti-diffusion plate from the guide plate on the opening side of the main guide pipe to quench the workpiece until it flows out from the opening on the side of the anti-diffusion plate away from the main guide pipe, and is then driven by the stirring blades to be sucked into the secondary guide pipe to form a circulating stirring zone, and the stirring area of ​​the stirring zone at least covers the outer surface of the workpiece.

[0011] Preferably, the stirring assembly also includes a control assembly, the control assembly includes a controller and a sensor, the sensor includes a flow velocity sensor and a flow rate sensor, and the plate body of at least the bottom opening side, the middle and the top opening side of the anti-diffusion plate are respectively installed with a flow velocity sensor and a flow rate sensor, and the stirring motor, the flow velocity sensor and the flow rate sensor are respectively electrically connected to the controller.

[0012] Beneficial effects: 1. The present invention is provided with a quenching shell, a stirring assembly and a guide assembly. The quenching tank in the quenching shell is provided with a material platform. The guide assembly includes a guide pipe. It includes a main guide pipe and a sub-guide pipe. The main guide pipe is a cavity structure with an opening on one side and a hollow interior, and is fixedly installed at the bottom of the quenching shell. The material platform is installed on the open side of the main guide pipe. The sub-guide pipe is vertically fixedly installed on the main guide pipe, and the sub-guide pipe is connected to the main guide pipe. The stirring assembly includes a stirring motor and a stirring blade. The power end of the stirring motor extends into the sub-guide pipe and is fixedly connected to the stirring blade. The number of sub-guide pipes is several, and the sub-guide pipes are divided into at least three groups along the circumference of the material platform. Each group includes at least two sub-guide pipes. At least three groups of stirring assemblies are arranged on the outside of the material platform, replacing the traditional scheme of arranging stirring assemblies on both sides, to achieve dispersed stirring, so that the stirring range is larger, the overall flow capacity of the stirring medium is improved, and the circumferential unevenness caused by the uneven traditional stirring drive is suppressed.

[0013] 2. Building on the above, the present invention incorporates a guide plate at the opening of the main flow pipe; the guide plate is provided with diversion holes evenly spaced apart. By employing a mesh-type guide plate beneath the workpiece to homogenize the stirring medium, this overcomes the drawback of conventional quenching equipment, which employs strip-shaped guide plates at the bottom, which merely guide the stirring medium without homogenizing it. This improves the overall uniformity of the stirring medium beneath the workpiece.

[0014] 3. Building on the above, the flow guide assembly of the present invention includes an anti-diffusion plate with two openings and a hollow interior, which is mounted outside the workpiece platform. The anti-diffusion plate has a radial height at least greater than the height of the workpiece, and the height of the secondary flow guide tube away from the primary flow guide tube is at least greater than the radial height of the flow guide plate. This allows the addition of an anti-diffusion plate of optimized height around the workpiece to prevent excessive diffusion of the stirring fluid, which would decelerate the fluid above the workpiece. This ensures that the flow velocity is maintained along the height of the workpiece, improving the overall quenching effect of the stirring medium from bottom to top along the workpiece.

[0015] 4. Building on the above, the stirring assembly of the present invention further includes a control assembly, comprising a controller and sensors. The sensors include a flow velocity sensor and a flow rate sensor. The flow velocity sensor and flow rate sensor are mounted on at least the bottom, middle, and top opening sides of the diffusion barrier, respectively. The stirring motor, flow velocity sensor, and flow rate sensor are each electrically connected to the controller. This allows the stirring motor to utilize a variable frequency motor. The controller can independently adjust the speed of each motor based on the data from the monitored flow velocity and flow rate sensors, thereby improving the uniformity and stability of the overall fluid flow in the three-dimensional working space, thereby significantly enhancing product quality and stability.

[0016] 5. On the basis of the above, the aperture ratio of the guide plate and the radial height dimension of the anti-diffusion plate of the present invention are adapted to the flow rate of the stirring medium. The stirring medium is driven by the stirring blade and enters the anti-diffusion plate from the guide plate on the opening side of the main guide pipe to quench the workpiece until it flows out from the opening on the side of the anti-diffusion plate away from the main guide pipe, and then is driven by the stirring blade to be sucked into the secondary guide pipe to form a circulating stirring zone, and the stirring area of ​​the stirring zone at least covers the outer surface of the workpiece. In order to achieve a reasonable layout along the circumference of the material table by setting multiple groups of stirring components, compared with the traditional stirring structure, the stirring components of the present invention can mobilize a wider range of quenching medium, so that more quenching medium participates in heat exchange, thereby improving heat exchange efficiency. The aperture ratio of the guide plate is adapted to the radial height of the anti-diffusion plate and the flow rate of the stirring medium, so that when the stirring medium flows through the guide plate, it can also be ejected out along the guide hole of the guide plate without losing flow, making the entire diversion process more rapid and uniform. When the stirring medium enters the anti-diffusion plate, the stirring medium flows along the radial opening on the upper side of the anti-diffusion plate under the limitation of the anti-diffusion plate to prevent the rapid weakening of the fluid, so that the stirring medium can gradually reduce the flow rate in the radial direction when reaching the upper part of the workpiece, so as to achieve uniform quenching of the workpiece by the stirring medium, thereby improving the quenching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a three-dimensional quenching tank device with uniform flow in an embodiment; Figure 2 Schematic diagram of the structure of the lower shell of the three-dimensional space flow uniform quenching tank device of the embodiment; Figure 3 A structural side view of the lower shell of a three-dimensional space flow uniform quenching tank device according to an embodiment; Figure 4 A top view of the structure of the lower shell of the quenching tank device with uniform flow in a three-dimensional space according to an embodiment; Figure 5 for Figure 3 Cross-sectional view at AA in the middle; Figure 6 Schematic diagram comparing the quenching medium flow rate at the bottom monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the conventional quenching tank device; Figure 7 Schematic diagram comparing the flow rate of the quenching medium in the middle monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the traditional quenching tank device; Figure 8 Schematic diagram comparing the quenching medium flow rate at the top monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the conventional quenching tank device; Figure 9Schematic diagram comparing the flow rate of the quenching medium in the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the conventional quenching tank device; Figure 10 Schematic diagram comparing the flow rates of the quenching medium in the middle monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the traditional quenching tank device; Figure 11 Schematic diagram comparing the flow rates of the quenching medium in the top monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the conventional quenching tank device; Figure 12 Schematic diagram comparing the flow of quenching medium in the monitoring layer at the bottom of the quenching zone of the quenching tank device with uniform three-dimensional space flow in the embodiment and the traditional quenching tank device; Figure 13 Schematic diagram comparing the flow of quenching medium in the middle monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional space flow in the embodiment and the traditional quenching tank device; Figure 14 Schematic diagram comparing the flow of quenching medium in the top monitoring layer of the quenching zone of the quenching tank device with uniform three-dimensional space flow in the embodiment and the traditional quenching tank device; Figure 15 Schematic diagram showing a comparison of the flow rate and flow velocity values ​​of the quenching medium at each monitoring layer in the quenching zone of the quenching tank device with uniform three-dimensional spatial flow in the embodiment and the traditional quenching tank device; Figure 16 A simulated schematic diagram of a flow guide assembly of a quenching tank device with uniform flow in a three-dimensional space according to an embodiment; Figure 17 Schematic diagram of a simulation of a stirring zone of a quenching medium in a quenching tank device with uniform flow in a three-dimensional space according to an embodiment. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0019] See also Figure 1-Figure 5The present embodiment provides a quenching tank device with uniform flow in a three-dimensional space, comprising a quenching shell, a stirring assembly 4, and a flow guide assembly 6. The quenching shell of the present embodiment includes an upper shell 2 and a lower shell 5 along the radial direction. Both the upper shell and the lower shell are hollow cavity structures, and a quenching medium is provided inside the lower shell to form a quenching tank. The quenching tank in the quenching shell is provided with a material table 3; the flow guide assembly 6 includes an anti-diffusion plate 60 and a flow guide pipe; the anti-diffusion plate is open on both sides and has an internal hollow structure, and is sleeved on the outside of the material table; the flow guide pipe of the present embodiment includes a main flow guide pipe 61 and a secondary flow guide pipe 62; the main flow guide pipe is a cavity structure with an opening on one side and a hollow interior, and is fixedly installed at the bottom of the lower shell, the material table is installed on the open side of the main flow guide pipe, and the secondary flow guide pipe is vertically fixedly installed on the main flow guide pipe, and the secondary flow guide pipe is connected to the main flow guide pipe; the stirring assembly 4 of the present embodiment includes a stirring motor 40 and a stirring blade 41; the stirring motor is fixedly installed in the quenching shell, and its power end extends into the secondary flow guide pipe and is fixedly connected to the stirring blade.

[0020] The upper shell of this embodiment is equipped with a lifting assembly, which includes a lifting motor 1, a driving rod and a driving wheel; the driving rod is rotatably mounted on the upper shell, and the lifting motor 1 is fixedly mounted on the upper shell, and its power end is connected to the driving rod; a driving wheel is fixedly mounted on the driving rod, and the driving wheel is rotatably sleeved on a conveyor belt, and the conveyor belt is connected to the material table 3.

[0021] In order to improve the stirring effect of the stirring assembly, the number of auxiliary flow guides 62 in this embodiment is six, and the six auxiliary flow guides are divided into three groups along the circumference of the material table, and each group includes two auxiliary flow guides. The three groups of auxiliary flow guides are respectively installed on the left and right sides and the front area of ​​the lower shell. The opening shape of the opening side of the main flow guide of this embodiment is adapted to the shape of the material table. The material table of this embodiment is a square structure, and the opening size of the main flow guide is adapted to the size of the material table. In order to improve the stirring uniformity of the quenching medium in the quenching tank, this embodiment installs a flow guide plate 7 at the opening of the main flow guide; the flow guide plate is evenly spaced with flow guide holes. In addition, the radial height of the anti-diffusion plate of this embodiment is greater than the height of the workpiece, and the height dimension of the tube body of the auxiliary flow guide away from the main flow guide is greater than the radial height dimension of the flow guide plate. In addition, the opening rate of the guide plate and the radial height dimension of the anti-diffusion plate of this embodiment are adapted to the flow rate of the quenching medium. The quenching medium is driven by the stirring blades and enters the anti-diffusion plate from the guide plate on the opening side of the main guide pipe to quench the workpiece until it flows out from the opening on the side of the anti-diffusion plate away from the main guide pipe, and is then driven by the stirring blades to be sucked into the secondary guide pipe to form a circulating stirring zone, and the stirring area of ​​the stirring zone at least covers the outer surface of the workpiece.

[0022] In addition, the stirring assembly of this embodiment also includes a control assembly, which includes a controller and a sensor. The sensor includes a flow velocity sensor and a flow rate sensor. The plate bodies on the bottom opening side, middle and top opening sides of the anti-diffusion plate are respectively installed with flow velocity sensors and flow rate sensors, and the stirring motor, flow velocity sensor and flow rate sensor are respectively electrically connected to the controller.

[0023] Working Principle: When using this embodiment of the three-dimensional, uniform-flow quenching tank device, the workpiece to be quenched is hoisted above the upper housing via a material unloading device, and then the upper housing cover is opened. The material table located in the lower housing is then driven by a lifting motor to rise to the upper housing. The workpiece to be quenched is then hoisted onto the material table. The upper housing cover is then closed, and the material table is driven by a lifting motor to move into the quenching tank in the lower housing.

[0024] When the material platform reaches the opening of the main guide tube, the lifting motor stops. The controller activates the stirring motor, driving the stirring blades to rotate and stir. Driven by the stirring blades, the quenching medium enters the main guide tube along the secondary guide tube. From the opening of the main guide tube, it then flows through the guide plate's guide holes and into the inner cavity of the diffusion barrier. Because the guide holes are evenly distributed along the guide plate, the quenching medium, driven by the stirring blades, can be evenly ejected along the guide holes without loss of flow. After being ejected from the guide plate, the quenching medium rises uniformly in the radial direction, limited by the diffusion barrier. During this rise, it quenches the workpiece on the material platform until it reaches the upper opening of the diffusion barrier. Then, driven by the stirring blades of the secondary guide tube outside the diffusion barrier, the quenching medium flows back into the secondary guide tube. This cycle repeats, forming a circulating stirring zone within the quenching tank, with the stirring area in this zone completely covering the outer surface of the workpiece.

[0025] In order to verify that the quenching tank device with uniform flow in the three-dimensional space of this embodiment can effectively improve the flow uniformity of the quenching medium in the three-dimensional space. This embodiment is experimentally compared by means of numerical simulation. The internal cavity of the anti-diffusion plate in the quenching shell is now divided radially into three monitoring layers on the bottom, middle and top surfaces. A sampling device is provided on each monitoring layer, and the surface where the sampling device is located is defined as the monitoring surface. The flow velocity and flow rate of the quenching medium in each monitoring layer are monitored by sampling and calculation. At the same time, a comparison group is set up. The difference between the comparison group and the quenching tank device of this embodiment is that the guide plate of the quenching device of the comparison group is a strip guide plate, and no anti-diffusion plate is provided. Through experiments, it is found that under the conditions of ensuring the same quality of the quenching medium and the same distribution of the stirring components, a comparison diagram of the flow conditions of the quenching medium on the monitoring surface of the comparison group and the embodiment is obtained by numerical simulation. Please refer to Figure 6-Figure 14 The flow rate and flow rate data of the quenching medium of the comparative group and the embodiment are as follows: Figure 15As shown, it is found that the three-dimensional space flow uniform quenching tank device of this embodiment significantly increases the uniformity of the quenching medium flow on each monitoring surface. In addition, this embodiment simulates the flow trajectory of the quenching medium in the quenching tank to obtain a simulation schematic diagram of the stirring zone of the quenching medium. Figure 16-17 .

[0026] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A quenching tank device with uniform flow in a three-dimensional space, comprising a quenching shell, a stirring assembly and a flow guide assembly, characterized in that: The quenching shell includes an upper shell and a lower shell along the radial direction, and the upper shell and the lower shell are both hollow cavity structures, and a quenching medium is provided inside the lower shell to form a quenching tank; the quenching tank in the quenching shell is provided with a material table; the guide assembly includes an anti-diffusion plate and a guide pipe; the anti-diffusion plate is open on both sides, has an internal hollow structure, and is sleeved on the outside of the material table; the guide pipe includes a main guide pipe and a secondary guide pipe; the main guide pipe is a cavity structure with an open side and a hollow interior, and is fixedly installed on the bottom of the lower shell, and the material table is installed on the open side of the main guide pipe; the secondary guide pipe is vertically installed on the outside of the anti-diffusion plate, and is fixedly installed on the main guide pipe, and the secondary guide pipe is connected to the main guide pipe; the stirring assembly includes a stirring motor and a stirring blade; the stirring motor is fixedly installed on the quenching shell, and its power end extends into the secondary guide pipe and is fixedly connected to the stirring blade.

2. A three-dimensional quenching tank device with uniform flow according to claim 1, characterized in that: The upper shell is equipped with a lifting assembly, which includes a lifting motor, a driving rod and a driving wheel; the driving rod is rotatably mounted on the upper shell, the lifting motor is fixedly mounted on the upper shell, and its power end is connected to the driving rod; the driving wheel is fixedly mounted on the driving rod, and the driving wheel is rotatably sleeved on the conveyor belt, and the conveyor belt is connected to the material platform.

3. The three-dimensional quenching tank device with uniform flow according to claim 1, characterized in that: There are several auxiliary flow guide tubes, and the auxiliary flow guide tubes are divided into at least three groups along the circumference of the material table, and each group includes at least two auxiliary flow guide tubes.

4. The three-dimensional quenching tank device with uniform flow according to claim 3, characterized in that: The opening shape of the opening side of the main duct is adapted to the shape of the material platform, and the opening size of the main duct is adapted to the size of the material platform.

5. The three-dimensional quenching tank device with uniform flow according to claim 1, characterized in that: A guide plate is installed at the opening of the main guide pipe; and diversion holes are evenly spaced on the guide plate.

6. The three-dimensional quenching tank device with uniform flow according to claim 1, characterized in that: The radial height of the anti-diffusion plate is at least greater than the height of the workpiece, and the height of the secondary guide pipe away from the main guide pipe is at least greater than the radial height of the guide plate.

7. The three-dimensional quenching tank device with uniform flow according to claim 5, characterized in that: The opening ratio of the guide plate and the radial height dimension of the anti-diffusion plate are adapted to the flow rate of the stirring medium. The stirring medium is driven by the stirring blades and enters the anti-diffusion plate from the guide plate on the opening side of the main guide pipe to quench the workpiece until it flows out from the opening on the side of the anti-diffusion plate away from the main guide pipe, and then is driven by the stirring blades to be sucked into the secondary guide pipe to form a circulating stirring zone, and the stirring area of ​​the stirring zone at least covers the outer surface of the workpiece.

8. The three-dimensional quenching tank device with uniform flow according to claim 1, characterized in that: The stirring assembly also includes a control assembly, which includes a controller and sensors. The sensors include a flow velocity sensor and a flow rate sensor. The plate body of at least the bottom opening side, the middle and the top opening side of the anti-diffusion plate is respectively installed with a flow velocity sensor and a flow rate sensor, and the stirring motor, the flow velocity sensor and the flow rate sensor are respectively electrically connected to the controller.

Images