A heat treatment device for chain production

Abstract

The present invention discloses a heat treatment device for chain production, comprising a plurality of quenching tanks; each quenching tank is provided with an overflow port and an oil filling port on one inner wall; each quenching tank includes a transmission mechanism and a heat dissipation mechanism; the transmission mechanism includes a plurality of transmission wheels, a transmission chain, and a drive motor, the drive motor driving the transmission wheels to rotate, and a plurality of hanging rods are provided on the outer walls of both sides of the transmission chain; the heat dissipation mechanism includes a delivery pump and a heat exchanger, the input end of the delivery pump is connected to the overflow port, the output end of the delivery pump is connected to the input end of the heat exchanger, and the output end of the heat exchanger is connected to the oil filling port; the frequency conversion controller is electrically connected to the transmission mechanism and the heat dissipation mechanism, respectively. The present invention not only improves the continuity of chain quenching, but also effectively solves the problem of excessive quenching oil temperature affecting the chain heat treatment effect, thereby ensuring the quality of chain heat treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of chain production, in particular to a heat treatment device for chain production. Background Art

[0002] Chains are widely used mechanical transmission and traction components, typically made of metal and primarily ring-shaped. Chains can be categorized by purpose and function into transmission chains, conveyor chains, traction chains, and specialized rotating chains. Chains with specialized applications must undergo heat treatment during production. This process improves the hardness and toughness of the chain's metal components, thereby enhancing the chain's overall mechanical properties and ensuring they meet the requirements of the intended application.

[0003] In the existing production process of large and medium-sized round link chains, the entire chain is usually heated and heat treated after chain assembly is completed. In order to improve production efficiency, a continuous chain assembly, heating and heat treatment production line has emerged. After the chain assembly is completed, the chain can be directly input into the heating equipment, heated and then immersed in quenching oil for a continuous heat treatment process.

[0004] During the continuous quenching of round-link chains, the chain is continuously exposed to quenching oil, causing a rapid temperature rise in the area where the chain contacts the quenching oil surface. This prolonged heat exchange between the quenching oil and the hot chain causes the quenching oil in this area to exceed the optimal quenching temperature range. As the chain continues to move, the hot chain continues to exchange heat with the quenching oil in this area, causing the quenching oil temperature to gradually rise. This affects not only the quenching effect of the current chain segment, but also that of subsequent chain segments.

[0005] If the quenching oil temperature is too high, it will not only slow down the cooling speed of the chain, causing the chain to have soft spots or substandard hardness during heat treatment, but also cause the quenching oil to deteriorate. Secondly, the quenching oil temperature is too high, which will also cause the metallographic structure of the chain to change, affecting the mechanical properties of the chain and causing the chain production to fail to meet the use requirements.

[0006] In the existing oil quenching method, stirring is usually used to make the quenching oil flow and maintain the overall temperature balance of the quenching oil. However, the above method still cannot solve the problem of the overall temperature rise of the quenching oil. After a large number of quenching operations, the temperature of the quenching oil will still exceed the optimal quenching temperature range, thereby affecting the quenching effect of the chain. Therefore, in the heat treatment process of high-performance round chain, the temperature of the quenching oil determines the effect of the heat treatment of the round chain, and also determines the mechanical properties of the round chain after heat treatment, highlighting the importance of quenching treatment in the chain production process. Summary of the Invention

[0007] The object of the present invention is to provide a heat treatment device for chain production to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a heat treatment device for chain production, comprising a plurality of quenching tanks;

[0009] Each of the quenching tanks is provided with a partition plate, and an inner wall of one side of each of the quenching tanks is provided with an overflow port and an oil filling port;

[0010] Each of the quenching tanks includes a transmission mechanism and a heat dissipation mechanism;

[0011] The transmission mechanism is arranged inside the quenching tank, and the transmission mechanism includes multiple transmission wheels, a transmission chain and a drive motor. The drive motor drives the transmission wheels to rotate, and the multiple transmission wheels drive the transmission chain to rotate. The transmission chain is a closed loop, and multiple hanging rods are provided on the outer walls of both sides of the transmission chain;

[0012] The heat dissipation mechanism includes a delivery pump and a heat exchanger, the input end of the delivery pump is connected to the overflow port, the output end of the delivery pump is connected to the input end of the heat exchanger, and the output end of the heat exchanger is connected to the oil filling port;

[0013] Each of the quenching tanks further includes a frequency conversion controller, which is electrically connected to the transmission mechanism and the heat dissipation mechanism respectively.

[0014] Preferably, a plurality of thermocouple modules are embedded and installed inside the partition, and the plurality of thermocouple modules are linearly distributed on the surface of the partition.

[0015] Preferably, the overflow port is located above the oil filling port.

[0016] Preferably, the transmission wheel surface is provided with teeth and grooves.

[0017] Preferably, the chain links on the surface of the conveyor chain are engaged with the transmission wheels.

[0018] Preferably, a first temperature sensor is installed inside the overflow port;

[0019] A second temperature sensor is installed inside the oil filling port.

[0020] Preferably, a shunt pipe is provided between the output end of the delivery pump and the input end of the heat exchanger.

[0021] Preferably, a collecting pipe is provided between the output end of the heat exchanger and the input end of the oil filling port.

[0022] Preferably, a heating assembly is provided at one end of the manifold away from the oil filling port, and the heating assembly includes a heating rod, which is inserted into the interior of the manifold.

[0023] Preferably, the heat dissipation mechanism further includes a fan, and the fan is arranged on a side surface of the heat exchanger.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention achieves the effect of continuous heat treatment of the chain by setting a transmission mechanism. The chain is continuously input into the quenching tank through the transmission mechanism, and the chain can be continuously quenched, which not only ensures the comprehensiveness of the chain quenching, but also reduces the heating rate of the quenching oil, thereby ensuring the quenching quality of the chain.

[0026] 2. The present invention achieves the effect of circulating cooling of the quenching oil by arranging a heat dissipation component. The overflow port can output the quenching oil in the area with faster temperature rise. The heat dissipation mechanism can cool the quenching oil with higher temperature and circulate the cooled quenching oil to the quenching tank, so as to achieve the effect of the quenching oil circulating along the surface of the chain. It not only solves the problem of faster temperature rise of the quenching oil in the contact area between the chain and the quenching oil liquid surface, but also makes the cooling of the quenching oil more targeted. At the same time, it also effectively ensures that the quenching oil as a whole is within the optimal quenching temperature range, thereby ensuring the heat treatment effect of the chain.

[0027] 3. The present invention achieves the effect of preheating the quenching oil through the heating component. Before the quenching process starts, the heating component can preheat the quenching oil to keep the quenching oil within an appropriate temperature range to prevent the quenching oil temperature from being too low and affecting the chain quenching effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the internal structure of the quenching tank in Example 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the exploded structure of the heat dissipation mechanism parts in the first embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the appearance structure of the quenching tank in Example 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the quenching tank arrangement structure of Example 2 of the present invention.

[0032] In the picture:

[0033] 100, quenching tank; 110, partition; 111, thermocouple module; 120, overflow port; 121, first temperature sensor; 130, oil filling port; 131, second temperature sensor;

[0034] 200, transmission mechanism; 210, transmission wheel; 220, transmission chain; 221, hanging rod; 230, driving motor;

[0035] 300, heat dissipation mechanism; 310, delivery pump; 320, diverter pipe; 330, heat exchanger; 340, fan; 350, header;

[0036] 400. Heating component; 410. Heating rod. DETAILED DESCRIPTION

[0037] 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.

[0038] See also Figures 1 to 4 , the present invention provides the following two embodiments:

[0039] Example 1:

[0040] See also Figure 1 A heat treatment device for chain production includes a plurality of quenching tanks 100, which are used to contain quenching oil, and the liquid level of the quenching oil is higher than the height of the overflow port 120.

[0041] A partition 110 is provided inside each quenching tank 100, and a plurality of thermocouple modules 111 are embedded and installed inside the partition 110. The plurality of thermocouple modules 111 are linearly distributed on the surface of the partition 110. The partition 110 is used to isolate the internal space of the quenching tank 100, narrow the quenching range of the chain, and realize the circulation of the quenching oil in the space on one side of the partition 110. The thermocouple module 111 is used to monitor the quenching oil temperature at different height positions in the space on one side of the partition 110, so as to grasp the temperature level status of the quenching oil. The quenching oil temperature values at different positions are transmitted to the frequency conversion controller in real time. The frequency conversion controller controls the working status of the transmission mechanism 200 and the heat dissipation mechanism 300 according to the quenching oil temperature value, thereby improving the flexibility of practical application and being applicable to different quenching requirements and quenching workpieces.

[0042] An overflow port 120 and an oil filling port 130 are provided on the inner wall of one side of each quenching tank 100. The overflow port 120 is located above the oil filling port 130. When the chain follows the conveyor chain 220 for transmission, the high-temperature chain continuously contacts the liquid surface of the quenching oil and exchanges heat with the quenching oil. At this time, the temperature rise rate of the quenching oil is relatively fast. The quenching oil in the area with faster temperature rise can be output through the overflow port 120 and the delivery pump 310. The heat dissipation mechanism 300 can cool the quenching oil with higher temperature and circulate the cooled quenching oil to the quenching tank 100, so as to achieve the effect of the quenching oil circulating along the surface of the chain. This not only solves the problem of the quenching oil temperature rising rapidly in the contact area between the chain and the quenching oil liquid surface, but also makes the cooling of the quenching oil more targeted. At the same time, it also effectively ensures that the quenching oil is within the optimal quenching temperature range as a whole, thereby ensuring the heat treatment effect of the chain.

[0043] A first temperature sensor 121 is installed inside the overflow port 120, and a second temperature sensor 131 is installed inside the oil filling port 130. The first temperature sensor 121 and the second temperature sensor 131 are respectively used to detect the temperature of the quenching oil flowing in the overflow port 120 and the oil filling port 130, and upload the quenching oil temperature to the frequency conversion controller in real time, which helps the frequency conversion controller to regulate the working state of the heat dissipation mechanism 300 according to the temperature of the quenching oil flowing in the overflow port 120 and the oil filling port 130. The frequency conversion controller can adjust the pumping speed of the delivery pump 310 and the speed of the fan 340 respectively to regulate the cooling rate of the quenching oil.

[0044] See also Figure 1 Each quenching tank 100 includes a transmission mechanism 200 and a heat sink 300. Each quenching tank 100 also includes a frequency conversion controller electrically connected to the transmission mechanism 200 and the heat sink 300. The frequency conversion controller is used to control the operating status of the transmission mechanism 200 and the heat sink 300, respectively. The frequency conversion controller can be flexibly adjusted according to the actual working conditions, making it suitable for quenching operations under different conditions.

[0045] The transmission mechanism 200 is disposed within the quenching tank 100 and includes a plurality of transmission wheels 210, a transmission chain 220, and a drive motor 230. The drive motor 230 drives the transmission wheels 210 to rotate. The transmission wheels 210 are provided with tooth grooves, and the chain links on the surface of the transmission chain 220 mesh with the transmission wheels 210. The plurality of transmission wheels 210 drive the transmission chain 220 to rotate. The transmission chain 220 is a closed loop, and a plurality of hanging rods 221 are provided on the outer walls of the transmission chain 220 on both sides. The chain is fed into the quenching tank 100 from the side near the heat dissipation mechanism 300. After being heated, the chain is manually guided to the area where the hanging rods 221 are located. The hanging rods 221 pass through the gaps between the chain links, thereby suspending the chain on the surface of the transmission chain 220. As the transmission chain 220 is transported, it continuously enters the quenching tank 100 and comes into contact with the quenching oil contained in the quenching tank 100, undergoing a quenching process on the chain. After the quenching treatment, the temperature of the chain drops rapidly, and the staff can use the baffle to guide the chain so that the chain is separated from the hanging rod 221, and the conveyor chain 220 rotates to continuously transmit the chain.

[0046] See also Figure 1 and Figure 2 The heat dissipation mechanism 300 includes a delivery pump 310 and a heat exchanger 330. The input end of the delivery pump 310 is connected to the overflow port 120, and the output end of the delivery pump 310 is connected to the input end of the heat exchanger 330. A diverter pipe 320 is provided between the output end of the delivery pump 310 and the input end of the heat exchanger 330. The diverter pipe 320 can divert the output end of the delivery pump 310, thereby quickly injecting the quenching oil into the interior of the heat exchanger 330.

[0047] The output end of the heat exchanger 330 is connected to the oil filling port 130. A manifold 350 is provided between the output end of the heat exchanger 330 and the input end of the oil filling port 130. The manifold 350 is used to collect the quenching oil transmitted through the heat exchanger 330 and re-inject it into the quenching tank 100 through the oil filling port 130. The heat dissipation mechanism 300 also includes a fan 340 and an inverter. The fan 340 is provided on a side surface of the heat exchanger 330. The fan 340 is used to generate airflow and pass the airflow through the interior of the heat exchanger 330. Heat exchange is generated by the contact between the air and the surface of the heat exchanger 330, thereby achieving the effect of cooling the quenching oil flowing within the heat exchanger 330.

[0048] During the circulation of the quenching oil, the overflow port 120 outputs the quenching oil, and the quenching oil is output into the quenching tank 100 from the oil filling port 130. In conjunction with the transmission of the chain, the flow direction of the quenching oil is opposite to the transmission direction of the chain, so that the quenching oil in the optimal quenching temperature range can be fully contacted with the chain surface, effectively ensuring the quenching effect of the chain.

[0049] A heating assembly 400 is provided at one end of the manifold 350 away from the oil inlet 130. The heating assembly 400 includes a heating rod 410, which is inserted into the manifold 350 and electrically connected to the frequency converter. Prior to quenching, the heating assembly 400 circulates the quenching oil in the quenching tank 100 via the delivery pump 310 and stops the rotation of the fan 340. As the quenching oil passes through the manifold 350, the heating rod 410 generates heat, heating the flowing quenching oil until the quenching oil in the quenching tank 100 is within a suitable temperature range. This prevents the quenching oil from being too cold during quenching, which could affect the chain hardness, the comprehensiveness of the quenching of the microstructure, and changes in the quenching oil quality.

[0050] After the quenching oil in the quenching tank 100 is preheated, the transmission mechanism 200 drives the conveyor chain 220 to move through the driving motor 230, and the chain suspended on the surface of the hanging rod 221 can be continuously transported to the quenching tank 100. After the chain contacts the quenching oil, a continuous quenching operation is performed. The contact between the chain suspended on the surface of the hanging rod 221 and the quenching oil is more comprehensive, which is conducive to improving the quenching effect of the chain.

[0051] When the chain continuously enters the quenching oil, the thermocouple module 111 respectively detects the quenching oil temperature at different positions and heights in the quenching tank 100. When the temperature at the quenching oil liquid surface is high, the heat dissipation mechanism 300 is started, and the quenching oil at the overflow port 120 is pumped out to the heat dissipation mechanism 300 through the delivery pump 310. The fan 340 rotates to generate airflow to cool the quenching oil flowing in the heat exchanger 330. After cooling, the quenching oil is collected through the collecting pipe 350 and flows back to the quenching tank 100 again, forming a circulating flow and cooling of the quenching oil, and keeping the quenching oil in a suitable temperature range to ensure the quenching effect of the chain.

[0052] The frequency conversion controller obtains the temperature conditions of the quenching oil at different nodes through multiple thermocouple modules 111, the first temperature sensor 121 and the second temperature sensor 131, and issues control instructions to the transmission mechanism 200, the heat dissipation mechanism 300 and the heating component 400 according to the temperature of the quenching oil, so that the quenching oil circulation process is more controllable and can be flexibly adjusted according to actual application conditions to adapt to the heat treatment parameters corresponding to different chains.

[0053] Example 2:

[0054] Based on the above disclosure of the present invention, another embodiment is proposed:

[0055] See also Figure 4, multiple quenching tanks 100 are arranged side by side. When multiple quenching tanks 100 are used for quenching operations on different chains, the transmission mechanism 200, the heat dissipation mechanism 300 and the heating component 400 in each quenching tank 100 can be set with different working data, thereby achieving the effect of different temperatures of the quenching oil in different quenching tanks 100. By quenching with different quenching oils, different chains can obtain different mechanical properties after quenching.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A heat treatment device for chain production, characterized in that: including a plurality of quenching tanks (100); A partition (110) is provided inside each of the quenching tanks (100), and an overflow port (120) and an oil filling port (130) are provided on one inner wall of each of the quenching tanks (100); Each of the quenching tanks (100) includes a transmission mechanism (200) and a heat dissipation mechanism (300); The transmission mechanism (200) is arranged inside the quenching tank (100), and the transmission mechanism (200) includes a plurality of transmission wheels (210), a transmission chain (220) and a driving motor (230). The driving motor (230) drives the transmission wheels (210) to rotate, and the plurality of transmission wheels (210) drive the transmission chain (220) to rotate. The transmission chain (220) is in a closed loop shape, and a plurality of hanging rods (221) are provided on the outer walls of both sides of the transmission chain (220); The heat dissipation mechanism (300) comprises a delivery pump (310) and a heat exchanger (330), wherein the input end of the delivery pump (310) is connected to the overflow port (120), the output end of the delivery pump (310) is connected to the input end of the heat exchanger (330), and the output end of the heat exchanger (330) is connected to the oil filling port (130); Each of the quenching tanks (100) further includes a frequency conversion controller, wherein the frequency conversion controller is electrically connected to the transmission mechanism (200) and the heat dissipation mechanism (300) respectively; A plurality of thermocouple modules (111) are embedded and installed inside the partition (110), and the plurality of thermocouple modules (111) are linearly distributed on the surface of the partition (110); The overflow port (120) is located above the oil filling port (130); The transmission wheel (210) has a tooth groove formed on its surface; The chain links on the surface of the conveying chain (220) are meshed with the transmission wheel (210); A first temperature sensor (121) is installed inside the overflow port (120); A second temperature sensor (131) is installed inside the oil filling port (130); A shunt pipe (320) is provided between the output end of the delivery pump (310) and the input end of the heat exchanger (330); A collecting pipe (350) is provided between the output end of the heat exchanger (330) and the input end of the oil filling port (130); A heating component (400) is provided at one end of the manifold (350) away from the oil filling port (130), and the heating component (400) includes a heating rod (410), and the heating rod (410) is plugged into the interior of the manifold (350); The heating component (400) is electrically connected to the frequency conversion controller.

2. A heat treatment device for chain production according to claim 1, characterized in that: The heat dissipation mechanism (300) further comprises a fan (340) and a frequency converter, wherein the fan (340) is arranged on a side surface of the heat exchanger (330).

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