Heat treatment device for chain production

Abstract

The invention discloses a heat treatment device for chain production. The heat treatment device comprises a plurality of quenching tanks, an overflow port and an oil injection port are formed in the inner wall of one side of each quenching tank; each quenching tank comprises a transmission mechanism and a heat dissipation mechanism; the conveying mechanism comprises a plurality of transmission wheels, a conveying chain and a driving motor, the driving motor drives the transmission wheels to rotate, and a plurality of hanging rods are arranged on the outer walls of the two sides of the conveying chain; the heat dissipation mechanism comprises a delivery pump and a heat exchanger, the input end of the delivery pump is communicated with the overflow port, the output end of the delivery pump is communicated with the input end of the heat exchanger, and the output end of the heat exchanger is communicated with the oil injection port; the variable frequency controller is electrically connected with the transmission mechanism and the heat dissipation mechanism. The chain quenching continuity is improved, the problem that the chain heat treatment effect is affected due to the fact that the temperature of quenching oil is too high is effectively solved, and the chain heat treatment quality is ensured.

Description

Technical Field

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

[0002] Chain is a widely used mechanical transmission and traction component, generally made of metal, and mainly in the shape of a ring. Chains can be divided into transmission chains, conveyor chains, traction chains and rotating special chains according to their uses and functions. Chains with special uses must undergo a heat treatment process during the production and processing process. Heat treatment can improve the hardness, toughness and other characteristics of the metal parts in the chain, thereby improving the overall mechanical properties of the chain to ensure that the performance of the chain meets the needs of actual applications.

[0003] In the existing production process of large and medium-sized round link chains, generally, after the chain is assembled, the whole chain is heated and heat treated. In order to improve production efficiency, a continuous production line of chain assembly, heating and heat treatment has emerged. After the chain is assembled, 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 process of the round chain, since the round chain is continuously fed into the quenching oil, the temperature of the contact area between the chain and the quenching oil surface will rise rapidly. After the quenching oil in this area has been heat exchanged with the high-temperature chain for a long time, the temperature of the quenching oil in this area is higher than the optimal temperature range for quenching. As the chain is continuously transmitted, the high-temperature chain continues to exchange heat with the quenching oil in this area, causing the temperature of the quenching oil to gradually rise, which will not only affect the quenching effect of the current chain segment, but also affect the quenching effect of the subsequent chain segment.

[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, if the quenching oil temperature is too high, it will also cause the metallographic structure in the chain to change, affecting the mechanical properties of the chain, 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 link chains, the temperature of the quenching oil determines the effect of the heat treatment of the round link chain, and also determines the mechanical properties of the round link 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 inside, and an overflow port and an oil filling port are provided on one inner wall of each of the quenching tanks;

[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 a plurality of transmission wheels, a transmission chain and a driving motor. The driving motor drives the transmission wheels to rotate, and the plurality of transmission wheels drive the transmission chain to rotate. The transmission chain is a closed loop, and a plurality of hanging rods are arranged on the outer walls on both sides of the transmission chain.

[0012] The heat dissipation mechanism comprises 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 tooth grooves.

[0017] Preferably, the chain links on the surface of the conveyor chain are meshed 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 component is provided at one end of the collecting pipe away from the oil filling port, and the heating component includes a heating rod, and the heating rod is inserted into the interior of the collecting pipe.

[0023] Preferably, the heat dissipation mechanism further includes a fan, and the fan is disposed 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, thereby achieving the effect of the quenching oil circulating along the surface of the chain. This not only solves the problem of the rapid 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 a suitable 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 the first embodiment of the present invention;

[0029] Figure 2 It 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 the second embodiment of the present invention.

[0032] In the figure:

[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, shunt pipe; 330, heat exchanger; 340, fan; 350, header;

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

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0039] Embodiment 1:

[0040] See also Figure 1 A heat treatment device for chain production includes a plurality of quenching tanks 100 , wherein the quenching tanks 100 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, reduce 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 heights in the space on one side of the partition 110, so as to grasp the temperature level 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 conveying 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 quickly 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 is beneficial for the frequency conversion controller to adjust 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 rotation speed of the fan 340 respectively to adjust the cooling speed of the quenching oil.

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

[0045] The transmission mechanism 200 is arranged inside the quenching tank 100. 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 wheel 210 to rotate. The surface of the transmission wheel 210 is provided with tooth grooves. The chain links on the surface of the transmission chain 220 mesh with the transmission wheel 210. The plurality of transmission wheels 210 drives the transmission chain 220 to rotate. The transmission chain 220 is a closed ring. The outer walls of both sides of the transmission chain 220 are provided with a plurality of hanging rods 221. The chain is input from the side of the quenching tank 100 close to the heat dissipation mechanism 300. The heated chain is manually guided to the area where the hanging rods 221 are located, and passes through the gaps between the chains through the hanging rods 221, so that the chain is suspended on the surface of the transmission chain 220. With the transmission of the transmission chain 220, it continuously enters the quenching tank 100 and contacts with the quenching oil contained in the quenching tank 100 to perform the quenching treatment of 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 shunt pipe 320 is arranged between the output end of the delivery pump 310 and the input end of the heat exchanger 330. The shunt pipe 320 can shunt the output end of the delivery pump 310, thereby quickly injecting the quenching oil into 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 in the heat exchanger 330 and inject it into the quenching tank 100 again through the oil filling port 130. The heat dissipation mechanism 300 also includes a fan 340 and a frequency converter. The fan 340 is provided on one side surface of the heat exchanger 330. The fan 340 is used to generate airflow and pass the airflow through the inside of the heat exchanger 330. Heat exchange is generated by the contact between the air and the surface of the heat exchanger 330, so as to achieve the effect of cooling the quenching oil flowing inside 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 from the oil filling port 130 into the quenching tank 100. In conjunction with the transmission of the chain, the quenching oil flow direction is opposite to the chain transmission direction, so that the quenching oil in the optimal quenching temperature range can be fully in contact 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 filling port 130, and the heating assembly 400 includes a heating rod 410, which is plugged into the manifold 350, and the heating assembly 400 is electrically connected to the frequency conversion controller. Before the quenching work, the heating assembly 400 can circulate the quenching oil in the quenching tank 100 through the delivery pump 310, and stop the rotation of the fan 340. When the quenching oil passes through the manifold 350, the heating rod 410 generates heat to heat the flowing quenching oil until the quenching oil in the quenching tank 100 is in a suitable temperature range, so as to avoid the problem that the temperature of the quenching oil is too low during the quenching process, which affects the chain hardness, the comprehensiveness of the quenching of the organizational structure, and the change of the quenching oil quality.

[0050] After preheating the quenching oil in the quenching tank 100, the transmission mechanism 200 drives the conveyor chain 220 to move through the driving motor 230, so that 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 beneficial 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 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 the quenching oil is cooled, it 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 the quenching oil is kept 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] Embodiment 2:

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

[0055] See also Figure 4A plurality of quenching tanks 100 are arranged side by side. When the plurality of quenching tanks 100 are respectively 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 set different working data, thereby achieving the effect of different temperatures of 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 invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A heat treatment device for chain production, characterized in that: comprising a plurality of quenching tanks (100); Each of the quenching tanks (100) is provided with a partition (110) inside, and an overflow port (120) and an oil filling port (130) are provided on an inner wall of one side of each of the quenching tanks (100); Each of the quenching tanks (100) comprises a transmission mechanism (200) and a heat dissipation mechanism (300); The transmission mechanism (200) is arranged inside the quenching tank (100), and comprises 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) drives the transmission chain (220) to rotate; the transmission chain (220) is in a closed loop shape, and a plurality of hanging rods (221) are arranged 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 comprises a frequency conversion controller, and the frequency conversion controller is electrically connected to the transmission mechanism (200) and the heat dissipation mechanism (300) respectively.

2. A heat treatment device for chain production according to claim 1, characterized in that: 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).

3. A heat treatment device for chain production according to claim 1, characterized in that: The overflow port (120) is located above the oil filling port (130).

4. A heat treatment device for chain production according to claim 1, characterized in that: The surface of the transmission wheel (210) is provided with tooth grooves.

5. A heat treatment device for chain production according to claim 1 or 4, characterized in that: The chain links on the surface of the conveying chain (220) are meshed with the driving wheel (210).

6. A heat treatment device for chain production according to claim 1, characterized in that: 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).

7. A heat treatment device for chain production according to claim 1, characterized in that: A shunt pipe (320) is provided between the output end of the delivery pump (310) and the input end of the heat exchanger (330).

8. A heat treatment device for chain production according to claim 1, characterized in that: 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).

9. A heat treatment device for chain production according to claim 8, characterized in that: 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) comprises 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.

10. 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, and the fan (340) is arranged on a side surface of the heat exchanger (330).

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