Heat exchanger shell bending machine

Abstract

The utility model relates to the technical field of bending machines, in particular to a bending machine for a heat exchanger shell, which not only can detect whether a bent pipeline is damaged or not and improve the quality of a heat exchanger finished product, but also can heat and quench a steel pipe to facilitate bending of the steel pipe and prevent the steel pipe from rebounding. Comprising a workbench, the bottom end of the workbench is connected with the ground, and a groove is formed in the workbench; the steel pipe bending machine further comprises a fixing mechanism, a moving mechanism, a heating mechanism, a bending mechanism, an inflation mechanism and a detection mechanism, the fixing mechanism is installed on the workbench and fixes one end of a steel pipe, the moving mechanism is installed on the workbench and facilitates adjustment of different bending lengths, and the heating mechanism is installed on the moving mechanism and heats the bent position. The bending mechanism is installed on the moving mechanism and drives the steel pipe to be bent, the inflation mechanism is installed on the fixing mechanism and inflates the steel pipe, and the detection mechanism is installed on the workbench and is used for quenching the bent position of the steel pipe and checking whether the bent position leaks air or not.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a heat exchanger shell bending machine. Background Art

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid. It is also called a heat exchanger. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial productions.

[0003] The existing heat exchanger shell bending machine, for example, a heat exchanger processing bending machine disclosed in the utility model patent with application number 202222507388.7, has a main structure including an extension rod, an additional joint, and a vertebrae connected to the end away from the extension rod, one side of the vertebrae is fixedly connected to an outer vertebral block, and the other side of the vertebrae away from the outer vertebral block is fixedly connected to an inner vertebral block, and several groups of vertebrae are rotatably connected; when in use, the bolts on the movable clamp are rotated to clamp the stainless steel pipe workpiece, and then the motor switch arranged at the bottom of the device is turned on, and the motor drives the bending machine turntable to rotate, and the rotation of the bending machine turntable drives the bending pulley to make a circular motion. After the bending pulley contacts the stainless steel pipe workpiece, the rotational force provided by the bending machine turntable is continuously applied to the stainless steel pipe workpiece and bends it. When the stainless steel pipe workpiece reaches a predetermined curvature, the motor power is turned off.

[0004] However, the steel pipe is easily broken at the outer ring after being bent, and the tiny cracks are difficult to detect with the human eye. In addition, the existing bending machine can easily cause the steel pipe to rebound after bending, affecting the bending angle and effect. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a heat exchanger shell bending machine which can not only detect whether the bent pipe is damaged, thereby improving the quality of the finished heat exchanger, but also heat and quench the steel pipe, thereby facilitating the bending of the steel pipe and preventing it from rebounding.

[0006] The utility model discloses a heat exchanger shell bending machine, comprising a workbench, the bottom end of which is connected to the ground, and a groove is formed on the workbench; the utility model also comprises a fixing mechanism, a moving mechanism, a heating mechanism, a bending mechanism, an inflation mechanism and a detection mechanism, wherein the fixing mechanism is installed on the workbench and fixes one end of a steel pipe, the moving mechanism is installed on the workbench and is convenient for adjusting different bending lengths, the heating mechanism is installed on the moving mechanism and heats the bending part, the bending mechanism is installed on the moving mechanism and drives the steel pipe to bend, the inflation mechanism is installed on the fixing mechanism and inflates the steel pipe, and the detection mechanism is installed on the On the workbench, the steel pipe is quenched at the bend and checked for air leaks; one end of the steel pipe is inserted into the fixing mechanism for fixing, and then the position of the moving mechanism is adjusted according to the required bending length. After moving to the specified position, the heating mechanism heats the bend, and then the bending mechanism is started to bend the steel pipe. After bending, the inflation mechanism delivers gas into the steel pipe. The staff moves the detection mechanism to the bend of the steel pipe and sprays soapy water on the bend, which can quench the bend to prevent it from rebounding, and the staff can observe whether there are bubbles at the bend to determine whether the pipeline is damaged.

[0007] Preferably, the fixing mechanism includes a fixing box, a rubber strip, two groups of cylinders and two groups of fixing clamps. The bottom end of the fixing box is connected to the top end of the workbench. A cavity is provided inside the fixing box. A fixing hole is provided at the front end of the fixing box. The rubber strip is installed at the fixing hole of the fixing box. The two groups of cylinders are relatively installed in the cavity of the fixing box. The two groups of fixing clamps are respectively installed on the two groups of cylinders. The staff inserts the steel pipe into the cavity of the fixing box, and prevents friction between the steel pipe and the fixing box by setting the rubber strip, thereby ensuring the quality of the finished product. Then, the two groups of cylinders are started, and the two groups of cylinders push the two groups of fixing clamps to clamp the steel pipe.

[0008] Preferably, the moving mechanism includes two groups of baffles, a servo motor, two groups of reducers, a transmission shaft, two groups of lead screws and a slide plate. The two groups of baffles are installed on the workbench, the servo motor and the two groups of reducers are installed on the same group of baffles, the transmission shaft is rotatably installed between the two groups of reducers, the two groups of lead screws are rotatably installed between the two groups of baffles and are respectively longitudinally connected to the two groups of reducers, and the slide plate is slidably installed on the two groups of lead screws; according to the required bending position, the servo motor is started, the servo motor drives the reducer connected to it to work, the reducer drives another group of reducer to work through the transmission shaft, the two groups of reducers drive the two groups of lead screws to rotate, and the two groups of lead screws drive the slide plate to move, so as to facilitate the heating mechanism and the bending mechanism to move to the position where the steel pipe needs to be bent.

[0009] Preferably, the heating mechanism includes a fuel barrel and an ignition nozzle, the bottom end of the fuel barrel is connected to the top of the slide plate, and the bottom end of the ignition nozzle is connected to the top of the fuel barrel; the staff adds fuel into the fuel barrel and ignites the ignition nozzle, and the ignition nozzle sprays flames to heat the bending part of the steel pipe, thereby preheating the steel pipe to reduce its hardness and increase its plasticity, which helps to reduce stress and rebound during the bending process.

[0010] Preferably, the bending mechanism includes servo motor 2, a reducer, a rotating shaft 1, a support frame, a connecting frame and a guide roller, the bottom end of servo motor 2 is connected to the top of the skateboard, the bottom end of the reducer is connected to the top of the skateboard, the rotating shaft 1 is rotatably installed on the reducer, the bottom end of the support frame is connected to the top of the skateboard and supports the rotating shaft 1, the connecting frame is installed on the rotating shaft 1, and the guide roller is rotatably installed on the connecting frame; start servo motor 2, servo motor 2 drives the rotating shaft 1 to rotate through the reducer, the stability of the rotating shaft 1 is enhanced by setting the support frame, the rotating shaft 1 drives the support frame and the connecting frame to rotate one hundred and eighty degrees, and the guide roller extrude and bends the steel pipe.

[0011] Preferably, the inflation mechanism includes an air pump, an air pipe, a connector and a sealing ring. The air pump is installed on a workbench, the air pipe is installed on the air pump, the connector is installed in the cavity of the fixed box and is connected to the inside of the air pipe, and the sealing ring is installed on the connector; one end of the steel pipe is inserted into the connector, and when the steel pipe is bent, the air pump is started, the air pump draws air and transports it to the connector through the air pipe, and the connector transports the air to the steel pipe. The sealing ring can be set to prevent air leakage at the connection.

[0012] Preferably, the detection mechanism includes a second rotating shaft, a support plate, a liquid storage tank, an infusion tube, a spray head and a valve. The bottom end of the second rotating shaft is rotatably mounted on the top of the workbench, the support plate is mounted on the second rotating shaft, the bottom end of the liquid storage tank is connected to the top of the support plate, the infusion tube is mounted on the liquid storage tank and communicated with the inside of the liquid storage tank, the spray head is mounted on the bottom end of the support plate and communicated with the inside of the infusion tube, and the valve is mounted on the infusion tube. After the steel pipe is bent, the staff rotates the second rotating shaft so that the spray head is located above the bending part of the steel pipe, opens the valve, and the soapy water in the liquid storage tank is transported to the spray head through the infusion tube. The spray head sprays the soapy water onto the bending part of the steel pipe to quench the steel pipe and reduce the temperature of the steel pipe. At the same time, the staff can observe whether there are bubbles on the surface to determine whether it is leaking.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: one end of the steel pipe is inserted into the fixing mechanism for fixing, and then the position of the moving mechanism is adjusted according to the required bending length, and after moving to the specified position, the heating mechanism heats the bending position, and then the bending mechanism is started to bend the steel pipe, and after bending, the inflation mechanism delivers gas into the steel pipe, and the staff moves the detection mechanism to the bending position of the steel pipe and sprays soapy water onto the bending position, which can quench the bending position to prevent it from rebounding, and the staff can observe whether there are bubbles at the bending position to determine whether the pipeline is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is a partially enlarged cross-sectional axonometric structural schematic diagram of the fixing mechanism and the inflation mechanism of the utility model;

[0016] Figure 3 It is a top cross-sectional structural diagram of the moving mechanism and the bending mechanism of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the heating mechanism and the bending mechanism of the utility model;

[0018] Figure 5 It is a right-view partial enlarged structural schematic diagram of the detection mechanism of the utility model.

[0019] Markings in the attached drawings: 01, workbench; 02, fixing mechanism; 21, fixing box; 22, rubber strip; 23, cylinder; 24, fixing clamp; 03, moving mechanism; 31, baffle; 32, servo motor 1; 33, reducer 1; 34, transmission shaft; 35, screw; 36, slide plate; 04, heating mechanism; 41, fuel barrel; 42, ignition nozzle; 05, bending mechanism; 51, servo motor 2; 52, reducer; 53, rotating shaft 1; 54, support frame; 55, connecting frame; 56, guide roller; 06, inflation mechanism; 61, air pump; 62, air pipe; 63, connector; 64, sealing ring; 07, detection mechanism; 71, rotating shaft 2; 72, support plate; 73, liquid storage tank; 74, liquid infusion pipe; 75, sprinkler head; 76, valve. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] The utility model discloses a heat exchanger shell bending machine, including a workbench 01, the bottom end of the workbench 01 is connected to the ground, and a groove is opened on the workbench 01; it also includes a fixing mechanism 02, a moving mechanism 03, a heating mechanism 04, a bending mechanism 05, an inflation mechanism 06 and a detection mechanism 07, the fixing mechanism 02 is installed on the workbench 01 and fixes one end of the steel pipe, the moving mechanism 03 is installed on the workbench 01 and is convenient for adjusting different bending lengths, the heating mechanism 04 is installed on the moving mechanism 03 and heats the bending part, the bending mechanism 05 is installed on the moving mechanism 03 and drives the steel pipe to bend, and the inflation mechanism 06 and the detection mechanism 07 are arranged on the workbench 01. Mechanism 06 is installed on the fixing mechanism 02 and inflates the steel pipe. The detection mechanism 07 is installed on the workbench 01 and quenches the steel pipe at the bending part and checks whether the bending part is leaking. The fixing mechanism 02 includes a fixing box 21, a rubber strip 22, two groups of cylinders 23 and two groups of fixing clamps 24. The bottom end of the fixing box 21 is connected to the top end of the workbench 01. The interior of the fixing box 21 is provided with a cavity. The front end of the fixing box 21 is provided with a fixing hole. The rubber strip 22 is installed at the fixing hole of the fixing box 21. The two groups of cylinders 23 are relatively installed in the cavity of the fixing box 21. The two groups of fixing clamps 24 are respectively installed on the two groups of cylinders 23. ; The moving mechanism 03 includes two sets of baffles 31, a servo motor 32, two sets of reducers 33, a transmission shaft 34, two sets of lead screws 35 and a slide plate 36. The two sets of baffles 31 are installed on the workbench 01, the servo motor 32 and the two sets of reducers 33 are installed on the same set of baffles 31, the transmission shaft 34 is rotatably installed between the two sets of reducers 33, the two sets of lead screws 35 are rotatably installed between the two sets of baffles 31 and are respectively longitudinally connected to the two sets of reducers 33, and the slide plate 36 is slidably installed on the two sets of lead screws 35; the heating mechanism 04 includes a fuel barrel 41 and an ignition nozzle 42. The fuel barrel 41 The bottom end is connected to the top of the slide plate 36, and the bottom end of the ignition nozzle 42 is connected to the top of the fuel barrel 41; the bending mechanism 05 includes a servo motor 2 51, a reducer 52, a rotating shaft 1 53, a support frame 54, a connecting frame 55 and a guide roller 56. The bottom end of the servo motor 2 51 is connected to the top of the slide plate 36, the bottom end of the reducer 52 is connected to the top of the slide plate 36, the rotating shaft 1 53 is rotatably mounted on the reducer 52, the bottom end of the support frame 54 is connected to the top of the slide plate 36 and supports the rotating shaft 1 53, the connecting frame 55 is installed on the rotating shaft 1 53, and the guide roller 56 is rotatably mounted on the connecting frame 55;When it is working, the staff first inserts the steel pipe into the cavity of the fixed box 21, and sets the rubber strip 22 to prevent the friction between the steel pipe and the fixed box 21, so as to ensure the quality of the finished product, and then starts the two groups of cylinders 23, and the two groups of cylinders 23 push the two groups of fixing clamps 24 to clamp the steel pipe, and according to the required bending position, starts the servo motor 32, and the servo motor 32 drives the reducer 33 connected thereto to work, and the reducer 33 drives another group of reducers 33 to work through the transmission shaft 34, and the two groups of reducers 33 drive the two groups of lead screws 35 to rotate, and the two groups of lead screws 35 drive the slide plate 36 to move, which is convenient for the heating mechanism 0 4 and the bending mechanism 05 move to the position where the steel pipe needs to be bent, the staff adds fuel to the fuel barrel 41, ignites the ignition nozzle 42, and the ignition nozzle 42 sprays flames to heat the bending part of the steel pipe, preheating the steel pipe to reduce its hardness and improve its plasticity, which helps to reduce stress and rebound during the bending process, and starts the servo motor 2 51. The servo motor 2 51 drives the rotating shaft 1 53 to rotate through the reducer 52. The stability of the rotating shaft 1 53 is enhanced by setting the support frame 54. The rotating shaft 1 53 drives the support frame 54 and the connecting frame 55 to rotate 180 degrees, and the guide roller 56 squeezes and bends the steel pipe. ;

[0023] Example 2

[0024] like Figures 1 to 5As shown, a heat exchanger shell bending machine of the utility model is based on Example 1; the inflation mechanism 06 includes an air pump 61, an air pipe 62, a connector 63 and a sealing ring 64, the air pump 61 is installed on the workbench 01, the air pipe 62 is installed on the air pump 61, the connector 63 is installed in the cavity of the fixed box 21 and is connected to the inside of the air pipe 62, and the sealing ring 64 is installed on the connector 63; the detection mechanism 07 includes a rotating shaft 71, a support plate 72, a liquid storage tank 73, a liquid delivery tube 74, a spray head 75 and a valve 76, the bottom end of the rotating shaft 71 is rotatably installed on the top of the workbench 01, the support plate 72 is installed on the rotating shaft 71, the bottom end of the liquid storage tank 73 and the top end of the support plate 72 The infusion tube 74 is installed on the liquid storage box 73 and communicated with the inside of the liquid storage box 73, the spray head 75 is installed at the bottom end of the support plate 72 and communicated with the inside of the infusion tube 74, and the valve 76 is installed on the infusion tube 74; when it is working, the staff first inserts the steel pipe into the cavity of the fixed box 21, and prevents the steel pipe and the fixed box 21 from rubbing by setting the rubber strip 22 to ensure the quality of the finished product, and then starts the two groups of cylinders 23, the two groups of cylinders 23 push the two groups of fixed clamps 24 to clamp the steel pipe, and according to the bending position required, start the servo motor 32, the servo motor 32 drives the reducer 33 connected to it to work, and the reducer 33 drives another group of reducer 33 to work through the transmission shaft 34 , two groups of reducers 33 drive two groups of lead screws 35 to rotate, and the two groups of lead screws 35 drive the slide plate 36 to move, so that the heating mechanism 04 and the bending mechanism 05 can move to the position where the steel pipe needs to be bent. The staff adds fuel to the fuel barrel 41 and ignites the ignition nozzle 42. The ignition nozzle 42 sprays flames to heat the bending part of the steel pipe, and preheats the steel pipe to reduce its hardness and improve its plasticity, which helps to reduce stress and rebound during the bending process. The servo motor 51 is started. The servo motor 51 drives the shaft 53 to rotate through the reducer 52. The stability of the shaft 53 is enhanced by setting the support frame 54. The shaft 53 drives the support frame 54 and the connecting frame 55 to rotate 180 degrees. The guide roller 56 squeezes and bends the steel pipe, and one end of the steel pipe is inserted into the connector 63. When the steel pipe is bent, the air pump 61 is started, the air pump 61 draws air and transmits it to the connector 63 through the air pipe 62. The connector 63 transmits air to the steel pipe. The sealing ring 64 can prevent air leakage at the connection. After the steel pipe is bent, the staff rotates the rotating shaft 71 to make the spray head 75 located above the bending part of the steel pipe, opens the valve 76, and the soapy water in the liquid storage tank 73 is transmitted to the spray head 75 through the infusion pipe 74. The spray head 75 sprays the soapy water onto the bending part of the steel pipe to quench the steel pipe and reduce the temperature of the steel pipe. At the same time, the staff can observe whether there are bubbles on the surface to determine whether it is leaking.

[0025] The servo motor 32, reducer 33, servo motor 51 and reducer 52 of the utility model are purchased on the market. The technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for the technicians in this field to make creative efforts.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heat exchanger shell bending machine, comprising a workbench (01), the bottom end of the workbench (01) is connected to the ground, and a groove is formed on the workbench (01); characterized in that: The invention also comprises a fixing mechanism (02), a moving mechanism (03), a heating mechanism (04), a bending mechanism (05), an inflating mechanism (06) and a detecting mechanism (07). The fixing mechanism (02) is installed on the workbench (01) and fixes one end of the steel pipe. The moving mechanism (03) is installed on the workbench (01) and is convenient for adjusting different bending lengths. The heating mechanism (04) is installed on the moving mechanism (03) and heats the bending part. The bending mechanism (05) is installed on the moving mechanism (03) and drives the steel pipe to bend. The inflating mechanism (06) is installed on the fixing mechanism (02) and inflates the steel pipe. The detecting mechanism (07) is installed on the workbench (01) and quenches the bending part of the steel pipe and checks whether the bending part is leaking.

2. A heat exchanger shell bending machine according to claim 1, characterized in that: The fixing mechanism (02) comprises a fixing box (21), a rubber strip (22), two groups of cylinders (23) and two groups of fixing clamps (24). The bottom end of the fixing box (21) is connected to the top end of the workbench (01). A cavity is arranged inside the fixing box (21). A fixing hole is opened at the front end of the fixing box (21). The rubber strip (22) is installed at the fixing hole of the fixing box (21). The two groups of cylinders (23) are relatively installed in the cavity of the fixing box (21). The two groups of fixing clamps (24) are respectively installed on the two groups of cylinders (23).

3. A heat exchanger shell bending machine according to claim 1, characterized in that: The moving mechanism (03) comprises two groups of baffles (31), a servo motor (32), two groups of reducers (33), a transmission shaft (34), two groups of lead screws (35) and a slide plate (36). The two groups of baffles (31) are both mounted on the workbench (01), the servo motor (32) and the two groups of reducers (33) are both mounted on the same group of baffles (31), the transmission shaft (34) is rotatably mounted between the two groups of reducers (33), the two groups of lead screws (35) are both rotatably mounted between the two groups of baffles (31) and are respectively longitudinally connected to the two groups of reducers (33), and the slide plate (36) is slidably mounted on the two groups of lead screws (35).

4. A heat exchanger shell bending machine according to claim 3, characterized in that: The heating mechanism (04) comprises a fuel barrel (41) and an ignition nozzle (42), wherein the bottom end of the fuel barrel (41) is connected to the top end of the slide plate (36), and the bottom end of the ignition nozzle (42) is connected to the top end of the fuel barrel (41).

5. A heat exchanger shell bending machine as claimed in claim 3, characterized in that: The bending mechanism (05) comprises a servo motor 2 (51), a speed reducer (52), a rotating shaft 1 (53), a support frame (54), a connecting frame (55) and a guide roller (56). The bottom end of the servo motor 2 (51) is connected to the top end of the slide plate (36), the bottom end of the speed reducer (52) is connected to the top end of the slide plate (36), the rotating shaft 1 (53) is rotatably mounted on the speed reducer (52), the bottom end of the support frame (54) is connected to the top end of the slide plate (36) and supports the rotating shaft 1 (53), the connecting frame (55) is mounted on the rotating shaft 1 (53), and the guide roller (56) is rotatably mounted on the connecting frame (55).

6. A heat exchanger shell bending machine according to claim 2, characterized in that: The inflation mechanism (06) comprises an air pump (61), an air delivery pipe (62), a connector (63) and a sealing ring (64); the air pump (61) is mounted on the workbench (01); the air delivery pipe (62) is mounted on the air pump (61); the connector (63) is mounted in the cavity of the fixed box (21) and communicated with the inside of the air delivery pipe (62); and the sealing ring (64) is mounted on the connector (63).

7. A heat exchanger shell bending machine according to claim 1, characterized in that: The detection mechanism (07) comprises a second rotating shaft (71), a support plate (72), a liquid storage tank (73), a liquid infusion tube (74), a spray head (75) and a valve (76); the bottom end of the second rotating shaft (71) is rotatably mounted on the top end of the workbench (01); the support plate (72) is mounted on the second rotating shaft (71); the bottom end of the liquid storage tank (73) is connected to the top end of the support plate (72); the liquid infusion tube (74) is mounted on the liquid storage tank (73) and communicated with the inside of the liquid storage tank (73); the spray head (75) is mounted on the bottom end of the support plate (72) and communicated with the inside of the liquid infusion tube (74); and the valve (76) is mounted on the liquid infusion tube (74).

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