A water replenishing mechanism for a new type of secondary heat exchange by phosphating

Abstract

The present invention relates to the field of automotive painting, and particularly to a water replenishing mechanism for a new type of phosphating secondary heat exchange; the water replenishing mechanism for the new type of phosphating secondary heat exchange includes a plate heat exchanger, a connecting frame, a heat dissipation fan blade, a switching and unlocking mechanism, and a driving mechanism. There are upper and lower pipelines connected between two plate heat exchangers. A circulation pump is installed in the middle of the lower pipeline, and an expansion tank is installed on one side of the circulation pump in the lower pipeline. An exhaust valve and a safety valve are respectively installed on the upper pipeline. The connecting frame is installed at the water inlet end of the plate heat exchanger. There are two water inlet holes installed on the inner wall of the connecting frame. A switching column is rotatably connected to the inner wall of the connecting frame. The rotating switching column is connected to one of the water inlet holes. The heat dissipation fan blade is installed on one side of the plate heat exchanger. By directly adding industrial water to the phosphating secondary heat exchange pipeline, the present invention omits the traditional high-level water tank water replenishing link, greatly improving the water replenishing efficiency; this not only shortens the waiting time of the painting production line, but also improves the overall operation efficiency of the production line.

Description

Technical Field

[0001] The present invention relates to the field of automotive painting, and particularly to a water replenishing mechanism for a new type of phosphating secondary heat exchange. Background Art

[0002] In the automotive painting industry, phosphating treatment before painting is one of the key steps to ensure the coating quality and the anti-corrosion performance of the vehicle body; the phosphating solution plays an important role in the pre-treatment electrophoresis station of the painting production line, and its quality and stability directly affect the adhesion of the subsequent coating and the corrosion resistance of the vehicle body; in order to maintain the temperature of the phosphating solution within an appropriate range and avoid fouling and scaling of the plate heat exchanger, heating is usually carried out by means of secondary heat exchange;

[0003] In the traditional phosphating secondary heat exchange water replenishing system, the water replenishing process usually adopts the method of overflow from a high-level water tank; although this solution can meet the basic water replenishing requirements, some problems have emerged in practical applications; firstly, when the high-level water tank replenishes water, it is difficult for the operator to directly observe the water replenishing state, which brings inconvenience to water replenishing control; secondly, the on-site layout of the inlet and return water pipelines of the high-level water tank is often not aesthetically pleasing, affecting the overall layout of the production line; in addition, the manufacturing and installation costs of the high-level water tank and its inlet and return water pipelines are relatively high, increasing the investment cost of the painting production line.

[0004] Therefore, it is necessary to provide a new water replenishing mechanism for a new type of phosphating secondary heat exchange to solve the above technical problems. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a water replenishing mechanism for a new type of phosphating secondary heat exchange.

[0006] The water replenishing mechanism for a new type of phosphating secondary heat exchange provided by the present invention includes: a plate heat exchanger, a connecting frame, heat dissipation fan blades, a switching and unlocking mechanism, and a driving mechanism. There are upper and lower pipelines connected between two plate heat exchangers. A circulation pump is installed in the middle of the lower pipeline, and an expansion tank is installed on one side of the lower pipeline where the circulation pump is located. An exhaust valve and a safety valve are respectively installed on the upper pipeline. The connecting frame is installed at the water inlet end of the plate heat exchanger. There are two water inlet holes installed on the inner wall of the connecting frame. A switching column is rotatably connected to the inner wall of the connecting frame. The rotating switching column is connected to one of the water inlet holes. The heat dissipation fan blades are installed on one side of the plate heat exchanger to dissipate heat from the plate heat exchanger. The switching and unlocking mechanism is installed inside the connecting frame and is cooperatively installed with the switching column. The driving mechanism is installed at the water inlet end of the plate heat exchanger and is used to drive the heat dissipation fan to rotate.

[0007] Preferably, the switching unlocking mechanism includes: a clamping block, a clamping groove, an L-shaped dial post, a dial block, a worm and a worm gear. Placing grooves are symmetrically formed on both sides of the connecting frame. A filter box is slidably connected to the inner wall of the placing groove. The filter box is communicated with the switching column and the connecting frame respectively. A pushing spring is fixedly connected to the water inlet hole of the connecting frame. A groove is formed on the inner wall of the placing groove. A reset spring is fixedly connected to the inner wall of the groove. A clamping block is slidably connected to the inner wall of the groove. One side of the clamping block is fixedly connected to the reset spring. A clamping groove is formed on one side of the filter box. The clamping block is clamped with the clamping groove. An L-shaped dial post is fixedly connected to the side of the clamping block close to the reset spring. Dial blocks are symmetrically and fixedly connected to one side of the switching column. When the switching column rotates by a certain angle, the dial blocks push the L-shaped dial posts, and the clamping block is no longer in contact with the clamping groove. The filter box moves out of the placing groove under the action of the pushing spring. A worm gear is fixedly connected to one side of the switching column. A worm is rotatably connected to the inner wall of the connecting frame. The worm is meshed with the worm gear.

[0008] Preferably, the driving mechanism includes: an impeller and a transmission shaft. An impeller is installed on the inner wall of the water inlet end of the plate heat exchanger. A driving bevel gear is fixedly connected to the axis of the impeller. A transmission shaft is installed between the water inlet end of the plate heat exchanger and the inner wall of the plate heat exchanger. Transmission bevel gears are fixedly connected to both ends of the transmission shaft. A driven bevel gear is fixedly connected to the axis of the heat dissipation fan blade. The two transmission bevel gears are respectively meshed with the driving bevel gear and the driven bevel gear.

[0009] Preferably, pressure gauges and thermometers are respectively installed on the upper and lower pipelines.

[0010] Preferably, the plate heat exchanger is made of corrosion-resistant alloy to improve its durability and stability during the phosphating process. The circulation pump adopts variable frequency control technology to dynamically adjust the flow rate and pressure according to the system requirements.

[0011] Preferably, both the exhaust valve and the safety valve are equipped with remote monitoring and alarm systems to issue alarms in a timely manner in case of abnormalities.

[0012] Preferably, both the pressure gauge and the thermometer are equipped with data recording functions to record the pressure and temperature changes during the operation of the system. The data of the pressure gauge and the thermometer can be sent to the remote monitoring center through wireless transmission to achieve real-time monitoring and data analysis.

[0013] Preferably, the worm is driven by an electric driver to achieve remote control and automatic operation, and each drive drives the worm gear to rotate 180 degrees.

[0014] Compared with the related technologies, the novel phosphating secondary heat exchange water replenishing mechanism provided by the present invention has the following beneficial effects:

[0015] Improve the water replenishment efficiency: By directly adding industrial water to the secondary heat exchange pipeline of phosphating, the traditional water replenishment link of the high-level water tank is omitted, greatly improving the water replenishment efficiency; this not only shortens the waiting time of the painting production line, but also improves the overall operation efficiency of the production line;

[0016] Reduce the manufacturing and installation costs: Since the manufacturing and installation of the high-level water tank and its inlet and return water pipelines are omitted, the manufacturing and installation costs of the present invention are greatly reduced; this not only reduces the initial investment of the enterprise, but also reduces the later maintenance costs;

[0017] Replace the filter box without stopping the machine: Through a unique design, the filter box can be replaced without interrupting the system operation, solving the problem that the traditional water replenishment mechanism needs to stop the machine when replacing the filter box, greatly improving the production efficiency and equipment utilization rate; this technological innovation not only reflects the practicability of the present invention, but also meets the requirements of the patent law for technological innovation. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the water replenishment mechanism for the new type of secondary heat exchange of phosphating provided by the present invention;

[0019] Figure 2 is Figure 1 a schematic structural diagram of the connection frame and the filter box shown in;

[0020] Figure 3 is Figure 1 a schematic structural diagram of the filter box placement groove shown in;

[0021] Figure 4 is Figure 1 a schematic structural diagram of the switching column shown in;

[0022] Figure 5 is Figure 1 a schematic structural diagram of the driving mechanism shown in.

[0023] Reference numerals in the figure: 1, plate heat exchanger; 2, pipeline; 3, circulation pump; 4, expansion tank; 5, exhaust valve; 6, safety valve; 7, connection frame; 8, switching column; 9, heat dissipation fan blade; 10, switching unlocking mechanism; 101, placement groove; 102, filter box; 103, push spring; 104, groove; 105, reset spring; 106, block; 107, card slot; 108, L-shaped dial post; 109, dial post; 1010, worm; 1010, worm gear; 111, impeller; 112, driving bevel gear; 113, transmission shaft; 114, transmission shaft; 115, driven bevel gear. Detailed Embodiment

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0026] Please refer to Figures 1-5 , a water replenishing mechanism for a new type of phosphating secondary heat exchange. The water replenishing mechanism for the new type of phosphating secondary heat exchange includes: a plate heat exchanger 1, a connecting frame 7, a heat dissipation fan blade 9, a switching unlocking mechanism 10 and a driving mechanism 11. There are two upper and lower pipelines 2 connected between the two plate heat exchangers 1. A circulation pump 3 is installed in the middle of the lower pipeline 2. An expansion tank 4 is installed on one side of the lower pipeline 2 where the circulation pump 3 is located. An exhaust valve 5 and a safety valve 6 are respectively installed on the upper pipeline 2. The connecting frame 7 is installed at the water inlet end of the plate heat exchanger 1. There are two water inlet holes installed on the inner wall of the connecting frame 7. A switching column 8 is rotatably connected to the inner wall of the connecting frame 7. Rotating the switching column 8 is connected to one of the water inlet holes. The heat dissipation fan blade 9 is installed on one side of the plate heat exchanger 1 to dissipate heat from the plate heat exchanger 1. The switching unlocking mechanism 10 is installed inside the connecting frame 7 and is cooperatively installed with the switching column 8. The driving mechanism 11 is installed at the water inlet end of the plate heat exchanger 1 and is used to drive the heat dissipation fan 9 to rotate. Pressure gauges and thermometers are respectively installed on the two upper and lower pipelines 2. The material of the plate heat exchanger 1 is corrosion-resistant alloy to improve its durability and stability during the phosphating process. The circulation pump 3 adopts variable frequency control technology to dynamically adjust the flow rate and pressure according to the system requirements. Both the exhaust valve 5 and the safety valve 6 are equipped with remote monitoring and alarm systems to issue alarms in a timely manner in case of abnormalities. Both the pressure gauge and the thermometer are equipped with a data recording function to record the pressure and temperature changes during the operation of the system. The data of the pressure gauge and the thermometer can be sent to the remote monitoring center through wireless transmission to achieve real-time monitoring and data analysis.

[0027] Please refer to Figures 2-4, the switching unlocking mechanism 10 includes: a clamping block 106, a clamping groove 107, an L-shaped dial post 108, a dial block 109, a worm 1010 and a worm gear 1011. Placing grooves 101 are symmetrically formed on both sides of the connecting frame 7. A filter box 102 is slidably connected to the inner wall of the placing groove 101. The filter box 102 is communicated with the switching column 8 and the connecting frame 7 respectively. A pushing spring 103 is fixedly connected to the water inlet hole of the connecting frame 7. A groove 104 is formed on the inner wall of the placing groove 101. A reset spring 105 is fixedly connected to the inner wall of the groove 104. A clamping block 106 is slidably connected to the inner wall of the groove 104. One side of the clamping block 106 is fixedly connected to the reset spring 105. A clamping groove 107 is formed on one side of the filter box 102. The clamping block 106 is clamped with the clamping groove 107. An L-shaped dial post 108 is fixedly connected to the side of the clamping block 106 close to the reset spring 105. Dial blocks 109 are symmetrically fixedly connected to one side of the switching column 8. When the switching column 8 rotates a certain angle, the dial blocks 109 push the L-shaped dial post 108, and the clamping block 106 is no longer in contact with the clamping groove 107. The filter box 102 moves out of the placing groove 101 under the action of the pushing spring 103. A worm gear 1011 is fixedly connected to one side of the switching column 8. A worm 1010 is rotatably connected to the inner wall of the connecting frame 7. The worm 1010 is meshed with the worm gear 1011. The worm 1010 is driven by an electric driver to achieve remote control and automatic operation, and each drive drives the worm gear 1011 to rotate 180 degrees.

[0028] Please refer to Figure 5 , the driving mechanism 11 includes: an impeller 111 and a transmission shaft 113. An impeller 111 is installed on the inner wall of the water inlet end of the plate heat exchanger 1. A driving bevel gear 112 is fixedly connected to the axis of the impeller 111. A transmission shaft 113 is installed between the water inlet end of the plate heat exchanger 1 and the inner wall of the plate heat exchanger 1. Transmission bevel gears 114 are fixedly connected to both ends of the transmission shaft 113. A driven bevel gear 115 is fixedly connected to the axis of the heat dissipation fan blade 9. The two transmission bevel gears 114 are respectively meshed with the driving bevel gear 112 and the driven bevel gear 115.

[0029] The working principle of the water replenishing mechanism for the novel phosphating secondary heat exchange provided by the present invention is as follows:

[0030] Water replenishing process:

[0031] When the water level in the phosphating secondary heat exchange pipeline drops and water replenishment is required, by opening the water replenishing manual valve, industrial water directly flows into the system;

[0032] After the industrial water enters the system, it first passes through the automatic air vent valve 5; the automatic air vent valve 5 can judge whether the water in the pipeline 2 is full and automatically discharge the air in the pipeline 2 to ensure that the system is filled with water and there is no air residue;

[0033] The water continues to flow and passes through the safety valve 6; the safety valve 6 is used to discharge the excess pressure in the pipeline 2 to ensure that the internal pressure of the system is within the safe range;

[0034] Then, the water enters the expansion tank 4; the expansion tank 4 plays a role in buffering the system pressure and preventing water hammer, thereby ensuring the stability of the system operation;

[0035] Cycle process:

[0036] After the vertical circulation pump 3 is started, it drives the water to circulate in the system; the water passes through the plate heat exchanger 1 for heat exchange to reach the temperature required for phosphating;

[0037] The water after heat exchange continues to circulate in the system to meet the needs of the electrophoresis station before the coating production line;

[0038] Sewage and monitoring:

[0039] When the system needs to be discharged, the sewage in the system can be discharged by opening the manual discharge valve;

[0040] The inlet and outlet pressure gauges, inlet and outlet thermometers and pump outlet pressure gauge monitor the system's pressure, temperature, flow and other parameters in real time to ensure that the system is in the best working condition;

[0041] Water inlet switching and filter box 102 replacement:

[0042] Two water inlet holes are installed on the inner wall of the connection frame 7, which are respectively connected to the two filter boxes 102; the switching column 8 rotates in the connection frame 7, and one of the water inlet holes can be selected by rotating the switching column 8, so that the filter box 102 can be replaced without stopping the machine;

[0043] When the filter box 102 needs to be replaced, the unlocking mechanism 10 is switched, such as driving the worm 1010 to rotate, driving the worm wheel 1011 to rotate the switching column 8 to another water inlet hole position;

[0044] During the switching process, the shift block shifts the L-shaped shift column 108 to disengage the block 106 from the slot 107. At this time, the filter box 102 to be replaced is moved out of the placement slot 101 under the action of the push spring 103, and the other filter box 102 automatically enters the working position under the action of gravity and fluid pressure.

[0045] Heat dissipation of plate heat exchanger 1:

[0046] The impeller 111 is driven to rotate by water replenishment, and the active bevel gear 112, the transmission bevel gear and the transmission shaft 114113 and the driven bevel gear 115 are rotated, so that the heat dissipation fan blades 9 rotate, thereby accelerating the flow of air around the plate radiator.

[0047] The above are only embodiments of the present invention, and do not thereby limit the patent scope of the present invention. Any equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A new type of water replenishment mechanism for phosphating secondary heat exchange, characterized in that: include: A plate heat exchanger (1), wherein two upper and lower pipelines (2) are connected between the two plate heat exchangers (1), a circulating pump (3) is installed in the middle of the lower pipeline (2), an expansion tank (4) is installed on one side of the circulating pump (3) in the lower pipeline (2), and an exhaust valve (5) and a safety valve (6) are installed in the upper pipeline (2); A connecting frame (7), the connecting frame (7) being mounted at the water inlet end of the plate heat exchanger (1), two water inlet holes being mounted on the inner wall of the connecting frame (7), a switching column (8) being rotatably connected to the inner wall of the connecting frame (7), and the rotating switching column (8) being connected to one of the water inlet holes; A heat dissipation fan blade (9), the heat dissipation fan blade (9) being mounted on one side of the plate heat exchanger (1) to dissipate heat from the plate heat exchanger (1); A switching unlocking mechanism (10) is installed inside the connection frame (7). The switching unlocking mechanism (10) is installed in cooperation with the switching column (8). The switching unlocking mechanism (10) comprises: a card block (106), a card slot (107), an L-shaped shifting column (108), a shifting block (109), a worm (1010) and a worm wheel (1011). The connection frame (7) is symmetrically provided with placement slots (101) on both sides. The inner wall of the placement slot (101) is slidably connected to a filter box (102). The filter box (102) is respectively connected to the switching column (8) and the connection frame (7). A push-out spring (103) is fixedly connected to the water inlet of the connection frame (7). A groove (104) is provided on the inner wall of the placement slot (101). A reset spring (105) is fixedly connected to the inner wall of the groove (104). The card block (104) is slidably connected to the inner wall of the groove (104). A block (106), one side of the block (106) is fixedly connected to the reset spring (105), one side of the filter box (102) is provided with a slot (107), the block (106) is engaged with the slot (107), a side of the block (106) close to the reset spring (105) is fixedly connected to an L-shaped shifting column (108), one side of the switching column (8) is symmetrically fixedly connected to a shifting block (109), the switching column (8) is rotated by a certain angle, the shifting block (109) shifts the L-shaped shifting column (108), the block (106) and the slot (107) are no longer in contact, the filter box (102) is moved out of the placement slot (101) under the action of the ejection spring (103), one side of the switching column (8) is fixedly connected to a worm gear (1011), the inner wall of the connection frame (7) is rotatably connected to a worm (1010), and the worm gear (1010) is meshingly connected to the worm gear (1011); A driving mechanism (11) is installed at the water inlet end of the plate heat exchanger (1) and is used to drive the heat dissipation fan blades (9) to rotate. The driving mechanism (11) comprises: an impeller (111) and a transmission shaft (113). The impeller (111) is installed on the inner wall of the water inlet end of the plate heat exchanger (1). A driving bevel gear (112) is fixedly connected to the axis of the impeller (111). A transmission shaft (113) is installed between the water inlet end of the plate heat exchanger (1) and the inner wall of the plate heat exchanger (1). Both ends of the transmission shaft (113) are fixedly connected to driving bevel gears (114). A driven bevel gear (115) is fixedly connected to the axis of the heat dissipation fan blades (9). The two driving bevel gears (114) are respectively meshed with the driving bevel gear (112) and the driven bevel gear (115).

2. The novel phosphating secondary heat exchange water replenishment mechanism according to claim 1 is characterized in that: A pressure gauge and a thermometer are installed on the upper and lower pipelines (2) respectively.

3. The novel phosphating secondary heat exchange water replenishment mechanism according to claim 1 is characterized in that: The plate heat exchanger (1) is made of corrosion-resistant alloy, and the circulation pump (3) adopts variable frequency control technology.

4. The novel phosphating secondary heat exchange water replenishment mechanism according to claim 1 is characterized in that: Both the exhaust valve (5) and the safety valve (6) are equipped with remote monitoring and alarm systems.

5. The novel phosphating secondary heat exchange water replenishment mechanism according to claim 1 is characterized in that: Both the pressure gauge and the thermometer are equipped with data recording function, and the data of the pressure gauge and the thermometer can be sent to the remote monitoring center via wireless transmission.

6. The novel phosphating secondary heat exchange water replenishment mechanism according to claim 1 is characterized in that: The worm (1010) is driven by an electric drive to achieve remote control and automated operation, and each drive causes the worm wheel (1011) to rotate 180 degrees.

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