All-welded plate heat exchanger

Abstract

The invention discloses an all-welded plate heat exchanger, and relates to the technical field of plate heat exchangers, the all-welded plate heat exchanger comprises a heat exchanger body, the heat exchanger body is assembled in a welding mode, one side of the heat exchanger body is provided with a water inlet and a water outlet, the other side of the heat exchanger body is provided with an oil inlet and an oil outlet, and the heat exchanger body communicates with a water inlet pipe through the water inlet; a stirring mechanism is arranged in the water inlet pipe and configured to disturb water flow, the water inlet pipe is connected with a liquid inlet mechanism, an adjusting mechanism is arranged on the inner wall of the water inlet pipe, and the stirring mechanism drives the liquid inlet mechanism to intermittently add the scale inhibitor into the water flow through the adjusting mechanism. The rotating shaft can be driven to rotate in the rotating process of the fan blades, the rotating shaft drives the rotating rod to rotate, the rotating rod can discontinuously stir the two stirring blocks, the two stirring blocks can move towards the spring direction, the stirring blocks drive the sliding plate to compress the spring along the sliding cavity, and the sliding plate can drive the pressing plate to move; and the scale inhibitor is conveyed into the water flow to generate a scaling inhibition effect.

Description

Technical Field

[0001] The invention relates to the technical field of plate heat exchangers, and in particular to a fully welded plate heat exchanger. Background Art

[0002] Plate heat exchangers have been around for more than 100 years and have the characteristics of high heat transfer coefficient, easy maintenance, and small footprint. Plate heat exchangers are a type of high-efficiency heat exchanger that is made up of a series of corrugated metal sheets stacked together. Thin rectangular channels are formed between the various plates, and heat is exchanged through the plates.

[0003] However, the above technology often has the following defects: in the prior art, scale will appear in the plate heat exchanger after the water enters the heat exchanger and is heated up, especially if the water is hard, the probability of scale appearing in the heat exchanger will increase. Once there is too much scale, the heat exchange efficiency of the heat exchanger will be reduced. Summary of the invention

[0004] Technical issues solved:

[0005] In view of the shortcomings of the prior art, the present invention provides a fully welded plate heat exchanger to solve the problem in the prior art proposed in the above background technology that scale will appear in the plate heat exchanger after water enters the heat exchanger and is heated up, especially if the water is hard, the probability of scale appearing in the heat exchanger will increase. Once there is too much scale, the heat exchange efficiency of the heat exchanger will be reduced.

[0006] Technical solution:

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A fully welded plate heat exchanger comprises a heat exchanger body, which is assembled by welding and is provided with a water inlet and a water outlet on one side and an oil inlet and an oil outlet on the other side. The heat exchanger body is connected to a water inlet pipe through the water inlet, a stirring mechanism is provided inside the water inlet pipe, and the stirring mechanism is configured to disturb the water flow. The water inlet pipe is connected to a liquid inlet mechanism, and an adjusting mechanism is provided on the inner wall of the water inlet pipe. The stirring mechanism drives the liquid inlet mechanism to intermittently add scale inhibitor to the water flow through the adjusting mechanism.

[0009] In one possible implementation, the stirring mechanism includes a plurality of support frames evenly fixed on the inner wall of the water inlet pipe, and the plurality of support frames are fixedly connected to bearings. The bearings are located on the central axis of the water inlet pipe, and a rotating shaft is rotatably connected inside the bearings. A fixing ring is disposed outside the rotating shaft, and a plurality of fan blades are evenly fixedly connected to the outer wall of the fixing ring, and the length of the fan blades is smaller than the radius of the water inlet pipe.

[0010] In a possible implementation, the lower wall of the water inlet pipe is fixedly connected to a connecting block, the free end of the connecting block is fixedly connected to a liquid storage tank, the liquid storage tank carries a scale inhibitor, the liquid storage tank is connected to the water inlet pipe through two conduits, a guide bar is provided in the conduit, one end of the guide bar extends to the bottom of the liquid storage tank, and the other end is fixedly connected to an elastic head installed on the inner wall of the water inlet pipe, and a plurality of shrinkage holes are opened on the outer wall of the elastic head.

[0011] In one possible implementation, the adjustment mechanism includes two outer shells fixedly mounted on the inner wall of the water inlet pipe, an inner cavity for accommodating an elastic head is provided in the outer shell, a sliding plate is slidably connected to the outer shell, the sliding plate is used to control the connection between the inner cavity and the water inlet pipe, a sliding cavity is provided on the outer shell for the sliding plate to slide, and a spring is provided between the sliding plate and the inner wall of the sliding cavity.

[0012] In a possible implementation, a shift block is provided on the surface of the sliding plate outside the shell, and a rotating rod is fixedly connected to the outer wall of the fixing ring. The length of the rotating rod is smaller than the radius of the water inlet pipe, and the rotating rod intermittently shifts the shift block toward the spring direction.

[0013] In a possible implementation, a pressure plate is provided on the surface of the sliding plate located inside the shell, a support is fixedly provided on the inner wall of the shell, and the support is rotatably connected to an adjustment rod with a V-shaped structure. When the sliding plate slides along the sliding cavity, the pressure plate pushes one side of the adjustment rod, and the other side of the adjustment rod squeezes the elastic head.

[0014] In a possible implementation, an upper fixing plate is disposed outside the oil inlet, and a lower fixing plate is disposed outside the oil outlet.

[0015] In a possible implementation, the elastic head and the guide bar are both made of water-absorbing material.

[0016] Beneficial effects:

[0017] In the present invention, when water flows in the water inlet pipe, it will push the fan blades to rotate. The rotating fan blades can form a spiral water flow, disturb the water flow, and then increase the turbulence effect when the water flows into the heat exchanger body, thereby improving the heat exchange efficiency; the length of the fan blades is smaller than the radius of the water inlet pipe, so the fan blades can rotate freely in the water inlet pipe.

[0018] In the present invention, under normal circumstances, the scale inhibitor transported through the guide bar will be stored in the elastic head. When the elastic head is squeezed, the shrinkage hole will open, and the scale inhibitor in the elastic head will be discharged through the opened shrinkage hole.

[0019] In the present invention, the fan blades can drive the rotating shaft to rotate during rotation, and the rotating shaft drives the rotating rod to rotate. The rotating rod can intermittently push the two push blocks, and the two push blocks will move in the direction of the spring. The push blocks drive the sliding plate to compress the spring along the sliding cavity, and the sliding plate will drive the pressure plate to move until the scale inhibitor is transported to the water flow to inhibit scaling; when the rotating rod is separated from the push block, the spring will drive the sliding plate to move in the opposite direction, driving the sliding plate, the push block and the pressure plate to return to their initial positions until the rotating rod pushes the push block again next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present invention from another viewing angle;

[0022] Figure 3 Schematic diagram of the internal structure of the water inlet pipe in the present invention;

[0023] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0024] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0025] Legend: 1. Heat exchanger body; 11. Water inlet; 12. Water outlet; 13. Oil inlet; 14. Oil outlet; 2. Upper fixed plate; 3. Lower fixed plate; 4. Water inlet pipe; 5. Agitation mechanism; 51. Support frame; 52. Bearing; 53. Rotating shaft; 54. Fixed ring; 55. Fan blade; 56. Rotating rod; 6. Liquid inlet mechanism; 61. Connecting block; 62. Liquid storage tank; 63. Conduit; 64. Elastic head; 7. Adjustment mechanism; 71. Shell; 72. Inner cavity; 73. Sliding plate; 74. Sliding cavity; 75. Dial block; 76. Pressure plate; 77. Support; 78. Adjustment rod; 79. Spring. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0027] A fully welded plate heat exchanger, see Figure 1-Figure 5, including a heat exchanger body 1, which is assembled by welding, and is provided with a water inlet 11 and a water outlet 12 on one side, and an oil inlet 13 and an oil outlet 14 on the other side, an upper fixing plate 2 is provided outside the oil inlet 13, and a lower fixing plate 3 is provided outside the oil outlet 14; the effects achieved by the above components are: the heat exchanger body 1 can be fixed by the upper fixing plate 2 and the lower fixing plate 3; the water inlet 11 and the water outlet 12 are used for water intake and drainage into the heat exchanger body 1 respectively; the oil inlet 13 and the oil outlet 14 are used for oil intake and oil outlet into the heat exchanger body 1 respectively.

[0028] As shown in the figure, in this embodiment: the heat exchanger body 1 is connected to the water inlet pipe 4 through the water inlet 11, and a stirring mechanism 5 is arranged inside the water inlet pipe 4. The stirring mechanism 5 is configured to disturb the water flow. The stirring mechanism 5 includes a plurality of support frames 51 uniformly fixed on the inner wall of the water inlet pipe 4, and the plurality of support frames 51 are fixedly connected with bearings 52. The bearing 52 is located on the central axis of the water inlet pipe 4. A rotating shaft 53 is rotatably connected inside the bearing 52. A fixing ring 54 is arranged on the outer sleeve of the rotating shaft 53. A plurality of fan blades 55 are uniformly fixedly connected to the outer wall of the fixing ring 54. The length of the fan blades 55 is less than the radius of the water inlet pipe 4. The above components The effect achieved is: the water inlet 11 is used to let water into the heat exchanger body 1; a plurality of support frames 51 and bearings 52 can be used to support the rotating shaft 53, and the rotating shaft 53 can rotate along the bearing 52 on the central axis of the water inlet pipe 4; when the water flows in the water inlet pipe 4, it will push the fan blades 55 to rotate, and the rotating fan blades 55 can form a spiral water flow to disturb the water flow, so that when the water flows into the inside of the heat exchanger body 1, the turbulence effect can be increased, thereby improving the heat exchange efficiency; the length of the fan blade 55 is smaller than the radius of the water inlet pipe 4, so the fan blade 55 can rotate freely in the water inlet pipe 4.

[0029] As shown in the figure, in this embodiment: the water inlet pipe 4 is connected to the liquid inlet mechanism 6, the lower wall of the water inlet pipe 4 is fixedly connected to the connecting block 61, the free end of the connecting block 61 is fixedly connected to the liquid storage tank 62, the liquid storage tank 62 carries the scale inhibitor, the liquid storage tank 62 is connected to the water inlet pipe 4 through two conduits 63, the conduit 63 is provided with a guide bar, one end of the guide bar extends to the bottom of the liquid storage tank 62, and the other end is fixedly connected to the elastic head 64 installed on the inner wall of the water inlet pipe 4, the outer wall of the elastic head 64 is provided with a plurality of shrinkage holes, and the elastic head 64 and the guide bar are made of a water-absorbing material. Made of; the effects achieved by the above components are: the guide bar can transport the scale inhibitor in the liquid storage tank 62 to the elastic head 64, the conduit 63 is used to carry the guide bar, and can ensure that the scale inhibitor is smoothly transported by the guide bar without loss; under normal circumstances, the scale inhibitor transported by the guide bar will be stored in the elastic head 64, when the elastic head 64 is squeezed, the contraction hole will open, and the scale inhibitor in the elastic head 64 will be discharged through the opened contraction hole; the elastic head 64 and the guide bar are both made of water-absorbing material, which can increase the absorption capacity of the scale inhibitor.

[0030] As shown in the figure, in this embodiment: an adjusting mechanism 7 is provided on the inner wall of the water inlet pipe 4, and the adjusting mechanism 7 includes two outer shells 71 fixedly installed on the inner wall of the water inlet pipe 4, an inner cavity 72 for accommodating the elastic head 64 is provided in the outer shell 71, a sliding plate 73 is slidably connected to the outer shell 71, and the sliding plate 73 is used to control the connection between the inner cavity 72 and the water inlet pipe 4, and a sliding cavity 74 for sliding the sliding plate 73 is provided on the outer shell 71, and a spring 79 is provided between the sliding plate 73 and the inner wall of the sliding cavity 74; the effects achieved by the above components are: the sliding plate 73 is used to separate the inner cavity 72 from the water inlet pipe 4, and the elastic head 64 is located in the inner cavity 72, so that the sliding plate 73 can block the elastic head 64 from transporting the scale inhibitor into the water inlet pipe 4; the sliding plate 73 can compress the spring 79 along the sliding cavity 74, and the spring 79 can also push the sliding plate 73 to return to its initial position.

[0031] As shown in the figure, in this embodiment: the surface of the sliding plate 73 located inside the shell 71 is provided with a pressure plate 76, the inner wall of the shell 71 is fixedly provided with a support 77, the support 77 is rotatably connected to the adjustment rod 78 of the V-shaped structure, and the sliding plate 73 pushes one side of the adjustment rod 78 through the pressure plate 76 during the sliding process along the sliding cavity 74, and the other side of the adjustment rod 78 squeezes the elastic head 64; the effect achieved by the above components is: when the sliding plate 73 compresses the spring 79 along the sliding cavity 74, it drives the pressure plate 76 to move, and the pressure plate 76 will push one side of the adjustment rod 78. Due to the rotation of the adjustment rod 78 The support 77 is movably connected to the support 77, so that the other side of the adjusting rod 78 will squeeze the elastic head 64, and the shrinkage hole on the elastic head 64 will open. The elastic head 64 will be compressed to discharge the internal scale inhibitor through the opened shrinkage hole. The scale inhibitor will enter the water flow to inhibit scaling and reduce the generation of scale inside the heat exchanger body 1. The support 77 is used to support the adjusting rod 78, so that when one side of the adjusting rod 78 is compressed, the other side can squeeze the elastic head 64; when the pressure plate 76 leaves one side of the adjusting rod 78, the elastic head 64 can also return to its initial state and close the shrinkage hole.

[0032] As shown in the figure, in this embodiment: the stirring mechanism 5 drives the liquid inlet mechanism 6 to intermittently add scale inhibitor to the water flow through the adjustment mechanism 7, the sliding plate 73 is located on the surface of the outer shell 71 and is provided with a dial block 75, the outer wall of the fixed ring 54 is also fixedly connected with a rotating rod 56, the length of the rotating rod 56 is less than the radius of the water inlet pipe 4, and the rotating rod 56 intermittently drives the dial block 75 to move in the direction of the spring 79; the effect achieved by the above components is: the fan blade 55 can drive the rotating shaft 53 to rotate during the rotation, the rotating shaft 53 drives the rotating rod 56 to rotate, and the rotating rod 56 can intermittently move the two shift blocks 75, and the two shift blocks 75 will move in the direction of the spring 79. The shift blocks 75 drive the sliding plate 73 to compress the spring 79 along the sliding cavity 74, and the sliding plate 73 will drive the pressure plate 76 to move until the scale inhibitor is transported to the water flow to inhibit scaling; when the rotating rod 56 is separated from the shift block 75, the spring 79 will drive the sliding plate 73 to move in the opposite direction, and drive the sliding plate 73, the shift block 75 and the pressure plate 76 to return to the initial position until the rotating rod 56 moves the shift block 75 again next time.

[0033] The specific working process is as follows: when the water flows in the water inlet pipe 4, the fan blades 55 are driven to rotate. The rotating fan blades 55 can form a spiral water flow, disturbing the water flow, and then the turbulence effect can be increased when the water flows into the heat exchanger body 1, thereby improving the heat exchange efficiency; the rotation of the fan blades 55 drives the rotating shaft 53 to rotate, and the rotating shaft 53 drives the rotating rod 56 to rotate. The rotating rod 56 intermittently shifts the two shifting blocks 75, and the two shifting blocks 75 move in the direction of the spring 79. The shifting blocks 75 drive the sliding plate 73 to compress the spring 79 along the sliding cavity 74, and the sliding plate 73 drives the pressure plate 76 to move. The pressure plate 76 will push one side of the adjusting rod 78. The rod 78 is rotatably connected to the support 77, so that the other side of the adjusting rod 78 will squeeze the elastic head 64, and the shrinkage hole on the elastic head 64 will open. The elastic head 64 is compressed and the internal scale inhibitor will be discharged through the opened shrinkage hole. The scale inhibitor enters the water flow and has the effect of inhibiting scaling, thereby reducing the generation of scale inside the heat exchanger body 1; when the rotating rod 56 is separated from the shifting block 75, the spring 79 drives the sliding plate 73 to move in the opposite direction, and drives the sliding plate 73, the shifting block 75 and the pressure plate 76 to return to the initial position until the rotating rod 56 shifts the shifting block 75 again next time, and at the same time, the elastic head 64 can also return to the initial state and close the shrinkage hole.

[0034] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A fully welded plate heat exchanger, comprising a heat exchanger body (1), characterized in that: The heat exchanger body (1) is assembled by welding, and is provided with a water inlet (11) and a water outlet (12) on one side, and an oil inlet (13) and an oil outlet (14) on the other side. The heat exchanger body (1) is connected to a water inlet pipe (4) through the water inlet (11). A stirring mechanism (5) is provided inside the water inlet pipe (4). The stirring mechanism (5) is configured to disturb the water flow. The water inlet pipe (4) is connected to a liquid inlet mechanism (6). An adjusting mechanism (7) is provided on the inner wall of the water inlet pipe (4). The stirring mechanism (5) drives the liquid inlet mechanism (6) through the adjusting mechanism (7) to intermittently add a scale inhibitor to the water flow.

2. A fully welded plate heat exchanger according to claim 1, characterized in that: The stirring mechanism (5) comprises a plurality of support frames (51) uniformly fixed on the inner wall of the water inlet pipe (4), the plurality of support frames (51) being fixedly connected to bearings (52), the bearings (52) being located on the central axis of the water inlet pipe (4), a rotating shaft (53) being rotatably connected inside the bearings (52), a fixing ring (54) being disposed on the outer sleeve of the rotating shaft (53), a plurality of fan blades (55) being uniformly fixedly connected to the outer wall of the fixing ring (54), the length of the fan blades (55) being smaller than the radius of the water inlet pipe (4).

3. A fully welded plate heat exchanger according to claim 2, characterized in that: The lower wall of the water inlet pipe (4) is fixedly connected to a connecting block (61), the free end of the connecting block (61) is fixedly connected to a liquid storage tank (62), the liquid storage tank (62) carries a scale inhibitor, the liquid storage tank (62) is connected to the water inlet pipe (4) through two conduits (63), a guide bar is provided in the conduit (63), one end of the guide bar extends to the bottom of the liquid storage tank (62), and the other end is fixedly connected to an elastic head (64) installed on the inner wall of the water inlet pipe (4), and the outer wall of the elastic head (64) is provided with a plurality of shrinkage holes.

4. A fully welded plate heat exchanger according to claim 3, characterized in that: The regulating mechanism (7) comprises two outer shells (71) fixedly mounted on the inner wall of the water inlet pipe (4); an inner cavity (72) for accommodating the elastic head (64) is provided in the outer shell (71); a sliding plate (73) is slidably connected to the outer shell (71); the sliding plate (73) is used to control the connection between the inner cavity (72) and the water inlet pipe (4); a sliding cavity (74) for sliding the sliding plate (73); and a spring (79) is provided between the sliding plate (73) and the inner wall of the sliding cavity (74).

5. A fully welded plate heat exchanger according to claim 4, characterized in that: The sliding plate (73) is provided with a shifting block (75) on the surface outside the housing (71), and the outer wall of the fixing ring (54) is also fixedly connected with a rotating rod (56). The length of the rotating rod (56) is smaller than the radius of the water inlet pipe (4), and the rotating rod (56) intermittently shifts the shifting block (75) to move in the direction of the spring (79).

6. A fully welded plate heat exchanger according to claim 5, characterized in that: A pressure plate (76) is provided on the surface of the sliding plate (73) located inside the shell (71); a support (77) is fixedly provided on the inner wall of the shell (71); the support (77) is rotatably connected to an adjustment rod (78) with a V-shaped structure; when the sliding plate (73) slides along the sliding cavity (74), the pressure plate (76) pushes one side of the adjustment rod (78), and the other side of the adjustment rod (78) squeezes the elastic head (64).

7. A fully welded plate heat exchanger according to claim 6, characterized in that: An upper fixing plate (2) is arranged outside the oil inlet (13), and a lower fixing plate (3) is arranged outside the oil outlet (14).

8. The fully welded plate heat exchanger according to claim 7, characterized in that: The elastic head (64) and the guide bar are both made of water-absorbing material.

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