Plate heat exchanger

Abstract

The invention relates to the technical field of heat exchangers, in particular to a plate heat exchanger which comprises a fixed pressing plate, two guide beams are fixed to the fixed pressing plate, a support is arranged on the two guide beams jointly, a movable pressing plate is arranged on the two guide beams in a sliding mode, and a plurality of plate sheets are clamped by the movable pressing plate and the fixed pressing plate jointly. A threaded rod is arranged on the support in a threaded and penetrating mode, a first disc is fixed to one end of the threaded rod, a first connecting frame is fixed to the first disc, a bearing is fixedly arranged on the first connecting frame in a sleeving mode, a cylinder is fixedly arranged on the bearing in a sleeving mode, and a circular ring is fixedly arranged on the cylinder in a sleeving mode. When the plate type heat exchanger is used, disassembled and installed, operation of workers is easy, the using effect of the plate type heat exchanger can be guaranteed, in addition, when the movable pressing plate clamps the multiple plate sheets and moves towards the multiple plate sheets, stress of the movable pressing plate is more uniform, the movable pressing plate cannot be damaged, and the plate type heat exchanger is convenient to use. And the service life of the plate heat exchanger is ensured.

Description

Technical Field

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

[0002] Plate heat exchanger is a kind of high-efficiency heat exchanger made of a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. Figure 1 As shown, the plate heat exchanger includes a fixed pressing plate 1, a bracket 7 and two guide beams 6. The two guide beams 6 are fixed on the fixed pressing plate 1 and detachably mounted on the bracket 7. A movable pressing plate 2 is slidably provided on the two guide beams 6. A plurality of plates 3 are clamped between the movable pressing plate 2, the fixed pressing plate 1 and the two guide beams 6. A plurality of clamping bolts 4 are provided between the movable pressing plate 2 and the fixed pressing plate 1, and a nut 5 is provided on each clamping bolt 4.

[0003] When the existing plate heat exchanger is in use, the multiple plates 3 need to be frequently disassembled and cleaned due to dirt to ensure the heat exchange effect of the plate heat exchanger. Whether it is disassembling or installing, since the multiple nuts 5 need to be matched with the multiple clamping bolts 4 respectively, not only is the operation cumbersome for workers, but it is also easy to cause the nuts 5 to be lost. In addition, since the multiple nuts 5 need to be installed one by one on the multiple clamping bolts 4 to clamp the multiple plates 3, and there is a gasket between two adjacent plates 3, during the installation of the multiple nuts 5 one by one, only the local position of the movable clamping plate 2 can be fixed. This will cause the movable clamping plate 2 to be unable to remain in the same vertical plane when clamping the multiple plates 3, which is easy to increase the friction between the movable clamping plate 2 and other clamping bolts 4, and will also wear the movable clamping plate 2 and other clamping bolts 4, and will increase the gap between the movable clamping plate 2 and the clamping bolts 4. Summary of the invention

[0004] The purpose of the present invention is to solve the disadvantage of the plate heat exchanger in the prior art that the work is complicated during disassembly and installation, and to propose a plate heat exchanger.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A plate heat exchanger is designed, including a fixed pressing plate, two guide beams are fixed on the fixed pressing plate, a bracket is commonly provided on the two guide beams, a movable pressing plate is slidably provided on the two guide beams, the movable pressing plate and the fixed pressing plate jointly clamp a plurality of plates, the bracket is threaded and penetrated by a screw, a first disc is fixed on one end of the screw, a first connecting frame is fixed on the first disc, a bearing is fixedly mounted on the first connecting frame, a cylinder is fixedly mounted on the bearing, a ring is fixedly mounted on the cylinder, and both the ring and the cylinder are in contact with the movable pressing plate.

[0007] Preferably, a hand wheel is fixed on the other end of the screw rod.

[0008] Preferably, a reinforcement mechanism is fixed on the screw rod between the bracket and the first disc.

[0009] Preferably, the reinforcement mechanism comprises a second disc, the second disc is fixedly mounted on the screw rod between the bracket and the first disc, a second connecting frame is fixed on the second disc, and a plurality of rollers are fixed on the second connecting frame.

[0010] Preferably, the plurality of rollers are distributed in a circle with the screw as the center, a circular groove is provided on the ring, and the plurality of rollers are arranged in the groove.

[0011] Preferably, a lubrication mechanism is provided on the bracket.

[0012] Preferably, the lubrication mechanism comprises a cavity, the cavity is arranged inside the bracket, an oil storage tank is penetrated through the bracket, and the oil storage tank is communicated with the cavity.

[0013] Preferably, the cavity is an inverted truncated cone structure.

[0014] Preferably, a push plate is inserted in the oil storage tank, a push rod is fixed on the push plate, one end of the push rod away from the push plate is arranged outside the oil storage tank and fixed with a fixing rod, two fixing blocks are symmetrically fixed on the fixing rod, and both of the fixing blocks are in contact with the bracket.

[0015] The plate heat exchanger proposed by the present invention has the beneficial effect that when the plate heat exchanger is in use, turning the screw rod can change the length of the screw rods on both sides of the bracket, so that the screw rod drives the bearing to rotate together through the first disc and the first connecting frame, and the cylinder and the ring are against the middle of the movable clamping plate. The setting of the bearing can not only adjust the position of the cylinder and the ring, but also prevent the cylinder and the ring from rotating, thereby avoiding large friction damage between the cylinder and the ring and the movable clamping plate. The clamping or loosening of the multiple plates by the movable clamping plate can be completed by controlling the screw rod. During disassembly and installation, the workers can operate simply and can also ensure the use effect of the plate heat exchanger. In addition, when the movable clamping plate clamps the multiple plates, when the movable clamping plate moves toward the multiple plates, the force on the movable clamping plate is more uniform, and the movable clamping plate will not be damaged, thereby ensuring the service life of the plate heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an existing plate heat exchanger;

[0017] Figure 2 A front view of a plate heat exchanger proposed by the present invention;

[0018] Figure 3 A plate heat exchanger proposed by the present invention Figure 1 Right view at center AA;

[0019] Figure 4 A right side view of a plate heat exchanger proposed by the present invention;

[0020] Figure 5 This is a rear view of a screw of a plate heat exchanger proposed by the present invention in a lubricated state.

[0021] In the figure: a fixed pressing plate 1, a movable pressing plate 2, a plate 3, a clamping bolt 4, a nut 5, a guide beam 6, a bracket 7, a screw 8, a first disc 9, a first connecting frame 10, a bearing 11, a cylinder 12, a second disc 13, a second connecting frame 14, a roller 15, a groove 16, a ring 17, a hand wheel 18, a cavity 19, an oil storage tank 20, a push plate 21, a push rod 22, a fixing rod 23, and a fixing block 24. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Example 1

[0024] Reference Figure 2 , 35. A plate heat exchanger comprises a fixed pressing plate 1, on which two guide beams 6 are fixed, on which two guide beams 6 are provided a bracket 7, on which two guide beams 6 are provided a movable pressing plate 2 which is slidably provided, and on which the movable pressing plate 2 and the fixed pressing plate 1 are provided a plurality of plates 3, on which the bracket 7 is threaded and through which a screw 8 is provided, on which one end of the screw 8 a first disc 9 is fixed, on which a first connecting frame 10 is fixed, on which a bearing 11 is fixed in a sleeve, and on which the other end of the screw 8 a hand wheel 18 is fixed, and the hand wheel 18 is turned to drive the screw 8 to rotate on the bracket 7, and because the bracket 7 and the screw 8 are provided with threads, when the screw 8 is freed from external force, the screw 8 will not rotate on the bracket 7, and through the rotation of the screw 8 on the bracket 7, The length of the screw rods 8 on both sides of the bracket 7 can be adjusted, and then the screw rods 8 are used to drive the bearing 11 to rotate through the first disc 9 and the first connecting frame 10. A cylinder 12 is fixed on the bearing 11, and a ring 17 is fixed on the cylinder 12. The ring 17 and the cylinder 12 are both in contact with the movable clamping plate 2. Due to the setting of the bearing 11, the first connecting frame 10 and the cylinder 12 are rotated. When the rotating screw rod 8 drives the first connecting frame 10 and the cylinder 12 to move, the first connecting frame 10 and the cylinder 12 can move in a straight line due to the obstruction of the movable clamping plate 2. When the movable clamping plate 2 is pushed, friction between the movable clamping plate 2 and the cylinder 12 and the ring 17 is avoided, and the surfaces of the clamping plate 2, the cylinder 12 and the ring 17 can be protected.

[0025] A reinforcement mechanism is fixed on the screw rod 8 between the bracket 7 and the first disc 9, and the reinforcement mechanism includes a second disc 13, the second disc 13 is fixed on the screw rod 8 between the bracket 7 and the first disc 9, a second connecting frame 14 is fixed on the second disc 13, and a plurality of rollers 15 are fixed on the second connecting frame 14. The screw rod 8 drives the plurality of rollers 15 to rotate through the second disc 13 and the second connecting frame 14, and the plurality of rollers 15 are distributed in a circle with the screw rod 8 as the center. A circular groove 16 is provided on the ring 17, and the plurality of rollers 15 are all arranged in the groove 16. The groove 16 limits the movement trajectory of the plurality of rollers 15, so that the second disc 13 and the second connecting frame 14 rotate together with the screw rod 8, and the screw rod 8 is also supported, thereby reducing the labor intensity between the screw rod 8 and the first disc 9 when the screw rod 8 is twisted.

[0026] Working principle: When the plate heat exchanger is in use, the worker holds the hand wheel 18 to drive the screw 8 to rotate, so that the screw 8 drives the bearing 11 to rotate together through the first disc 9 and the first connecting frame 10. Turning the screw 8 can change the length of the screw 8 on both sides of the bracket 7, and the cylinder 12 and the ring 17 are against the middle of the movable pressing plate 2. The rotating screw 8 drives the first disc 9 and the first connecting frame 10 to rotate together, and then drives multiple rollers 15 to roll in the groove 16, supporting the screw 8 and reducing the labor intensity between the screw 8 and the first disc 9 when the screw 8 is turned. The setting of the bearing 11 can adjust the cylinder 12 and the ring 17. The positions of the cylinder 12 and the ring 17 can also prevent the cylinder 12 and the ring 17 from rotating, thereby avoiding major friction damage between the cylinder 12 and the ring 17 and the movable clamping plate 2. The movable clamping plate 2 can clamp or loosen the multiple plates 3 only by controlling the screw 8. During disassembly and installation, the workers can operate simply and ensure the use effect of the plate heat exchanger. In addition, when the movable clamping plate 2 clamps the multiple plates 3 and moves toward the multiple plates 3, the force on the movable clamping plate 2 is more uniform, and the movable clamping plate 2 will not be damaged, thereby ensuring the service life of the plate heat exchanger.

[0027] Example 2

[0028] In Example 1, since the screw rod 8 and the bracket 7 are threaded, the contact surfaces between the bracket 7 and the screw rod 8 need to be lubricated during use and maintenance. The basic operation is to directly drip lubricating oil on the screw rod 8, and then when the screw rod 8 is twisted, the lubricating oil can be applied to the contact surfaces between the bracket 7 and the screw rod 8. However, when applying the lubricating oil, the lubricating oil is very easy to drip from the screw rod 8, causing contamination of the guide beam 6 below. When the movable clamping plate 2 is disassembled, the contaminated guide beam 6 will also cause contamination of the movable clamping plate 2. Figure 2 , 4 and 5, as another preferred embodiment of the present invention, which is different from embodiment 1 in that a lubricating mechanism is provided on the bracket 7, and the lubricating mechanism includes a cavity 19, and the cavity 19 is provided inside the bracket 7. An oil storage tank 20 is provided through the bracket 7, and the oil storage tank 20 and the cavity 19 are connected. The cavity 19 is an inverted truncated cone structure, and the inverted truncated cone structure of the cavity 19 can play a certain blocking role on the lubricating oil in the oil storage tank 20. Due to the poor fluidity of the lubricating oil, it can avoid the lubricating oil in the oil storage tank 20 flowing through the cavity 19 to the screw 8 too fast. It will ensure that the lubricating oil on the rotating screw 8 is evenly applied, and it can also avoid the accidental dripping of the lubricating oil from the screw 8 and the bracket 7.

[0029] A push plate 21 is inserted in the oil storage tank 20, and a push rod 22 is fixed on the push plate 21. The end of the push rod 22 away from the push plate 21 is arranged outside the oil storage tank 20 and is fixed with a fixing rod 23. Two fixing blocks 24 are symmetrically fixed on the fixing rod 23. Both fixing blocks 24 are in contact with the bracket 7. The fixing rod 23 can drive the push plate 21 to move in the oil storage tank 20 through the push rod 22, thereby accelerating the discharge of the lubricating oil in the oil storage tank 20 from the cavity 19 to the screw 8.

[0030] Working principle: When in use, when it is necessary to lubricate the contact surfaces between the bracket 7 and the screw 8, pull the fixing rod 23, extract the push plate 21 from the oil storage tank 20, add the lubricating oil to the oil storage tank 20, turn the screw 8, and check the amount of lubricating oil on the screw 8. If it is too little, it means that the speed at which the lubricating oil is discharged from the cavity 19 to the screw 8 is too slow. Insert the push plate 21 into the oil storage tank 20, and accelerate the removal of the lubricating oil in the oil storage tank 20 through the push of the push plate 21. At the same time, turn the screw 8 to evenly apply the lubricating oil to the screw 8, and there will be no excess lubricating oil to contaminate the bracket 7 and the guide beam 6, ensuring the cleanliness of the plate heat exchanger during lubrication, and also avoiding the accumulation of dust on the subsequent oil stains.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plate heat exchanger, comprising a fixed pressing plate (1), two guide beams (6) are fixed on the fixed pressing plate (1), a bracket (7) is commonly provided on the two guide beams (6), a movable pressing plate (2) is slidably provided on the two guide beams (6), the movable pressing plate (2) and the fixed pressing plate (1) jointly clamp a plurality of plates (3), characterized in that: The bracket (7) is threaded and has a screw rod (8) running through it. A first disc (9) is fixed on one end of the screw rod (8). A first connecting frame (10) is fixed on the first disc (9). A bearing (11) is fixedly mounted on the first connecting frame (10). A cylinder (12) is fixedly mounted on the bearing (11). A ring (17) is fixedly mounted on the cylinder (12). Both the ring (17) and the cylinder (12) are in contact with the movable pressing plate (2).

2. The plate heat exchanger according to claim 1, characterized in that: A hand wheel (18) is fixed on the other end of the screw rod (8).

3. The plate heat exchanger according to claim 1, characterized in that: A reinforcement mechanism is fixed on the screw rod (8) between the bracket (7) and the first disc (9).

4. The plate heat exchanger according to claim 3, characterized in that: The reinforcement mechanism comprises a second disc (13), the second disc (13) being fixedly mounted on the screw rod (8) between the bracket (7) and the first disc (9), a second connecting frame (14) being fixed on the second disc (13), and a plurality of rollers (15) being fixed on the second connecting frame (14).

5. The plate heat exchanger according to claim 4, characterized in that: The plurality of rollers (15) are distributed in a circle with the screw rod (8) as the center, a circular groove (16) is provided on the ring (17), and the plurality of rollers (15) are all arranged in the groove (16).

6. The plate heat exchanger according to claim 1, characterized in that: The bracket (7) is provided with a lubrication mechanism.

7. The plate heat exchanger according to claim 6, characterized in that: The lubrication mechanism comprises a cavity (19), wherein the cavity (19) is arranged inside the bracket (7), an oil storage groove (20) is penetrated through the bracket (7), and the oil storage groove (20) is communicated with the cavity (19).

8. The plate heat exchanger according to claim 7, characterized in that: The cavity (19) is an inverted truncated cone structure.

9. The plate heat exchanger according to claim 7, characterized in that: A push plate (21) is inserted into the oil storage tank (20), a push rod (22) is fixed on the push plate (21), one end of the push rod (22) away from the push plate (21) is arranged outside the oil storage tank (20) and is fixed with a fixing rod (23), two fixing blocks (24) are symmetrically fixed on the fixing rod (23), and both of the two fixing blocks (24) are in contact with the bracket (7).

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