Rolling device with height adjusting function for plate heat exchanger

Abstract

The utility model discloses a rolling device with a height adjusting function for a plate heat exchanger, which comprises a roller carrier, a rolling device, a movable guide block and a positioning bolt, a threaded hole and a rectangular guide groove are arranged at the top of the roller carrier, and the rolling device is fixed in the guide groove through a bolt. Movable guide blocks are assembled at two ends of the shaft and are in sliding fit with the guide grooves; the positioning bolt penetrates through the threaded hole to abut against the movable guide block, the movable guide block is driven to move axially through screwing, the contact point of a hub of the rolling device and the upper guide rod is driven to change vertically, and therefore the height of the movable pressing plate is accurately adjusted. Machining and assembling errors are compensated through a mechanical linkage structure, the problems of uneven sealing, clamping stagnation of a pressing plate and abrasion of a guide rod in traditional equipment are effectively solved, and the high-pressure and high-temperature plate heat exchanger is suitable for the fields of petrochemical engineering, electric energy and the like.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment technology, specifically a rolling device with height adjustment function for a plate heat exchanger. Background Technology

[0002] The movable pressure plate of the traditional plate heat exchanger is suspended on the upper guide rod by a fixed rolling device. However, due to processing errors, guide rod parallelism deviation and rolling device clearance accumulation, the fitting accuracy between the movable pressure plate and the fixed pressure plate is difficult to meet the high pressure sealing requirements, resulting in the following problems: (1) The pressure plate moves stuck and the disassembly and assembly efficiency is low.

[0003] (2) Uneven contact of sealing surfaces leads to a high risk of local leakage; (3) Increased wear on guide rods and rolling devices shortens equipment life.

[0004] Existing technologies lack height-adjustable rolling mechanisms to compensate for assembly errors. Therefore, a rolling mechanism capable of precisely adjusting the height of the movable pressure plate is needed to improve sealing reliability and equipment lifespan. Utility Model Content

[0005] The purpose of this invention is to provide a rolling device with height adjustment function for plate heat exchangers. The height adjustment function eliminates assembly errors, ensures the fitting accuracy between the movable pressure plate and the fixed pressure plate, and improves sealing performance and mobility.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rolling device with height adjustment function for a plate heat exchanger, including a roller frame with a through threaded hole at the top and a rectangular guide groove at the front; the rolling device is detachably connected to the rectangular guide groove by bolts, and the rolling device includes a shaft, at least one pair of bearings sleeved on the shaft, a spacer tube located between the bearings, a hub with an interference fit to the outer ring of the bearing, and an axial limiting structure of the hub fixed by an elastic retaining ring;

[0007] The two ends of the shaft of the rolling device are equipped with movable guide blocks, which slide in cooperation with the rectangular guide groove of the roller frame;

[0008] A positioning bolt is provided in the threaded hole through the roller frame, the end of which abuts against the movable guide block for adjusting the axial displacement of the movable guide block;

[0009] A movable pressure plate is fixed to the top of the roller frame by welding or bolting, and the movable pressure plate is suspended on the upper guide rod of the plate heat exchanger. By turning the positioning bolt, the moving guide block is driven to move along the rectangular guide groove, which causes the contact position between the hub of the rolling device and the upper guide rod to change, thereby realizing the vertical height adjustment of the movable pressure plate.

[0010] Preferably, the roller frame is a welded steel plate structure, and the width of its rectangular guide groove is in clearance fit with the sliding surface of the moving guide block, with a clearance value of 0.1-0.3mm.

[0011] Preferably, the bearing is a deep groove ball bearing, the axial length of the spacer tube matches the inner ring spacing of the bearing, and both ends of the shaft are locked by nuts and washers.

[0012] Preferably, the movable guide block is a rectangular steel block with sliding bosses on both sides that match the rectangular guide grooves of the roller frame, and the surface of the sliding bosses is coated with a wear-resistant coating.

[0013] Preferably, the end of the positioning bolt is provided with a spherical contact head, which forms a point contact with the abutment surface of the moving guide block to reduce frictional resistance.

[0014] The working process of this utility model is as follows:

[0015] When adjusting the height of the movable pressure plate, tighten the positioning bolt. The spherical contact head at its end pushes the moving guide block to slide axially along the rectangular guide groove of the roller frame. The moving guide block drives the shaft of the rolling device to move synchronously, causing the contact point between the hub and the upper guide rod to change vertically. At this time, the rolling device, supported by the rotation of the bearing, smoothly rises and falls within the roller frame, ultimately driving the movable pressure plate fixed at the top of the roller frame to move vertically, precisely adjusting its fitting height with the fixed pressure plate. After adjustment, the positioning bolt locks the position of the moving guide block, ensuring the movable pressure plate remains stable under high pressure conditions, thereby achieving uniform contact of the sealing surface, reducing wear, and improving disassembly and assembly efficiency.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) This utility model achieves precise adjustment of the vertical height of the movable pressure plate through the mechanical linkage of the positioning bolt and the moving guide block, effectively compensates for processing errors and assembly deviations, ensures uniform contact between the sealing surfaces of the movable pressure plate and the fixed pressure plate, and significantly improves the sealing reliability under high pressure conditions.

[0018] (2) The bearing and hub structure of the rolling device in this utility model are combined with the clearance fit design of the moving guide block, which not only reduces the frictional resistance when the pressure plate moves and improves the disassembly and assembly efficiency, but also maintains the stability of the adjusted position through the locking function of the positioning bolt, thus avoiding the risk of deviation caused by vibration during equipment operation.

[0019] (3) The precise height adjustment function of this utility model can reduce abnormal wear between the movable pressure plate and the guide rod. At the same time, the modular design of the rolling device facilitates the maintenance and replacement of key components (such as bearings and hubs), thereby reducing the overall maintenance cost and extending the service life of the heat exchanger frame. Attached Figure Description

[0020] Figure 1This is a schematic diagram of a heat exchanger;

[0021] Figure 2 This is a schematic diagram of the assembly of the rolling device and the movable pressure plate;

[0022] Figure 3 This is a schematic diagram of the assembly of the rolling device and the roller frame;

[0023] Figure 4 This is a schematic diagram of the rolling device;

[0024] Figure 5 This is a schematic diagram of the roller frame;

[0025] In the diagram: 1-Fixed pressure plate, 2-Upper guide rod, 3-Rolling device, 4-Modible pressure plate, 5-Column, 6-Lower guide rail. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] like Figure 1-5 The roller device for a plate heat exchanger, as shown, includes a roller frame 1 with a through threaded hole 101 at the top and a rectangular guide groove 102 at the front. A roller device 2 is detachably connected to the rectangular guide groove 102 by bolts. The roller device 2 includes a shaft 201, at least one pair of bearings 202 sleeved on the shaft 201, a spacer tube 203 located between the bearings 202, a hub 204 with an interference fit to the outer ring of the bearings 202, and an axial limiting structure for the hub fixed by an elastic retaining ring 205. The shaft 201 of the roller device 2 is equipped with a sliding... The movable guide block 3 slides in conjunction with the rectangular guide groove 102 of the roller frame 1; a positioning bolt 4 is provided in the threaded hole 101 through the roller frame 1, the end of which abuts against the movable guide block 3 for adjusting the axial displacement of the movable guide block 3; a movable pressure plate 5 is fixed to the top of the roller frame 1 by welding or bolting, and the movable pressure plate 5 is suspended on the upper guide rod 6 of the plate heat exchanger; by turning the positioning bolt 4, the movable guide block 3 is driven to move along the rectangular guide groove 102, which drives the contact position between the hub 204 of the rolling device 2 and the upper guide rod 6 to change, thereby realizing the vertical height adjustment of the movable pressure plate 5.

[0028] The roller frame 1 is a welded steel plate structure. The width of its rectangular guide groove 102 is clearance-fitted with the sliding surface of the movable guide block 3, with a clearance value of 0.1-0.3mm. The bearing 202 is a deep groove ball bearing. The axial length of the spacer tube 203 matches the inner ring spacing of the bearing 202. Both ends of the shaft 201 are locked by nuts 206 and washers 207. The movable guide block 3 is a rectangular steel block with sliding bosses 301 on both sides that match the rectangular guide groove 102 of the roller frame 1. The surface of the sliding bosses 301 is coated with a wear-resistant coating. The end of the positioning bolt 4 is provided with a spherical contact head 401, which forms a point contact with the abutment surface of the movable guide block 3 to reduce frictional resistance.

[0029] The working process of this utility model is as follows:

[0030] When the height of the movable pressure plate needs to be adjusted, the positioning bolt 4 is tightened, and the spherical contact head 401 at its end pushes the moving guide block 3 to slide axially along the rectangular guide groove 102 of the roller frame 1. The moving guide block 3 drives the shaft 201 of the rolling device 2 to move synchronously, causing the contact point between the hub 204 and the upper guide rod 6 to change vertically. At this time, the rolling device 2, supported by the rotation of the bearing 202, smoothly rises and falls within the roller frame 1, ultimately driving the movable pressure plate 5, which is fixed at the top of the roller frame, to move vertically and precisely adjust its fitting height with the fixed pressure plate. After adjustment, the positioning bolt 4 locks the position of the moving guide block 3, ensuring that the movable pressure plate 5 remains stable under high pressure conditions, thereby achieving uniform contact of the sealing surface, reducing wear, and improving disassembly and assembly efficiency.

[0031] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of this utility model.

Claims

1. A rolling device with height adjustment function for a plate heat exchanger, characterized in that, include: The roller frame (1) has a through threaded hole (101) at the top and a rectangular guide groove (102) at the front. A rolling device (2) is detachably connected to the rectangular guide groove (102) by bolts. The rolling device (2) includes a shaft (201), at least one pair of bearings (202) sleeved on the shaft (201), a spacer tube (203) located between the bearings (202), a hub (204) that is interference-fitted with the outer ring of the bearing (202), and a hub axial limiting structure fixed by an elastic retaining ring (205). The two ends of the shaft (201) of the rolling device (2) are equipped with movable guide blocks (3), which slide in cooperation with the rectangular guide groove (102) of the roller frame (1); A positioning bolt (4) is provided in the threaded hole (101) through the roller frame (1), the end of which abuts against the moving guide block (3) for adjusting the axial displacement of the moving guide block (3); The top of the roller frame (1) is fixed with a movable pressure plate (5) by welding or bolt connection, and the movable pressure plate (5) is suspended on the upper guide rod (6) of the plate heat exchanger; by turning the positioning bolt (4), the moving guide block (3) is driven to move along the rectangular guide groove (102), which drives the contact position of the wheel hub (204) of the rolling device (2) with the upper guide rod (6) to change, thereby realizing the vertical height adjustment of the movable pressure plate (5).

2. A rolling device with height adjustment function for a plate heat exchanger according to claim 1, characterized in that: The roller frame (1) is a welded steel plate structure. The width of its rectangular guide groove (102) is in clearance fit with the sliding surface of the movable guide block (3), with a clearance value of 0.1-0.3mm.

3. A rolling device with height adjustment function for a plate heat exchanger according to claim 1 or 2, characterized in that: The bearing (202) is a deep groove ball bearing. The axial length of the spacer tube (203) matches the inner ring spacing of the bearing (202). The two ends of the shaft (201) are locked by nuts (206) and washers (207).

4. A rolling device with height adjustment function for a plate heat exchanger according to claim 3, characterized in that: The movable guide block (3) is a rectangular steel block with sliding bosses (301) on both sides that match the rectangular guide grooves (102) of the roller frame (1), and the surface of the sliding bosses (301) is coated with a wear-resistant coating.

5. A rolling device with height adjustment function for a plate heat exchanger according to claim 4, characterized in that: The end of the positioning bolt (4) is provided with a spherical contact head (401) which forms a point contact with the abutment surface of the moving guide block (3) to reduce frictional resistance.

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