Plate heat exchanger convenient to maintain

Abstract

The utility model discloses a plate heat exchanger convenient to maintain, which relates to the technical field of heat exchangers, and comprises a first fixing plate, a second fixing plate, a circular shaft, a bottom beam, heat exchange sheets and a baffle plate, the second fixing plate is provided with a pressing assembly, the pressing assembly comprises a push block pressed against the baffle plate, and the push block is fixedly connected with a screw rod; the screw penetrates through the second fixing plate and then is sleeved with a first gear, the top of the first gear is connected with a second gear in a meshed mode, and a lock catch assembly is arranged on the circular shaft between the baffle and the second fixing plate. The baffle can be pushed by controlling the screw rod to rotate, all the heat exchange pieces are pressed, the operation efficiency is high, the lock catch assembly can be fixed to the needed position on the circular shaft according to needs, and then the separation distance between the heat exchange pieces is flexibly controlled.

Description

Technical Field

[0001] This utility model relates to a plate heat exchanger that is easy to maintain, and belongs to the field of heat exchanger technology. Background Technology

[0002] Plate heat exchangers mainly consist of a series of metal plates that are pressed together to form narrow flow channels. The working fluid and the heat exchange medium (such as water or another fluid) flow separately within these channels, exchanging heat through thermal conduction via the plates. For example, when a hot alumina working fluid flows across one side of the plates, it transfers heat to the cooling medium flowing on the other side, thus lowering the temperature of the working fluid.

[0003] Particulate matter in the alumina working fluid can adhere to the heat exchanger plates, clogging the flow channels. Furthermore, the constant impact and scouring of these particles on the plate walls causes wear, reducing the heat transfer efficiency and necessitating regular cleaning and maintenance. Traditional heat exchangers involve cumbersome plate clamping procedures. This invention aims to improve the clamping structure of plate heat exchangers to facilitate plate replacement and maintenance. Utility Model Content

[0004] This invention provides a plate heat exchanger that is easy to maintain, facilitating regular cleaning and maintenance.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A plate heat exchanger for easy maintenance includes a first fixed plate and a second fixed plate arranged opposite to each other. A circular shaft is connected between the upper parts of the first fixed plate and the second fixed plate, and a bottom beam is connected between the lower parts of the first fixed plate and the second fixed plate. A plurality of heat exchange plates are arranged between the first fixed plate and the second fixed plate. A baffle is provided between the second fixed plate and the outermost heat exchange plate. The top of the heat exchange plate and the baffle is slidably connected to the circular shaft, and the bottom of the heat exchange plate and the baffle is slidably connected to the bottom beam. A pressing assembly is installed on the second fixed plate. The pressing assembly includes a push block that presses against the baffle. A screw is fixedly connected to the push block. The screw freely passes through the second fixed plate and has a gear 1 coaxially sleeved at its end. The gear 1 is rotatably mounted on the second fixed plate and threadedly connected to the screw. A gear 2 is meshed with the top of the gear 1. The gear 2 is fixedly connected to the output shaft of a motor. The motor is mounted on the second fixed plate through a support base.

[0007] A locking assembly is provided on the circular shaft between the baffle and the second fixed plate, and the locking assembly is used to restrict the movement of the baffle toward the second fixed plate.

[0008] Optionally, the locking assembly includes a ring slidably connected to a circular shaft, an annular rubber pad is provided at one end of the ring near the baffle, a through notch is provided on the annular rubber pad, a rotating ring is threaded to the outer side of the ring, and a clamping ring is fixedly connected to the end of the rotating ring near the annular rubber pad, the clamping ring is sleeved on the outer side of the annular rubber pad, and the inner diameter of the clamping ring is smaller than the outer diameter of the annular rubber pad;

[0009] The outer surface of the circular shaft is provided with a groove along its axial direction, and a slider is fixedly connected to the inner wall of the circular ring, the slider being slidably embedded in the groove.

[0010] Optionally, the outer surface of the swivel ring is provided with anti-slip texture.

[0011] The utility model has the following beneficial effects:

[0012] This utility model provides a convenient plate heat exchanger. By controlling the rotation of a screw, a baffle is pushed to press the heat exchange plates together, resulting in high operational efficiency. After the screw retracts, the baffle and heat exchange plates can be separated by a certain distance, facilitating cleaning of the heat exchange plates. Operators can fix the locking assembly to the desired position on the round shaft as needed, thereby flexibly controlling the separation distance between the heat exchange plates. This allows flushing water or a brush to thoroughly clean the heat exchange plates while preventing excessive tilting angles due to excessive distance between the plates. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 A schematic diagram of a plate heat exchanger that is easy to maintain according to this utility model;

[0015] Figure 2 for Figure 1 Partial sectional view;

[0016] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0017] Figure 4 This is a schematic diagram of the locking assembly.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 110. First fixed plate; 120. Second fixed plate; 210. Round shaft; 211. Slide groove; 220. Bottom beam; 300. Heat exchange fin; 400. Baffle; 510. Push block; 520. Screw; 530. Gear 1; 540. Gear 2; 550. Motor; 560. Support base; 610. Ring; 611. Sliding block; 620. Annular rubber pad; 621. Through notch; 630. Rotating ring; 640. Pressing ring. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0021] It should be noted that many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0022] like Figures 1-4 As shown, the convenient plate heat exchanger provided by this utility model includes a first fixed plate 110 and a second fixed plate 120 arranged opposite to each other. A circular shaft 210 is connected between the upper parts of the first fixed plate 110 and the second fixed plate 120, and a bottom beam 220 is connected between the lower parts of the first fixed plate 110 and the second fixed plate 120. A plurality of heat exchange plates 300 are arranged between the first fixed plate 110 and the second fixed plate 120. A baffle 400 is provided between the second fixed plate 120 and the heat exchange plate 300 arranged on the outermost side. The top of the heat exchange plate 300 and the baffle 400 are slidably connected to the circular shaft 210, and the bottom of the heat exchange plate 300 and the baffle 400 are slidably connected to the bottom beam 220. A clamping assembly is installed on the second fixed plate 120.

[0023] Specifically, the clamping assembly includes a push block 510 that presses against the baffle 400. A screw 520 is fixedly connected to the push block 510. The screw 520 freely passes through the second fixed plate 120 and has a gear 530 coaxially sleeved at its end. The gear 530 is rotatably mounted on the second fixed plate 120 and threadedly connected to the screw 520. A gear 540 is meshed with the top of the gear 530. The gear 540 is fixedly connected to the output shaft of the motor. The motor 550 is mounted on the second fixed plate 120 through a support base 560.

[0024] Among them, Figure 3As shown, gear 530 needs to be rotatably connected to the second fixed plate 120. Typically, a fixing sleeve is installed inside the mounting hole of gear 530. The fixing sleeve and gear 530 are connected by a key, and the fixing sleeve is threadedly connected to the screw 520, making gear 530 and the fixing sleeve an integral unit. When gear 530 rotates, it drives the screw 520 to rotate and move along the axis simultaneously via the thread. The length of the fixing sleeve is greater than that of gear 530. An annular boss is provided on the end surface of the fixing sleeve extending beyond gear 530. Two stepped holes with progressively increasing diameters are provided around the through hole of the screw 520 on the second fixed plate 120. The boss extends into the first stepped hole, and a clamping ring 640 is fixed in the second stepped hole by bolts. The inner diameter of the clamping ring 640 is smaller than the diameter of the boss, thus confining the fixing sleeve and gear 530 to the second fixed plate 120.

[0025] When assembling the heat exchanger, the heat exchange plates 300 are arranged between the first fixed plate 110 and the baffle 400. The motor 550 is controlled to rotate forward, driving the screw 520 to move towards the baffle 400, causing the baffle 400 and the heat exchange plates 300 to move towards the first fixed plate 110, thus pressing the heat exchange plates 300 together. Compared to the traditional method of tightening multiple screws sequentially, the plate heat exchanger provided by this invention offers higher installation efficiency due to its ease of maintenance.

[0026] When the heat exchanger 300 needs to be cleaned or disassembled for maintenance, the motor 550 is reversed, driving the screw 520 to retract towards the second fixed plate 120. After the screw 520 retracts, the baffle 400 and the heat exchanger 300 can be separated by a certain distance for cleaning.

[0027] During cleaning, the heat exchange fins 300 need to be spaced at an appropriate distance. The distance between the heat exchange fins 300 should not be too small, otherwise the rinsing water or brush will not be able to fully clean the surface of the heat exchange fins 300. The distance between the heat exchange fins 300 should not be too large either, otherwise the tilt angle of the heat exchange fins 300 will be too large and they may even detach from the shaft 210 and the bottom beam 220.

[0028] In order to facilitate the control of the separation distance between the heat exchange fins 300, this utility model provides a locking assembly on the circular shaft 210 between the baffle 400 and the second fixed plate 120. The locking assembly is used to restrict the movement of the baffle 400 toward the second fixed plate 120.

[0029] In specific operation, the locking assembly is moved toward the first fixed plate 110 and then locked, which controls the distance between the baffle 400 and the first fixed plate 110. After the distance is fixed, the distance that the heat exchange fins 300 can share is also limited.

[0030] like Figure 4As shown, in one specific embodiment, the locking assembly includes a ring 610 slidably connected to a circular shaft 210. An annular rubber pad 620 is provided at one end of the ring 610 near the baffle 400. A through-hole 621 is provided on the annular rubber pad 620. A swivel ring 630 is threadedly connected to the outer side of the ring 610. A clamping ring 640 is fixedly connected to the end of the swivel ring 630 near the annular rubber pad 620. The clamping ring 640 is sleeved on the outer side of the annular rubber pad 620, and its inner diameter is smaller than the outer diameter of the annular rubber pad 620. The annular rubber pad 620 can abut against the end face of the ring 610 or be bonded to the end face of the ring 610.

[0031] A groove 211 is provided on the outer surface of the circular shaft 210 along its axial direction. A slider 611 is fixedly connected to the inner wall of the circular ring 610. The slider 611 is slidably embedded in the groove 211. The function of the slider 611 is to prevent the circular ring 610 from rotating around the circular shaft 210.

[0032] During operation, after moving the locking assembly along the circular shaft 210 to the desired position, to lock the locking assembly, hold the rotating ring 630 and rotate it relative to the circular ring 610. This allows the rotating ring 630 to drive the clamping ring 640 to rotate and move towards the baffle 400. The movement of the clamping ring 640 towards the baffle 400 increases its contact area with the annular rubber pad 620, applying pressure to the annular rubber pad 620 and pressing it between the circular shaft 210 and the clamping ring 640. Thus, the friction between the annular rubber pad 620 and the circular shaft 210 restricts the locking assembly to the desired position on the circular shaft 210.

[0033] To release the locking assembly, simply rotate the rotating ring 630 in the opposite direction to move it away from the annular rubber pad 620.

[0034] The through-hole 621 on the annular rubber pad 620 is designed to allow the annular rubber pad 620 to deform smoothly and fit tightly against the round shaft 210 when subjected to the compressive force of the compression ring 640.

[0035] In a preferred embodiment, the outer surface of the rotating ring 630 is provided with anti-slip texture, which can increase the friction of the rotating ring 630 surface and facilitate the rotation of the rotating ring 630.

[0036] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A plate heat exchanger for easy maintenance, comprising a first fixed plate and a second fixed plate arranged opposite to each other, a circular shaft connecting the upper parts of the first fixed plate and the second fixed plate, a bottom beam connecting the lower parts of the first fixed plate and the second fixed plate, a plurality of heat exchange plates arranged between the first fixed plate and the second fixed plate, a baffle plate being provided between the second fixed plate and the outermost heat exchange plate, the top of the heat exchange plates and the baffle plate being slidably connected to the circular shaft, and the bottom of the heat exchange plates and the baffle plate being slidably connected to the bottom beam, characterized in that... A clamping assembly is installed on the second fixed plate. The clamping assembly includes a push block that presses against the baffle. A screw is fixedly connected to the push block. The screw freely passes through the second fixed plate and a gear is coaxially sleeved at its end. The gear is rotatably mounted on the second fixed plate and threadedly connected to the screw. A gear is meshed with the top of the gear and a second gear is fixedly connected to the output shaft of the motor. The motor is mounted on the second fixed plate through a support base. A locking assembly is provided on the circular shaft between the baffle and the second fixed plate, and the locking assembly is used to restrict the movement of the baffle toward the second fixed plate.

2. The easy-to-maintain plate heat exchanger according to claim 1, characterized in that, The locking assembly includes a ring slidably connected to a circular shaft. An annular rubber pad is provided at one end of the ring near the baffle. A through notch is provided on the annular rubber pad. A rotating ring is threaded to the outer side of the ring. A clamping ring is fixedly connected to the end of the rotating ring near the annular rubber pad. The clamping ring is sleeved on the outer side of the annular rubber pad, and the inner diameter of the clamping ring is smaller than the outer diameter of the annular rubber pad. The outer surface of the circular shaft is provided with a groove along its axial direction, and a slider is fixedly connected to the inner wall of the circular ring, the slider being slidably embedded in the groove.

3. The easy-to-maintain plate heat exchanger according to claim 2, characterized in that, The outer surface of the rotating ring is provided with anti-slip texture.

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