Push-pull mechanism and air preheater device

Abstract

The invention relates to the technical field of air preheaters, in particular to a push-pull mechanism and an air preheater device.The push-pull mechanism comprises a heat exchange component, and a push-pull groove is formed in the outer side of the heat exchange component; the pushing assembly comprises a pushing base, a pressure block and an adsorption hole, the pushing base can move in the first direction to push the heat exchange component into the grating space, when the pushing base makes contact with the heat exchange component, the pressure block moves in the second direction to generate suction force on the adsorption hole, and the first direction is opposite to the second direction; and the pulling assembly comprises a pushing rod, a rotary extrusion piece and a clamping jaw, and a pushing block is arranged in the pushing base and can move in the second direction. The method has the beneficial effects that the installation precision is remarkably improved through a negative pressure adsorption detection mechanism, and compared with a traditional installation method depending on manual judgment, accurate alignment is achieved through non-contact real-time monitoring, and the problem that the installation efficiency is reduced due to component deviation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air preheaters, in particular to a push-pull mechanism and an air preheater device. Background Art

[0002] With the rapid development of the industrial sector, air preheaters, as a highly efficient heat exchange device, are widely used in systems such as boilers and industrial furnaces. Their main function is to transfer and recover heat through heat exchange components, thereby improving thermal energy utilization efficiency and reducing energy consumption. However, the core components of air preheaters, heat exchange components, will require regular maintenance, replacement, or cleaning after long-term operation due to dust accumulation, corrosion, or wear. Existing methods for installing and removing heat exchange components mostly rely on manual operation or simple mechanical assistance, which has the following problems:

[0003] Traditional manual installation is time-consuming and labor-intensive, requiring operators to manually push the heat exchange components into the air preheater's grille space. Due to the large size and weight of heat exchange components, and the typically narrow entrance to the grille space, manual operation makes it difficult to ensure precise component alignment. Any misalignment or misalignment during installation can not only affect heat exchange efficiency but also lead to unstable equipment operation and even failure. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that it is difficult to ensure the precise alignment of components by manual operation. If deflection or position deviation occurs during the installation process, it will not only affect the heat exchange efficiency, but also may cause unstable operation of the equipment.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a push-pull mechanism, which includes a heat exchange component, and a push-pull groove is opened on the outside of the heat exchange component; a pushing component, including a pushing seat, a pressure block and an adsorption hole, the pushing seat can move along a first direction to push the heat exchange component into the grille space, and when the pushing seat contacts the heat exchange component, the pressure block moves along a second direction to generate suction on the adsorption hole, and the first direction and the second direction are opposite; a pulling component, including a pushing rod, a rotating extrusion part and a claw, the pushing block is arranged inside the pushing seat and can move along the second direction, when the pushing rod moves along the second direction, it will drive the rotating extrusion part to rotate and apply thrust to the claw, so that the claw extended into the push-pull groove is unfolded.

[0006] In a preferred embodiment of the push-pull mechanism of the present invention: a connecting rod is provided at one end of the pushing seat, and the input end of the connecting rod is connected to the cylinder, so that the activation of the cylinder can drive the connecting rod, and then the pushing seat pushes the heat exchange component into the air preheater grille space to achieve rapid installation of the heat exchange component.

[0007] In a preferred embodiment of the push-pull mechanism of the present invention: the pressure block is slidably arranged inside the pushing seat, the pressure cylinder is fixedly arranged inside the pushing seat and accommodates the pressure block to slide therein, a piston is provided inside the pressure cylinder and moves as the pushing seat slides, and the adsorption hole is opened on the outside of the pushing seat and is connected to the pressure cylinder.

[0008] In a preferred embodiment of the push-pull mechanism of the present invention: the pushing component further includes a detection tube, which passes through the pressure cylinder and the piston; and a detection ring, which is connected to the detection tube and has a pressure-sensitive material disposed therein.

[0009] In a preferred embodiment of the push-pull mechanism of the present invention: a push ring is fixed on the outside of the pressure block, and when the pressure block slides toward the inside of the push seat, it drives the push ring to move, and the push ring pushes the sealing ring arranged on the outside of the pressure cylinder to slide, so that the sealing ring opens the closed air holes on the pressure cylinder, and the gas is extracted from the adsorption hole through the sealing tube on the sealing ring.

[0010] In a preferred embodiment of the push-pull mechanism of the present invention: the pulling assembly further includes a trigger rod fixedly provided inside the push-pull groove, a trigger groove is provided on the push seat to accommodate the insertion of the trigger rod, and a push rod is slidably provided in the trigger groove.

[0011] In a preferred embodiment of the push-pull mechanism of the present invention: the rotating extrusion member also includes a driving block, which is hingedly arranged on the outside of the pushing rod; a driving disk, which has a plurality of arc-shaped driving grooves on the outside, and the arc-shaped driving grooves are slidingly arranged with the driving block; an extrusion disk, which is coaxially connected to the driving disk, and has a plurality of extrusion blocks distributed at intervals on the extrusion disk; an extension rod, which is arranged on one side of the extrusion block; the clamping claw is hinged to the pushing seat and is driven by the extension rod to rotate outward and expand.

[0012] In a preferred embodiment of the push-pull mechanism of the present invention, when the driving block moves away from the extrusion disk, the driving disk extrudes the driving block to rotate.

[0013] In a preferred embodiment of the push-pull mechanism of the present invention: a fixing seat is installed at the fixed end of the connecting rod, and the fixing seat is installed on the lifting platform.

[0014] In order to solve the above technical problems, the present invention further provides the following technical solutions: the air preheater device includes a push-pull mechanism, and a moving part is installed at the bottom of the lifting platform;

[0015] A linear sliding seat is provided on the fixed seat, and the fixed end of the connecting rod is fixed to the linear sliding seat.

[0016] The beneficial effects of this invention are: Installation accuracy is significantly improved through a negative pressure adsorption detection mechanism. The pressure block is squeezed when the pusher seat contacts the heat exchange component, driving the piston to slide within the pressure cylinder to generate negative pressure. The adsorption hole uses this negative pressure to adsorb the heat exchange component to ensure a tight fit. The pressure-sensitive material set within the detection ring changes color according to the negative pressure state, providing intuitive visual feedback. Compared with traditional installation methods that rely on manual judgment, precise alignment achieved through non-contact real-time monitoring solves the problem of reduced installation efficiency caused by component offset.

[0017] The push rod, rotating extrusion element, and claws work together to efficiently remove the heat exchange component. The push rod drives the rotating extrusion element, allowing the claws to precisely expand and extend into the heat exchange component's push-pull slots. Once expanded, the claws' diameter is larger than the slot's inner diameter, firmly securing the heat exchange component for smooth removal. Compared to traditional manual removal methods, this significantly improves operational efficiency and component protection.

[0018] The sealing ring is driven to slide by the push ring on the outside of the pressure block, which controls the opening of the closed air holes on the pressure cylinder. After confirming effective contact, the sealing tube extracts the gas in the adsorption hole, forming a delayed and strong negative pressure adsorption, avoiding misjudgment caused by incomplete contact.

[0019] The lifting platform allows the operator to adjust the device's position based on the actual height of the grille space, ensuring seamless alignment of the heat exchange components with the grille space entrance. This design overcomes the problems of traditional fixed-height devices that can easily cause jamming or component damage depending on the equipment model or installation environment, significantly improving the versatility and safety of installation and removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0021] Figure 1 Shows an overall perspective view of the push-pull mechanism;

[0022] Figure 2 A partial enlarged view of the push component of the push-pull mechanism is shown;

[0023] Figure 3 An exploded perspective view of a push assembly of a push-pull mechanism is shown;

[0024] Figure 4 An exploded perspective view of the rotating extrusion member of the push-pull mechanism is shown;

[0025] Figure 5 A diagram showing the deployment of the claws of the push-pull mechanism is shown;

[0026] Figure 6 A three-dimensional view of the lifting platform of the push-pull mechanism is shown. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0028] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0029] Reference Figure 1-2 , this embodiment provides a push-pull mechanism, including an air preheater, including a grille space and a plurality of heat exchange components 1 movably installed in the grille space, wherein a push-pull groove 11 is provided on the outside of the heat exchange component 1; a pushing component 2, including a pushing seat 21, a pressure block 22 and an adsorption hole 23, wherein the pushing seat 21 can move along a first direction to push the heat exchange component 1 into the grille space; when the pushing seat 21 contacts the heat exchange component 1, the pressure block 22 moves along a second direction to generate suction on the adsorption hole 23, and the first direction and the second direction are opposite; a pulling component 3, including a pushing rod 31, a rotating extrusion member 32 and a claw 33, wherein the pushing block is arranged inside the pushing seat 21 and can move along the second direction; when the pushing rod 31 moves along the second direction, it drives the rotating extrusion member 32 to rotate and apply a thrust to the claw 33, so that the claw 33 extending into the push-pull groove 11 is unfolded.

[0030] In this embodiment, the air preheater is a device used for heat exchange, and its core function is to achieve heat transfer and utilization through the heat exchange component 1 to improve the thermal energy utilization efficiency.

[0031] The grille space is used to accommodate multiple heat exchange components 1. The grille space acts as a fixed frame, providing support and positioning for the heat exchange components 1, ensuring stable heat exchange during operation. The design of the grille space allows for the flexible installation of multiple heat exchange components 1, facilitating subsequent maintenance and replacement.

[0032] The heat exchange component 1 is the core element in the air preheater that directly transfers heat. Each heat exchange component 1 is equipped with a push-pull slot 11 on its outer side. This slot 11 provides an interface for the pull assembly 3, allowing the heat exchange component 1 to be precisely pushed in or pulled out of the grille space.

[0033] The pushing assembly 2 is used to push the heat exchange component 1 into the grid space, and its structure includes a pushing seat 21 , a pressure block 22 and adsorption holes 23 .

[0034] The pushing seat 21 can move along a first direction (defined as a direction of pushing into the grille space) and is responsible for pushing the heat exchange component 1 into a predetermined position in the grille space.

[0035] When the pushing seat 21 contacts the heat exchange component 1 , the pressure block 22 moves in a second direction (opposite to the first direction, ie, the pulling direction) to generate suction on the adsorption hole 23 .

[0036] The pulling assembly 3 is used to pull the heat exchange component 1 out of the grid space, and its structure includes a pushing rod 31 , a rotating extrusion member 32 and a claw 33 .

[0037] The pushing rod 31 is disposed inside the pushing seat 21 and is capable of moving along the second direction.

[0038] When the push rod 31 moves along the second direction, it drives the rotary extrusion member 32 to rotate.

[0039] The rotation of the rotary extruder 32 applies a thrust to the claws 33 , causing the claws 33 to unfold and extend into the push-pull grooves 11 of the heat exchange component 1 , thereby achieving the fixation and pulling out of the heat exchange component 1 .

[0040] Pushing assembly 2 moves in a first direction via pusher seat 21, pushing heat exchange component 1 into the grille space. When pusher seat 21 contacts heat exchange component 1, pressure block 22 moves in a second direction, generating suction through suction holes 23 to ensure a stable connection between pusher seat 21 and heat exchange component 1. This suction detection mechanism prevents displacement or loosening of heat exchange component 1 during insertion, ensuring precise installation.

[0041] Pulling assembly 3 pulls out heat exchange component 1 through a linkage mechanism involving a push rod 31, a rotating extrusion member 32, and claws 33. When push rod 31 moves in the second direction, the rotating extrusion member 32 rotates and applies a thrust to claws 33, causing them to expand and extend into push-pull slot 11. The expansion of claws 33 securely grasps heat exchange component 1, enabling a smooth pull-out operation.

[0042] refer to Figure 1-4In one embodiment provided in the present application, the pushing seat 21 is used to align with the heat exchange component 1 and apply thrust thereto. A connecting rod 211 is provided at one end of the pushing seat 21. The output end of the connecting rod 211 is fixedly connected to the pushing seat 21, and the input end thereof is connected to the cylinder, so that the activation of the cylinder can drive the connecting rod 211, and then the pushing seat 21 pushes the heat exchange component 1 into the air preheater grille space to achieve rapid installation of the heat exchange component 1. The pressure block 22 is slidably disposed inside the pushing seat 21. When the pushing seat 21 is in contact with the heat exchange component 1, the pressure block 22 is squeezed by the heat exchange component 1 and contracts into the inside of the pushing seat 21. The pressure cylinder 212 is fixedly disposed inside the pushing seat 21 and accommodates the pressure block 22 to slide therein. A piston is provided inside the pressure cylinder 212, and moves as the push seat 21 slides, thereby generating negative pressure inside the pressure cylinder 212; the adsorption hole 23 is opened on the outside of the push seat 21 and is connected to the pressure cylinder 212. When the adsorption hole 23 is in contact with the heat exchange component 1, the negative pressure can adsorb the heat exchange component 1, thereby playing a detection role.

[0043] The pushing assembly 2 also includes a detection tube 24 that passes through the pressure cylinder 212 and the piston; a detection ring 25 that is connected to the detection tube 24 and has a pressure-sensitive material 251 inside. When the pressure cylinder 212 is in a negative pressure state, the gas inside the detection ring 25 is extracted by the pressure cylinder 212, causing the air pressure to decrease. The color of the pressure-sensitive material 251 changes when the air pressure changes, thereby serving as a reminder to the staff; when the air pressure inside the pressure cylinder 212 is balanced, the color of the pressure-sensitive material 251 is restored.

[0044] In this embodiment, the connecting rod 211 and the pushing seat 21 driven by the cylinder achieve fast and labor-saving installation of the heat exchange component 1, which completely solves the time-consuming and labor-intensive problem of traditional manual installation.

[0045] Negative pressure adsorption testing effectively addresses the problem of manual operation making it difficult to ensure precise alignment of component installation positions, leading to deflection and thus affecting the operating efficiency of the air preheater. Its working principle is that when the push seat 21 pushes the heat exchange component 1 into position and makes close contact with it, the pressure block 22 inside the push seat 21 is squeezed and drives the piston to move in the pressure cylinder 212, thereby generating negative pressure in the pressure cylinder 212 connected to the adsorption hole 23. This negative pressure causes the adsorption hole 23 to generate an adsorption force on the heat exchange component 1, serving as a preliminary contact detection function. The adsorption hole 23 can also be equipped with a rubber ring to improve contact sealing.

[0046] If the heat exchange component 1 deviates during the insertion process due to friction or other factors, causing its contact surface with the push seat 21 to be non-planar, some of the adsorption holes 23 will not be able to fit tightly against the heat exchange component 1, making it impossible to maintain the negative pressure inside the pressure cylinder 212. At this time, the detection system connected to the detection ring 25 through the detection tube 24 will immediately respond: the loss of negative pressure will cause the air pressure inside the detection ring 25 to return to balance, thereby restoring the color of the pressure-sensitive material 251 and immediately issuing an abnormality alarm to the staff. Conversely, if the components are installed in place and accurately aligned, the negative pressure is maintained, and the color of the pressure-sensitive material 251 changes, it means that the installation is successful and the positioning is accurate.

[0047] This system enables real-time, non-contact accuracy monitoring during installation and provides intuitive visual feedback. It transforms a process that previously relied on experience and visual judgment into a reliable physical detection mechanism, significantly improving the positioning accuracy of the heat exchange component 1 and preventing the loss of air preheater operating efficiency caused by misalignment.

[0048] refer to Figure 2-3 As an optional embodiment, a push ring 221 is fixed on the outside of the pressure block 22. When the pressure block 22 slides toward the inside of the push seat 21, it drives the push ring 221 to move. The push ring 221 pushes the sealing ring 222 sliding on the outside of the pressure cylinder 212 to slide, so that the sealing ring 222 opens the closed air holes on the pressure cylinder 212, and the gas is extracted from the adsorption hole 23 through the sealing tube 223 on the sealing ring 222.

[0049] In this embodiment, when the heat exchange component 1 contacts the push seat 21 and compresses the pressure block 22, the inward contraction of the pressure block 22 not only triggers the generation of negative pressure, but also drives the sliding of the sealing ring 222 via the push ring 221. During the sliding process, the sealing ring 222 accurately opens the originally sealed air holes in the pressure cylinder 212.

[0050] Once the pores are opened, the sealing tube 223 integrated into the sealing ring 222 rapidly extracts the gas from the adsorption holes 23, achieving rapid and powerful negative pressure adsorption. This step-by-step design of extrusion - negative pressure generation - pore opening - gas extraction adds a "valve" control to the adsorption process, ensuring instantaneous adsorption, compared to simple negative pressure connection.

[0051] This arrangement allows the adsorption holes 23 to achieve a delayed and enhanced adsorption effect, meaning that adsorption is fully initiated only after effective contact is confirmed. This not only improves the efficiency of adsorption and avoids misjudgments due to incomplete contact, but also enhances the reliability of adsorption, resulting in more accurate detection results.

[0052] refer to Figure 2 and Figure 4-5 As an optional embodiment, the pulling assembly 3 further includes a trigger rod 111 fixedly provided inside the push-pull groove 11; a trigger groove 112, which is opened on the pushing seat 21 and accommodates the insertion of the trigger rod 111; and a pushing rod 31, when the trigger rod 111 is located in the trigger groove 112, the trigger rod 111 will push the pushing rod 31 slidingly set inside the trigger groove 112.

[0053] The rotating extrusion member 32 also includes a driving block 321, which is hingedly arranged on the outside of the pushing rod 31; an arc-shaped driving groove 323, and the driving block 321 passes through the arc-shaped driving groove 323 when moving; a driving disk 322, and the driving block 321 generates a driving force on the driving disk 322 when passing through the arc-shaped driving groove 323, so that the driving disk 322 rotates to a preset angle; an extrusion disk 324, which coaxially drives the driving disk 322 to rotate, and a plurality of extrusion blocks 326 are spaced apart on the extrusion disk 324, and the extrusion blocks 326 are triangular in shape; an extension rod 325, when the extrusion block 326 apex squeezes the extension rod 325; and the claw 33, which is hingedly connected to the pushing seat 21 and is driven by the extension rod 325 to rotate outward and expand. The diameter of the expanded claw 33 is larger than the inner diameter of the push-pull groove 11, so the claw 33 is against the frame of the heat exchange component 1 to pull the heat exchange component 1 out.

[0054] In this embodiment, when the heat exchange component 1 needs to be removed, the operator aligns the push seat 21 with the push-pull groove 11 on the component and pushes it in. At this time, the trigger rod 111 inside the push-pull groove 11 will be accurately inserted into the trigger groove 112 of the push seat 21, thereby activating the entire pull-out assembly.

[0055] The trigger lever 111 first pushes the push rod 31, which in turn drives the push rod 31. The drive block 321, hinged on the outside of the push rod 31, then moves along the arcuate drive slot 323. Its motion transmits force to the drive disc 322, causing it to rotate to a predetermined angle. The drive disc 322 then coaxially rotates the squeeze disc 324. The triangular squeeze blocks 326 evenly distributed on the squeeze disc 324, when their vertices contact and squeeze the extension rod 325, cause the movement of the extension rod 325 to open the claws 33 through the hinge point.

[0056] The diameter of the claws 33 when fully expanded is designed to be larger than the inner diameter of the push-pull slot 11, which enables the claws 33 to firmly press against the internal structure of the heat exchange component 1. Once the claws 33 are expanded and locked, the heat exchange component 1 can be smoothly and forcefully pulled out of the grille space by reversing the operation of the connecting rod 211 and other components (or withdrawing the entire device).

[0057] It solves the problems often encountered in manual disassembly, such as laborious work, difficult alignment, and easy damage to components. It reduces the workload and ensures the integrity of components during the pulling process.

[0058] When the operator needs to reset the claw 33 to separate the push seat 21 from the heat exchange component 1, they simply insert the trigger rod 111 into the trigger slot 112 of the push seat 21. This insertion reactivates the push rod 31 and its subsequent drive mechanism, causing the drive block 321 to once again rotate the drive disk 322 and the squeeze disk 324. However, unlike when the claw 33 is deployed, during the reset process, the lowest point of the rotating squeeze block 326 precisely contacts the extension rod 325. A reset spring is abutted against one end of the push rod 31 to facilitate its reset and sliding motion.

[0059] At this point, the torsion spring force, pre-set at the axis of the claw 33, is released. The torsion spring design ensures that, after being extended by force, the claw 33 naturally tends to return to its retracted state when the force is removed. When the lowest point of the extrusion block 326 contacts the extension rod 325, no longer exerting the outward force, the torsion spring force smoothly rotates the claw 33 inward, returning it to its original retracted state. Once the claw 33 is restored, the push seat 21 can be easily disengaged from the push-pull slot 11.

[0060] This automatic reset mechanism greatly improves the convenience and safety of operation, avoiding the wear or damage of components that may be caused by manual forced reset, and does not require additional tools or complicated steps.

[0061] refer to Figure 4-5 As an optional embodiment, the driving block 321 is hinged to the push rod 31, so when the driving block 321 moves away from the extrusion disk 324, the driving disk 322 will automatically lift the driving block 321, so the driving disk 322 is only driven by a force in a single direction, and a friction damping layer is added at the rotation point of the driving disk 322, thereby improving the stability during rotation.

[0062] In this embodiment, the hinged connection between the drive block 321 and the push rod 31, combined with the automatic lifting mechanism of the drive disc 322, ensures that the drive disc 322 is driven only from a single direction during its entire rotational process. This means that the rotation of the drive disc 322 is controlled and directional, avoiding lag or unnecessary reverse motion that could result from bidirectional forces, thereby ensuring smooth and precise transmission.

[0063] Secondly, a friction damping layer is added to the rotating portion of the drive disc 322. This layer effectively absorbs and dissipates the minute vibrations and impacts generated during rotation. It acts as a "buffer," smoothing the rotation process, reducing noise and wear, and preventing transient jitter or overshoot that may occur during starting, stopping, or load changes.

[0064] refer to Figure 1 and Figure 6 As an optional embodiment, a fixing seat 4 is installed at the fixed end of the connecting rod 211, and the fixing seat 4 is installed on a lifting platform 5. The lifting platform 5 can adjust its own height so that the heat exchange component 1 can be disassembled and assembled to be consistent with the height of the air preheater grille space, which is convenient for installation.

[0065] In this embodiment, by installing the fixed end of the connecting rod 211 on the fixing base 4, and further installing the fixing base 4 on a height-adjustable lifting platform 5, the entire installation and disassembly device has height adjustability.

[0066] In industrial sites, the height of the air preheater grille space can vary depending on the equipment model, installation location, or floor conditions. Without a height adjustment feature, operators would likely need to perform complex maneuvers such as stepping up or squatting to install or remove the heat exchanger 1, which is not only inefficient but also poses a safety hazard. The introduction of the lifting platform 5 completely solves this problem. The operator can precisely adjust the height of the lifting platform 5 to ensure that the heat exchanger 1 is perfectly aligned with the entrance height of the grille space.

[0067] This precise height alignment is crucial for automated installation. It ensures that the pusher seat 21 and heat exchange component 1 can smoothly enter the grille space, avoiding jamming, scratching, or component damage caused by height deviation. It also ensures that components can be smoothly pulled out and placed during removal. Therefore, the lifting platform 5 not only significantly improves the efficiency of installation and removal and reduces the complexity of manual intervention, but more importantly, it enhances operational safety and reduces the risk of equipment damage, making the device more versatile and adaptable to field applications.

[0068] Reference Figure 6 This embodiment provides an air preheater device, including a moving part 51 installed at the bottom of the lifting platform 5, which is convenient for driving the placed heat exchange component 1 to move, so as to facilitate transportation and cleaning; a linear sliding seat 52 is provided on the fixed seat 4, and the fixed end of the connecting rod 211 is fixed to the linear sliding seat 52, so the pushing seat 21 can be aligned or staggered with the push-pull groove 11 as needed.

[0069] In this embodiment, a moving part 51 (such as a universal wheel or a track pulley) is installed at the bottom of the lifting platform 5. The heat exchange component 1 is usually large in size and heavy in weight. Traditionally, it is extremely labor-intensive and time-consuming to move and clean it. By making the entire installation and disassembly device mobile, the heat exchange component 1 can be directly moved from the storage area to the vicinity of the air preheater. After installation, it can also be easily removed for cleaning or storage. This not only greatly improves operating efficiency and reduces the need for additional handling equipment, but also reduces safety risks during the handling process, making equipment maintenance and turnover extremely convenient.

[0070] Secondly, a linear sliding seat 52 is provided on the fixed seat 4, and the fixed end of the connecting rod 211 is fixed thereto, providing the device with a critical lateral adjustment capability. In actual operation, even if the height is aligned, there may be a slight horizontal deviation between the push seat 21 and the push-pull groove 11 on the heat exchange component 1. Manual fine-tuning of this type is both time-consuming and imprecise. The linear sliding seat 52 allows the fixed end of the connecting rod 211 to be finely adjusted in a linear sliding direction in the horizontal direction, so that the push seat 21 can achieve extremely precise "corresponding" and "misaligned" adjustment with the push-pull groove 11 of the heat exchange component 1.

[0071] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A push-pull mechanism, characterized in that: include, A heat exchange component (1), wherein a push-pull groove (11) is provided on the outer side of the heat exchange component (1); A pushing assembly (2) comprises a pushing seat (21), a pressure block (22) and an adsorption hole (23); the pushing seat (21) can move in a first direction to push the heat exchange component (1); when the pushing seat (21) contacts the heat exchange component (1), the pressure block (22) moves in a second direction to generate a suction force on the adsorption hole (23); the first direction and the second direction are opposite; The pulling assembly (3) comprises a pushing rod (31), a rotating extrusion member (32) and a claw (33); the pushing block is arranged inside the pushing seat (21) and can move along a second direction; when the pushing rod (31) moves along the second direction, it drives the rotating extrusion member (32) to rotate and apply a thrust to the claw (33), so that the claw (33) extending into the pushing and pulling groove (11) is unfolded.

2. The push-pull mechanism according to claim 1, characterized in that: One end of the pushing seat (21) is provided with a connecting rod (211), and the input end of the connecting rod (211) is connected to the cylinder.

3. The push-pull mechanism according to claim 2, characterized in that: The pressure block (22) is slidably arranged inside the pushing seat (21); a pressure cylinder (212) is fixedly provided inside the pushing seat (21) to accommodate the pressure block (22) to slide therein; a piston is provided inside the pressure cylinder (212) and moves as the pushing seat (21) slides; the adsorption hole (23) is opened on the outside of the pushing seat (21) and is connected to the pressure cylinder (212).

4. The push-pull mechanism according to any one of claims 1 to 3, characterized in that: The pushing component (2) further includes, A detection tube (24) passes through the pressure cylinder (212) and the piston; The detection ring (25) is connected to the detection tube (24) and has a pressure-sensitive material (251) disposed therein.

5. The push-pull mechanism according to claim 4, characterized in that: A push ring (221) is fixed on the outside of the pressure block (22). When the pressure block (22) slides toward the inside of the push seat (21), the push ring (221) is driven to move. The push ring (221) pushes a sealing ring (222) arranged on the outside of the pressure cylinder (212) to slide, so that the sealing ring (222) opens the sealed air hole on the pressure cylinder (212). Gas passes through the sealing tube (223) on the sealing ring (222) to extract the gas in the adsorption hole (23).

6. The push-pull mechanism according to claim 5, characterized in that: The pulling assembly (3) further comprises a trigger rod (111) fixedly provided inside the push-pull groove (11), a trigger groove (112) is provided on the pushing seat (21) to accommodate the insertion of the trigger rod (111), and a pushing rod (31) is slidably provided in the trigger groove (112).

7. The push-pull mechanism according to claim 6, characterized in that: The rotating extrusion member (32) further comprises, A driving block (321) is hingedly arranged on the outside of the pushing rod (31); A driving disk (322) is provided with a plurality of arc-shaped driving grooves (323) on the outer side, wherein the arc-shaped driving grooves (323) are slidably arranged with the driving block (321); An extrusion disk (324) is coaxially connected to the driving disk (322), and a plurality of extrusion blocks (326) are spaced apart on the extrusion disk (324); An extension rod (325) is provided on one side of the extrusion block (326); The clamping claw (33) is hinged to the pushing seat (21) and is driven by the extension rod (325) to rotate outward and expand.

8. The push-pull mechanism according to claim 7, characterized in that: When the driving block (321) moves in a direction away from the extrusion disk (324), the driving disk (322) squeezes the driving block (321) to cause rotation.

9. The push-pull mechanism according to claim 2, characterized in that: A fixing seat (4) is installed at the fixed end of the connecting rod (211), and the fixing seat (4) is installed on the lifting platform (5).

10. An air preheater device, characterized in that: comprising a push-pull mechanism as claimed in claim 9, and A moving part (51) is installed at the bottom of the lifting platform (5), a linear sliding seat (52) is provided on the fixed seat (4), and the fixed end of the connecting rod (211) is fixed to the linear sliding seat (52).

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