Condensing device for a shell-and-tube condenser

Abstract

The application relates to the technical field of a shell-and-tube condenser, in particular to a condensing device of a shell-and-tube condenser, which comprises a condensing pipe, a quantitative feeding mechanism is arranged at a liquid inlet of the condensing pipe; the quantitative feeding mechanism comprises a feeding pipe communicated with the condensing pipe; an upper end surface of the feeding pipe is provided with a sliding plate; the sliding plate is slidably connected with a feeding barrel driven by a first driving mechanism; a medicine discharging assembly is arranged in the feeding barrel; a lower end surface of the feeding barrel is provided with a first abutting plate capable of abutting against the sliding plate; a medicine discharging barrel is fixedly arranged on the condensing pipe, a lower end surface of the medicine discharging barrel is provided with a medicine discharging opening; an upper end surface of the feeding barrel is provided with a second abutting plate abutting against the lower end surface of the medicine discharging barrel. The quantitative feeding mechanism cooperates with the first driving mechanism driven by fluid to realize dynamic quantitative feeding of the descaling agent according to flow, and the problems of scaling and feeding control are solved.

Description

Technical Field

[0001] This application relates to the technical field of shell and tube condensers, and in particular to a condensation device for a shell and tube condenser. Background Technology

[0002] Shell and tube condensers are heat exchange equipment widely used in industries such as chemical, pharmaceutical, food, and refrigeration. During operation, the condensing medium flowing within the tubes will form scale on the inner wall of the condenser tubes due to temperature changes and impurity deposition. Scale buildup increases the thermal resistance of the condenser tubes, reducing the heat exchange efficiency and increasing energy consumption. Simultaneously, scale buildup reduces the flow cross-section of the condenser tubes, increasing tube-side resistance, affecting the normal flow of the medium, and in severe cases, even causing blockage of the condenser tubes.

[0003] Currently, to address the scaling problem in the condenser tubes of shell-and-tube condensers, regular manual or chemical cleaning methods are commonly used. Manual cleaning requires shutting down the equipment, disassembling relevant components, and is not only labor-intensive and inefficient but also disrupts production continuity. Chemical cleaning involves adding descaling agents into the tubes for circulation cleaning, but existing chemical cleaning methods often cannot precisely control the amount of descaling agent added. Insufficient dosage will not achieve the desired descaling effect, while excessive dosage will corrode the condenser tubes and increase descaling costs.

[0004] A search revealed Chinese Patent Publication No. CN222257777U, which discloses a tube-and-shell condenser for pesticide intermediate production. The condenser includes a condenser with a motor on one side connected to a rotating rod. A pulley is sleeved on the outside of the rotating rod, and the pulley has a connecting block with a corresponding groove inside. Stirring blades are located on both sides of the rotating rod, which is inserted into the corresponding groove. Mounting blocks are located on the four end faces of the rotating rod, each with a mounting groove inside. A limiting through-hole is provided in the connecting block, and a U-shaped fixing rod is installed in the limiting through-hole. A spring A is located between two of the U-shaped fixing rods. Spring grooves are located on both sides inside the mounting blocks, and a spring B is installed inside each spring groove. A trapezoidal block is located at one end of spring B, and the U-shaped fixing rod has a trapezoidal groove into which the trapezoidal block is engaged.

[0005] Regarding the aforementioned related technologies, the inventors have discovered the following drawbacks: Existing technologies cannot precisely control the dosage of descaling agents, leading to a decrease in descaling effectiveness. This application aims to solve the technical problems in existing technologies where scaling on the inner wall of condenser tubes leads to reduced heat exchange efficiency and increased tube resistance, and where existing chemical cleaning methods cannot precisely control the amount of descaling agent added. By installing a quantitative dispensing mechanism driven by an impeller at the condenser tube inlet, and utilizing a dispensing cylinder, abutment plate, spring, and inclined plane, the descaling agent is dynamically and quantitatively dispensed according to the fluid flow rate. This improves heat exchange efficiency, reduces energy consumption, reduces the risk of tube blockage, and avoids corrosion and increased costs caused by excessive descaling agent dosage. Utility Model Content

[0006] In order to accurately deliver descaling agent into the condenser tubes, this application provides a condensation device for a shell-and-tube condenser.

[0007] This application provides a condensation device for a tube-and-shell condenser, employing the following technical solution: It includes a condenser tube, the inlet of which is equipped with a metering dispensing mechanism; the metering dispensing mechanism includes a dosing tube communicating with the condenser tube; a sliding plate is provided on the upper end face of the dosing tube; a dispensing cylinder driven by a first driving mechanism is slidably connected to the sliding plate; a dispensing component is provided inside the dispensing cylinder; a first abutment plate is provided on the lower end face of the dispensing cylinder, capable of abutting against the sliding plate; a dispensing cylinder is fixedly mounted on the condenser tube, the lower end face of the dispensing cylinder having a dispensing port; a second abutment plate is provided on the upper end face of the dispensing cylinder, abutting against the lower end face of the dispensing cylinder. A metered amount of reagent is dispensed into the dosing tube through the dispensing cylinder, allowing the reagent to enter the condenser tube for descaling.

[0008] Optionally, the upper part of the inner cavity of the dispensing cylinder is funnel-shaped and the lower part is cylindrical; the dispensing assembly includes a first sliding rod that is vertically slidably connected to the dispensing cylinder, the lower end face of the first sliding rod is provided with a first baffle that is adapted to the lower inner cavity of the dispensing cylinder, and the upper part of the first sliding rod is provided with a second baffle that has the same structure and specifications as the first baffle.

[0009] Optionally, a spring cylinder is provided inside the dispensing cylinder, and a compression spring is provided between the top wall of the first sliding rod and the corresponding surface of the spring cylinder.

[0010] Optionally, the side wall of the first baffle is provided with a first sliding block, and the inner wall of the dispensing cylinder is provided with a first sliding groove that matches the first sliding block.

[0011] Optionally, the first baffle is provided with a first inclined surface; the dosing tube is provided with a second inclined surface.

[0012] Optionally, the first drive mechanism includes an impeller rotatably connected to the inner cavity of the condenser tube, and a first bevel gear is coaxially fixedly mounted on the rotating shaft of the impeller.

[0013] Optionally, the condenser tube is vertically rotatably connected to a second rotating rod, and the second rotating rod is coaxially fixedly provided with a second bevel gear that meshes with the first bevel gear.

[0014] Optionally, a first rotating disk is coaxially fixedly mounted on the upper end face of the second rotating rod, and a first driving rod is located at a non-center position on the upper end face of the first rotating disk.

[0015] Optionally, a second driving rod is provided on the first abutting plate; the second driving rod is rotatably connected to a connecting plate, and the other end of the connecting plate is rotatably connected to the first driving rod.

[0016] In summary, this application includes the following beneficial technical effects: 1. This utility model, through the design of a quantitative dispensing mechanism, including the cooperation of a dispensing cylinder, a first abutment plate, and a second abutment plate, can precisely control the amount of descaling agent dispensed. When the dispensing cylinder slides directly below the dispensing cylinder, the agent falls into the dispensing cylinder; when it slides above the dispensing tube, the agent is released into the condenser tube, avoiding the problems of insufficient or excessive dispensing. Insufficient dispensing results in poor descaling effect, while excessive dispensing will corrode the condenser tube and increase descaling costs. This design solves both problems, ensuring descaling effect while reducing the risk of corrosion and cost caused by excessive dispensing.

[0017] 2. This invention utilizes a first driving mechanism to rotate an impeller driven by the fluid inside the condenser tubes. Through bevel gear transmission, a rotating disk, and a driving rod, the dispensing cylinder performs horizontal reciprocating sliding. Since the impeller speed is positively correlated with the fluid flow rate, the sliding frequency of the dispensing cylinder automatically adjusts with the fluid flow rate. When the fluid flow rate changes, the dispensing frequency of the descaling agent can be adjusted accordingly, achieving dynamic and precise dispensing without manual intervention. This avoids errors caused by manual control and ensures that the descaling agent is appropriately dispensed under different operating conditions, maintaining the good heat exchange efficiency of the shell-and-tube condenser. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application; Figure 2 This is a partial structural diagram of the overall embodiment of this application; Figure 3 This is a schematic diagram of the transmission relationship in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the first sliding rod in an embodiment of this application; Figure 5 This is a schematic diagram of the dispensing cylinder in an embodiment of this application; Figure 6 This is a schematic diagram of the impeller structure in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the discharge cartridge in the embodiments of this application.

[0019] Reference numerals in the attached drawings: 1. Condenser; 2. Dosing tube; 21. Second inclined plane; 3. Sliding plate; 4. Dosing cylinder; 41. First abutment plate; 42. Second abutment plate; 43. First sliding groove; 44. Second driving rod; 5. Discharge cylinder; 51. Discharge port; 61. First sliding rod; 62. First baffle; 63. First sliding block; 64. First inclined plane; 65. Second baffle; 7. Spring cylinder; 81. Impeller; 82. First bevel gear; 83. Second rotating rod; 84. Second bevel gear; 85. First rotating disk; 86. First driving rod; 9. Connecting plate. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-7 This application will be further described in detail below. The technical solutions in the embodiments of this application will be clearly described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0021] This application discloses a condensation device for a shell-and-tube condenser. For example... Figure 1 As shown, it includes a condenser tube 1. A metering dispensing mechanism is provided at the liquid inlet of the condenser tube 1. This mechanism is used to accurately dispense descaling agent into the condenser tube 1 to solve the problem of scaling on the inner wall of the condenser tube 1. The dosing tube 2 is connected to the liquid inlet of the condenser tube 1, and a horizontal sliding plate 3 is fixedly installed on its upper end face. The sliding plate 3 has a sliding groove adapted to the dispensing cylinder 4, and the dispensing cylinder 4 forms a horizontal sliding connection with the sliding plate 3 through the sliding groove. A first abutting plate 41 is fixed on the lower end face of the dispensing cylinder 4. When the dispensing cylinder 4 slides to a specific position, the first abutting plate 41 can tightly abut against the upper surface of the sliding plate 3 to achieve a sealing effect. A medicine dispensing cylinder 5 is fixedly installed above the liquid inlet of the condenser tube 1. A medicine dispensing port 51 is opened on the lower end face of the medicine dispensing cylinder 5. A second abutting plate 42 is fixed on the upper end face of the dispensing cylinder 4. When the dispensing cylinder 4 slides to a position other than directly below the medicine dispensing cylinder 5, the second abutting plate 42 abuts against the lower end face of the medicine dispensing cylinder 5, so that the dispensing cylinder 4 and the medicine dispensing cylinder 5 form a sealed communication state. When the dispensing cylinder 4 slides to a position directly below the medicine dispensing cylinder 5, the inner cavity of the dispensing cylinder 4 communicates with the inner cavity of the medicine dispensing cylinder 5, and the medicine in the inner cavity of the medicine dispensing cylinder 5 falls into the inner cavity of the dispensing cylinder 4 under the action of gravity.

[0022] Please see Figures 2-5The inner cavity of the dispensing cylinder is funnel-shaped at the top and cylindrical at the bottom. A first sliding rod 61 is vertically slidably connected to the lower inner wall of the dispensing cylinder 4. A first baffle 62 is fixed at the lower end of the first sliding rod 61, and a second baffle 65 with the same structure and specifications as the first baffle 62 is fixed at the upper part of the first baffle. A second sliding block with the same specifications as the first sliding block 63 is provided on the side wall of the second baffle 65. The outer diameter of the first baffle 62 is adapted to the diameter of the lower inner cavity of the dispensing cylinder 4, which can completely seal the bottom opening of the dispensing cylinder 4. When the first baffle 62 slides downward, the bottom opening of the dispensing cylinder 4 opens, and the second baffle 62 pushes the descaling agent from the dispensing cylinder 4 into the dosing pipe 2. At the same time, the second baffle 65 prevents the water in the dosing pipe 2 from flowing back into the dispensing cylinder 4 under water pressure.

[0023] Please see Figure 4 and Figure 5 A spring cylinder 7 is fixed inside the dispensing cylinder 4, and a compression spring is installed inside the spring cylinder 7. One end of the compression spring is connected to the inner wall of the spring cylinder 7, and the other end is connected to the top wall of the first sliding rod 61. When the lower end face of the first baffle 62 abuts against the sliding plate 3, the compression spring is in a compressed state, and the first sliding rod 61 is in its initial position, so that the first baffle 62 blocks the medicine outlet 51. When the lower opening of the dispensing cylinder 4 coincides with the inner cavity of the medicine delivery tube 2, the compression spring drives the first baffle 62 to move down, opening the lower opening of the dispensing cylinder 4, and causing the second baffle 62 to push the medicine in the dispensing cylinder 4 into the medicine delivery tube 2.

[0024] Please see Figure 4 and Figure 5 A first sliding block 63 is fixed to the side wall of the first baffle 62, and a first sliding groove 43 adapted to the first sliding block 63 is opened on the inner wall of the dispensing cylinder 4. The first sliding block 63 is embedded in the first sliding groove 43, so that the first baffle 62 can move synchronously with the sliding of the dispensing cylinder 4, while restricting the radial displacement of the first baffle 62 and blocking the lower opening of the dispensing cylinder 4.

[0025] Please see Figure 4 The lower end face of the first baffle 62 is provided with a first inclined surface 64, and the inner wall of the dosing tube 2 is provided with a corresponding second inclined surface 21. When the dosing tube 4 slides to the side of the dispensing tube 5, the first inclined surface 64 contacts the second inclined surface 21, and the second inclined surface 21 pushes the first inclined surface 64 upward, causing the first baffle 62 to move upward against the elastic force of the compression spring, thereby closing the lower opening of the dosing tube 4.

[0026] Please see Figure 3The first driving mechanism includes an impeller 81, which is installed in the inner cavity of the condenser tube 1, and the rotating shaft of the impeller 81 is rotatably connected to the condenser tube 1. A first bevel gear 82 is coaxially fixed to the rotating shaft of the impeller 81. A second rotating rod 83 is vertically rotatably connected to the outer wall of the condenser tube 1 via a bearing. A second bevel gear 84 is coaxially fixed to the lower end of the second rotating rod 83, and the second bevel gear 84 meshes with the first bevel gear 82. When the fluid flows in the condenser tube 1, it drives the impeller 81 to rotate. Through the meshing transmission of the first bevel gear 82 and the second bevel gear 84, the second rotating rod 83 rotates vertically.

[0027] Please see Figure 3 A first rotating disk 85 is coaxially fixed to the upper end face of the second rotating rod 83, and a first driving rod 86 is fixed to a non-central position on the upper end face of the first rotating disk 85. A second driving rod 44 is fixed to the upper surface of the first abutment plate 41, and the second driving rod 44 is rotatably connected to a connecting plate 9. The other end of the connecting plate 9 is rotatably connected to the first driving rod 86. When the first rotating disk 85 rotates with the second rotating rod 83, the first driving rod 86 performs circular motion, driving the second driving rod 44 to reciprocate through the connecting plate 9, thereby causing the dispensing cylinder 4 to slide horizontally back and forth on the sliding plate 3.

[0028] The implementation principle of a condensation device for a shell-and-tube condenser in this application is as follows: When the condensed medium flows in the condenser tube 1, it drives the impeller 81 to rotate. Through the transmission between the first bevel gear 82 and the second bevel gear 84, the second rotating rod 83 drives the first rotating disk 85 to rotate. When the first driving rod 86 rotates with the first rotating disk 85, it pushes the second driving rod 44 through the connecting plate 9, causing the dispensing cylinder 4 to slide back and forth on the sliding plate 3. When the dispensing cylinder 4 slides to directly below the dispensing cylinder 5, the first abutting plate 41 blocks the upper opening of the dispensing tube 2, and the inner cavity of the dispensing cylinder 4 coincides with the dispensing port 51 of the dispensing cylinder 5. The medicine in the dispensing cylinder 5 falls into the inner cavity of the dispensing cylinder 4 under the action of gravity. At this time, the lower end face of the first baffle 62 abuts against the sliding plate 3, the compression spring is in a compressed state, and the first sliding rod 61 is in the initial position, so that the first baffle 62 blocks the lower opening of the dispensing cylinder 4. When the dispensing cylinder 4 slides to directly above the dispensing cylinder 5, the second abutment plate 42 blocks the dispensing port 51 of the dispensing cylinder 5; the lower opening of the dispensing cylinder 4 coincides with the inner cavity of the dosing tube 2; the first baffle 62 is no longer limited by the sliding plate 3, and the compression spring drives the first baffle 62 to move down, opening the lower opening of the dispensing cylinder 4, and the second baffle 62 pushes the descaling agent from the dispensing cylinder 4 into the dosing tube 2. At the same time, the second baffle 65 prevents the water in the dosing tube 2 from flowing back into the dispensing cylinder 4 under water pressure. When the dispensing cylinder 4 moves toward the dispensing cylinder 5, the first inclined surface 64 contacts the second inclined surface 21, and the second inclined surface 21 pushes the first baffle 62 upward, causing the compression spring to compress and the opening at the bottom of the dispensing cylinder 4 to close. Since the rotational speed of impeller 81 is positively correlated with the fluid flow rate in condenser tube 1, the drive mechanism can automatically adjust the sliding frequency of dispensing cylinder 4 according to the fluid flow rate, thereby realizing the quantitative and dynamic dispensing of descaling agent, avoiding errors caused by manual control and the problem of excessive chemical cleaning.

Claims

1. A condensation device for a shell-and-tube condenser, comprising condenser tubes, characterized in that: The liquid inlet of the condenser tube is provided with a quantitative dispensing mechanism; the quantitative dispensing mechanism includes a dosing tube communicating with the condenser tube; a sliding plate is provided on the upper end face of the dosing tube; a dispensing cylinder driven by a first driving mechanism is slidably connected to the sliding plate; a dispensing component is provided inside the dispensing cylinder; a first abutting plate is provided on the lower end face of the dispensing cylinder that can abut against the sliding plate; a dispensing cylinder is fixedly provided on the condenser tube, and a dispensing port is provided on the lower end face of the dispensing cylinder; a second abutting plate is provided on the upper end face of the dispensing cylinder that abuts against the lower end face of the dispensing cylinder.

2. The condensation device for a shell-and-tube condenser according to claim 1, characterized in that: The upper part of the inner cavity of the dispensing cylinder is funnel-shaped, and the lower part is cylindrical. The dispensing assembly includes a first sliding rod that is vertically slidably connected to the dispensing cylinder. The lower end face of the first sliding rod is provided with a first baffle that is adapted to the lower inner cavity of the dispensing cylinder. The upper part of the first sliding rod is provided with a second baffle that has the same structure and specifications as the first baffle.

3. The condensation device for a shell-and-tube condenser according to claim 1, characterized in that: A spring cylinder is installed inside the dispensing cylinder, and a compression spring is installed between the top wall of the first sliding rod and the corresponding surface of the spring cylinder.

4. A condensing device for a shell-and-tube condenser according to claim 2, characterized in that: The first baffle is provided with a first sliding block on its side wall, and the inner wall of the dispensing cylinder is provided with a first sliding groove that matches the first sliding block; the second baffle is provided with a second sliding block of the same specifications as the first sliding block on its side wall.

5. A condensing device for a shell-and-tube condenser according to claim 4, characterized in that: The first baffle is provided with a first inclined surface; the dosing tube is provided with a second inclined surface.

6. A condensing device for a shell-and-tube condenser according to claim 1, characterized in that: The first drive mechanism includes an impeller rotatably connected to the inner cavity of the condenser tube, and a first bevel gear is coaxially fixedly mounted on the rotating shaft of the impeller.

7. A condensing device for a shell-and-tube condenser according to claim 1, characterized in that: The condenser tube is vertically rotatably connected to a second rotating rod, and the second rotating rod is coaxially fixed with a second bevel gear that meshes with the first bevel gear.

8. A condensing device for a shell-and-tube condenser according to claim 7, characterized in that: The upper end face of the second rotating rod is coaxially fixed with a first rotating disk, and a first driving rod is located at a non-center position on the upper end face of the first rotating disk.

9. A condensing device for a shell-and-tube condenser according to claim 1, characterized in that: The first abutting plate is provided with a second driving rod; the second driving rod is rotatably connected to a connecting plate, and the other end of the connecting plate is rotatably connected to the first driving rod.

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