Drainage hydrophobic device for a steam sterilizer

Abstract

The utility model discloses a kind of discharging hydrophobic devices of steam sterilizer, it is related to steam sterilizer technical field, including steam pipeline, steam pipeline is fixedly installed with hydrophobic valve body, drain outlet is opened in the bottom edge position of hydrophobic valve body, drain outlet is opened in the middle position of the bottom of hydrophobic valve body, sealing mechanism is installed at drain outlet, sealing mechanism includes the mounting bracket fixedly installed at drain outlet, fixedly installed with positioning sleeve on mounting bracket, positioning sleeve is movably installed with telescopic link in, fixedly installed with spring seat on telescopic link, telescopic link is set with reset spring, telescopic link lower end is fixedly installed with sealing plug, and sealing plug is aligned with drain outlet up and down, driving assembly is fixedly installed on the positioning sleeve upper end. The discharging hydrophobic device of the steam sterilizer, by the cooperation of sealing mechanism and driving assembly, can automatically discharge the condensate in steam pipeline, and steam can be prevented from overflowing through drain outlet.

Description

Technical Field

[0001] This utility model relates to the field of steam sterilizer technology, specifically a drainage device for a steam sterilizer. Background Technology

[0002] A steam sterilizer is a specialized device that uses high-temperature saturated steam to kill microorganisms under high pressure. Steam is usually transported into the sterilizer through pipes. During the steam transport process, condensate will form inside the pipes. The condensate adheres to the pipe walls and forms an insulation layer, which hinders the heat transfer of steam and reduces the system's energy utilization rate.

[0003] In the prior art, patent announcement number CN222911340U discloses a steam trap for installation on a steam pipe. The steam trap includes a trap body and a drainage mechanism. The trap body is installed at the bottom of the steam pipe and forms a cavity connected to the steam pipe. The bottom wall of the cavity has a drain outlet. The drainage mechanism is disposed in the cavity and includes a movable part, a support part, and a sealing part. The support part is vertically installed on the bottom wall of the cavity. The movable part is rotatably connected to the support part, and the first connection point between the movable part and the support part is arranged between the two ends of the movable part.

[0004] The above-mentioned device uses the cooperation of the support and the movable parts to drive the sealing head to move up and down to achieve the drainage function. However, the thermal expansion and contraction of the support is not instantaneous. After the condensate is completely drained, the drainage pipe cannot be immediately sealed and cleaned by the sealing head, which poses a risk of a small amount of steam leakage. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage device for a steam sterilizer to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drainage device for a steam sterilizer, comprising a steam pipe, a drainage valve body fixedly installed on the steam pipe, a drain outlet at the bottom edge of the drainage valve body, a drain outlet at the middle of the bottom of the drainage valve body, a sealing mechanism installed at the drain outlet, the sealing mechanism comprising a mounting bracket fixedly installed at the drain outlet, a positioning sleeve fixedly installed on the mounting bracket, a telescopic rod movably installed inside the positioning sleeve, a spring seat fixedly installed on the telescopic rod, a return spring sleeved on the telescopic rod, a sealing plug fixedly installed at the lower end of the telescopic rod, and the sealing plug being vertically aligned with the drain outlet, and a driving assembly fixedly installed at the upper end of the positioning sleeve.

[0007] Preferably, a filter screen is fixedly installed on the mounting bracket, and a threaded hole is provided at the upper end of the telescopic rod.

[0008] Preferably, the positioning sleeve has movable holes at both the upper and lower ends, and the telescopic rod passes through the positioning sleeve through the movable holes.

[0009] Preferably, the telescopic rod is movably installed inside the positioning sleeve via a spring seat, one end of the return spring is connected to the bottom of the positioning sleeve, the other end of the return spring is connected to the spring seat, and the sealing plug is movably installed above the drain outlet via the telescopic rod.

[0010] Preferably, the drive assembly includes a metal cylinder fixedly installed on the upper end of the positioning sleeve, heat exchange fins fixedly installed on the upper half of the metal cylinder, a heat insulation sleeve fixedly installed on the lower half of the metal cylinder, metal liquid receiving trays spaced apart inside the metal cylinder, a piston movably installed inside the metal cylinder, a push rod fixedly installed at the middle position of the bottom of the piston, and a threaded rod fixedly installed at the lower end of the push rod, with the threaded rod threaded into a threaded hole.

[0011] Preferably, the bottom of the metal cylinder has an inlet / outlet hole, the push rod extends out of the metal cylinder through the inlet / outlet hole, and a sealing ring is provided inside the inlet / outlet hole.

[0012] Preferably, the push rod is movably mounted in the metal cylinder via a piston, and the lower end of the push rod is connected to the upper end of the telescopic rod via a threaded rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. In this application, when water vapor enters the steam trap body and exchanges heat with the heat exchange fins, the solution inside the metal cylinder will evaporate due to heating. Consequently, the pressure inside the metal cylinder increases, which in turn drives the piston to move downward. The downward movement of the piston causes the push rod to apply pressure to the telescopic rod, causing the sealing plug to tightly seal the drain port, thereby preventing the release of water vapor.

[0014] 2. In this application, condensate inside the pipe accumulates at the bottom of the steam trap body. When the metal cylinder is submerged in condensate, its temperature is cooled by the condensate, causing the gas inside the metal cylinder to liquefy, which in turn leads to a decrease in internal pressure. As the pressure decreases, the return spring drives the telescopic rod upward, causing the sealing plug to leave the drain outlet, thus automatically draining the accumulated condensate from the steam trap body. When the condensate level drops to the position of the heat insulation sleeve, the metal cylinder is no longer cooled by the condensate. At this point, water vapor reheats the solution inside the metal cylinder, causing the sealing plug to re-close the drain outlet, preventing the complete discharge of condensate. This process forms a water seal at the drain outlet, effectively preventing steam leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the sealing mechanism of this utility model; Figure 4 This is a schematic diagram of the drive component of this utility model.

[0016] The markings in the diagram are: 1. Steam pipe; 2. Steam trap body; 3. Drain outlet; 4. Drain outlet; 5. Sealing mechanism; 501. Mounting bracket; 502. Positioning sleeve; 503. Return spring; 504. Spring seat; 505. Threaded hole; 506. Telescopic rod; 507. Filter screen; 508. Sealing plug; 6. Drive assembly; 601. Metal cylinder; 602. Heat exchange fins; 603. Metal drip tray; 604. Heat insulation sleeve; 605. Piston; 606. Push rod; 607. Threaded rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a drainage and condensate trap for a steam sterilizer, including a steam pipe 1, a condensate trap body 2 fixedly installed on the steam pipe 1, a drain port 3 at the bottom edge of the condensate trap body 2, a drain outlet 4 at the middle of the bottom of the condensate trap body 2, a sealing mechanism 5 installed at the drain outlet 4, and a drive assembly 6 fixedly installed at the upper end of the positioning sleeve 502. Through the cooperation of the sealing mechanism 5 and the drive assembly 6, the condensate in the steam pipe 1 can be automatically drained, and steam can be prevented from overflowing through the drain outlet 4. like Figure 2 and Figure 3 As shown, the sealing mechanism 5 includes a mounting bracket 501 fixedly installed at the drain outlet 4. A positioning sleeve 502 is fixedly installed on the mounting bracket 501. A telescopic rod 506 is movably installed inside the positioning sleeve 502. A spring seat 504 is fixedly installed on the telescopic rod 506. A return spring 503 is sleeved on the telescopic rod 506. A sealing plug 508 is fixedly installed at the lower end of the telescopic rod 506, and the sealing plug 508 is vertically aligned with the drain outlet 4. A filter screen 507 is fixedly installed on the mounting bracket 501. A threaded hole 505 is opened at the upper end of the telescopic rod 506. Movable holes are opened at both the upper and lower ends of the positioning sleeve 502. The telescopic rod 506 passes through the positioning sleeve 502 through the movable holes.

[0019] Specifically, condensate in steam pipe 1 gradually accumulates at the bottom of steam trap body 2. As the condensate level rises and eventually reaches and submerges metal cylinder 601, the condensate absorbs heat from the metal cylinder 601, causing a significant drop in its temperature. This temperature drop causes liquefaction of the gas inside the metal cylinder 601, leading to a decrease in internal pressure. As the internal pressure decreases, the previously compressed return spring 503 pushes the telescopic rod 506 upward due to its elastic force. This action disengages the sealing plug 508 from drain port 4, opening the drain channel and allowing the accumulated condensate in steam trap body 2 to drain automatically.

[0020] As condensate is continuously discharged and its level gradually drops to the position of the heat insulation sleeve 604, the metal cylinder 601 will no longer be in direct contact with the condensate and therefore cannot be cooled further. At this point, the steam in the pipe will reheat the metal cylinder 601, causing the internal solution temperature to rise again. The sealing plug 508 will then return to the drain outlet 4, blocking it and preventing further condensate discharge. This creates a water seal at drain outlet 4, effectively preventing steam overflow and ensuring the normal operation and safety of the system. Through this series of automatic adjustment processes, the system can ensure timely condensate discharge while avoiding steam waste and leakage, thus improving overall efficiency and safety.

[0021] like Figure 2 and Figure 4 As shown, the drive assembly 6 includes a metal cylinder 601 fixedly installed on the upper end of the positioning sleeve 502. Heat exchange fins 602 are fixedly installed on the upper half of the metal cylinder 601, and a heat insulation sleeve 604 is fixedly installed on the lower half of the metal cylinder 601. Metal liquid receiving trays 603 are installed at intervals inside the metal cylinder 601. A piston 605 is movably installed inside the metal cylinder 601. A push rod 606 is fixedly installed at the middle position of the bottom of the piston 605. A threaded rod 607 is fixedly installed at the lower end of the push rod 606, and the threaded rod 607 is threaded into the threaded hole 505. An inlet and outlet hole is opened at the bottom of the metal cylinder 601, and the push rod 606 extends out of the metal cylinder 601 through the inlet and outlet hole. A sealing ring is provided in the inlet and outlet hole.

[0022] Specifically, when water vapor enters the internal space of the steam trap body 2, it undergoes a heat exchange process with the heat exchange fins 602. During this process, the heat carried by the water vapor is effectively transferred to the heat exchange fins 602, thereby heating the solution inside the metal cylinder 601. As heat is continuously input, the solution inside the metal cylinder 601 gradually absorbs sufficient heat energy and begins to vaporize. The vaporization of the solution results in a sharp increase in the number of gas molecules inside the metal cylinder 601, leading to a rapid rise in the pressure level inside the metal cylinder 601.

[0023] As the pressure inside the metal cylinder 601 continuously increases, this pressure change is converted into mechanical force, acting on the connected piston 605. Driven by the pressure, the piston 605 begins to move downwards. This downward movement of the piston 605 does not occur in isolation; it further drives the mechanically connected push rod 606 to move downwards as well. The downward pressing action of the push rod 606 directly acts on the telescopic rod 506, causing the telescopic rod 506 to displace accordingly under the force of the push rod 606. Ultimately, this causes the sealing plug 508 to be precisely pushed to the position of the drain port 4, sealing it tightly. This effectively prevents the leakage of water vapor.

[0024] Working principle: The metal cylinder 601 is filled with a 50% concentration of ethylene glycol aqueous solution, with a boiling point of approximately 107℃. During operation, water vapor from the steam pipe 1 enters the steam trap 2. The water vapor exchanges heat with the heat exchange fins 602, heating the solution in the metal cylinder 601 and causing it to vaporize. After vaporization, the pressure inside the metal cylinder 601 increases, forcing the piston 605 to move downwards. This downward movement of the piston 605 causes the push rod 606 to press down the telescopic rod 506, blocking the drain port 4 with the sealing plug 508, preventing water vapor from escaping. Furthermore, the condensate in the steam pipe 1 will accumulate at the bottom of the steam trap body 2. When the condensate submerges the metal cylinder 601, it will lower the temperature of the metal cylinder 601, causing the gas inside the metal cylinder 601 to liquefy and reducing the pressure inside the metal cylinder 601. After the pressure inside the metal cylinder 601 decreases, the return spring 503 will push the telescopic rod 506 upward, causing the sealing plug 508 to disengage from the drain port 4, automatically draining the condensate accumulated in the steam trap body 2. When the condensate level drops to the heat insulation sleeve 604, the metal cylinder 601 cannot be cooled by the condensate, and the steam will reheat the solution inside the metal cylinder 601, causing the sealing plug 508 to block the drain port 4 again. After blocking the drain port 3, the condensate level will rise again, cooling the metal cylinder 601 once more. This process is repeated continuously to achieve the purpose of blocking gas and draining water.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A drain condensate device for a steam sterilizer, comprising a steam pipe (1), a drain valve body (2) fixedly installed on the steam pipe (1), a drain outlet (3) being provided at the bottom edge of the drain valve body (2), and a drain outlet (4) being provided at the middle of the bottom of the drain valve body (2), characterized in that: A sealing mechanism (5) is installed at the drain outlet (4). The sealing mechanism (5) includes a mounting bracket (501) fixedly installed at the drain outlet (4). A positioning sleeve (502) is fixedly installed on the mounting bracket (501). A telescopic rod (506) is movably installed inside the positioning sleeve (502). A spring seat (504) is fixedly installed on the telescopic rod (506). A reset spring (503) is sleeved on the telescopic rod (506). A sealing plug (508) is fixedly installed at the lower end of the telescopic rod (506), and the sealing plug (508) is vertically aligned with the drain outlet (4). A drive assembly (6) is fixedly installed at the upper end of the positioning sleeve (502).

2. The drainage device for a steam sterilizer according to claim 1, characterized in that: A filter screen (507) is fixedly installed on the mounting bracket (501), and a threaded hole (505) is opened at the upper end of the telescopic rod (506).

3. The drainage device for a steam sterilizer according to claim 2, characterized in that: The positioning sleeve (502) has movable holes at both the upper and lower ends, and the telescopic rod (506) passes through the positioning sleeve (502) through the movable holes.

4. The drainage device for a steam sterilizer according to claim 3, characterized in that: The telescopic rod (506) is movably installed inside the positioning sleeve (502) via the spring seat (504). One end of the reset spring (503) is connected to the bottom of the positioning sleeve (502), and the other end of the reset spring (503) is connected to the spring seat (504). The sealing plug (508) is movably installed above the drain outlet (4) via the telescopic rod (506).

5. The drainage device for a steam sterilizer according to claim 4, characterized in that: The drive assembly (6) includes a metal cylinder (601) fixedly installed on the upper end of the positioning sleeve (502). The upper half of the metal cylinder (601) is fixedly installed with heat exchange fins (602), and the lower half of the metal cylinder (601) is fixedly installed with a heat insulation sleeve (604). Metal liquid receiving trays (603) are installed at intervals inside the metal cylinder (601). A piston (605) is movably installed inside the metal cylinder (601). A push rod (606) is fixedly installed at the middle position of the bottom of the piston (605). A threaded rod (607) is fixedly installed at the lower end of the push rod (606), and the threaded rod (607) is threaded into the threaded hole (505).

6. The drainage device for a steam sterilizer according to claim 5, characterized in that: The bottom of the metal cylinder (601) is provided with an inlet and outlet hole, and the push rod (606) extends out of the metal cylinder (601) through the inlet and outlet hole, and a sealing ring is provided in the inlet and outlet hole.

7. The drainage device for a steam sterilizer according to claim 6, characterized in that: The push rod (606) is movably installed in the metal cylinder (601) via the piston (605), and the lower end of the push rod (606) is connected to the upper end of the telescopic rod (506) via a threaded rod (607).

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