Portable pressure steam sterilizer

Abstract

The utility model provides a hand-held pressure steam sterilizer which comprises a heater and an outer cylinder body, the top end of the outer cylinder body is provided with an opening, a sealing cover is arranged at the opening of the outer cylinder body, an exhaust assembly is arranged on the sealing cover, and the exhaust assembly comprises an exhaust valve body, an end cover and a movable sleeve. One end of the exhaust valve body penetrates through the sealing cover, a via hole is formed in the side wall of the exhaust valve body, an exhaust hole is formed in the end cover, the exhaust valve body is sleeved with the movable sleeve, an air guide channel communicated with the exhaust hole is formed in the movable sleeve, and a wedge block is further arranged on the sealing cover. The wedge-shaped block abuts against the movable sleeve and drives the movable sleeve to move in the vertical direction so that the end, away from the exhaust hole, of the air guide channel can be communicated with or staggered from the via hole, and an operation rod is arranged on the wedge-shaped block. According to the utility model, the technical problem that the existing vent valve is easily scalded by high-temperature water vapor during manual operation is solved, and the technical effects of preventing an operator from being in contact with the high-temperature water vapor in the process of operating the sterilizer and improving the safety of equipment are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sterilization equipment, in particular to a portable pressure steam sterilizer. Background Art

[0002] Pressure steam sterilizer is a device that uses saturated pressure steam to quickly and reliably disinfect and sterilize items. It is suitable for sterilizing surgical instruments, dressings, glassware, rubber products, food, liquid medicine, culture medium and other items in medical, scientific research, food and other units.

[0003] The Chinese utility model patent with the announcement number CN211410248U discloses a portable pressure steam sterilizer, comprising an outer shell with an upper opening, an inner shell disposed within the outer shell and also having an upper opening, a cover disposed at the upper opening of the outer shell to seal the outer shell, an electric heating tube disposed within the outer shell, a steam release valve disposed on the cover, and a lifting assembly. A gap is formed between the bottom of the inner shell and the outer shell, forming a cavity filled with water, in which the electric heating tube is disposed. A control panel is disposed on the outer side of the outer shell for controlling the electric heating tube. The inner shell comprises side panels and a bottom panel, the side panels being connected to the inner wall of the outer shell. The bottom panel is provided with a plurality of vents disposed horizontally in the side panels and slidably connected thereto. The lifting assembly is disposed between the side panels and the side wall of the outer shell to drive the bottom panel to slide vertically. The portable pressure steam sterilizer, by providing a lifting assembly to drive the bottom panel to rise and fall, can more conveniently collect items and reduce the risk of burns.

[0004] During the use of the above-mentioned portable pressure steam sterilizer, it is necessary to operate the air release valve to close the air release valve after the gas in the inner shell is discharged, and it is necessary to open the air release valve to partially discharge the high-temperature water vapor in the inner shell during the sterilization process and after the sterilization is completed. Since some high-temperature water vapor will be discharged at the air release valve during the operation, the operator's hands will come into contact with the high-temperature water vapor when manually pulling the air release valve, which can easily cause burns. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a portable pressure steam sterilizer, which solves the problem in the prior art that a manually operated air release valve is easily scalded by high-temperature steam.

[0006] The cam is secured to the upper edge of the airtight container and is accessible through the outlet port, and the cam is secured to the upper edge of the airtight container by means of a camming mechanism. The camming mechanism is secured to the upper edge of the airtight container and is accessible through the camming mechanism.

[0007] Furthermore, a threaded rod is provided at one end of the exhaust valve body away from the sealing cover, and a first threaded hole matching the threaded rod is provided on the end cover.

[0008] Furthermore, an annular groove is provided on the end cover, the length direction of the annular groove is vertical, and part of the movable sleeve extends into the annular groove and fits against the inner wall of the annular groove.

[0009] Furthermore, a first spring is provided in the annular groove, and the first spring abuts against the movable sleeve and drives the movable sleeve to move toward the sealing cover.

[0010] Furthermore, the sealing cover is provided with a slide groove, the length direction of the slide groove is consistent with the moving direction of the wedge block and the wedge block is movably arranged in the slide groove.

[0011] Furthermore, a guide rod is provided in the slide groove, the length direction of the guide rod is consistent with the length direction of the slide groove, and a guide hole matching with the guide rod is provided on the wedge block.

[0012] Furthermore, a second spring is sleeved on the guide rod, and opposite ends of the second spring in the expansion and contraction direction are respectively in contact with the sealing cover and the wedge block.

[0013] Furthermore, the operating rod is rotatably connected to the wedge block and a clamping plate is provided at one end of the operating rod away from the wedge block. The sealing cover is also provided with a limit seat, and two clamping grooves are provided on the limit seat at intervals along the moving direction of the wedge block, and the clamping plate cooperates with one of the clamping grooves.

[0014] Furthermore, the outer cylinder is provided with a rotatable rotating handle, and the sealing cover can be raised and lowered on the rotating handle. The rotating handle is provided with a second threaded hole and a screw rod matching the second threaded hole. The axial direction of the screw rod is vertical and one end of the screw rod is rotatably connected to the sealing cover.

[0015] Furthermore, a detachable inner cylinder is provided in the outer cylinder, a plurality of through holes are provided at intervals on the inner cylinder, and a handle is provided at one end of the inner cylinder close to the opening of the outer cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects: by adopting an exhaust assembly provided on the sealing cover to release the high-temperature water vapor in the outer cylinder, when the high-temperature water vapor needs to be discharged, the operator pushes and pulls the operating rod to move the wedge block so that the movable sleeve moves under the drive of the wedge block. When the movable sleeve is moved to the position where the air guide channel is connected to the through hole, the high-temperature water vapor in the outer cylinder passes through the through hole and moves along the air guide channel into the end cover and is discharged from the exhaust hole. When the exhaust needs to be stopped, the operator operates the operating rod to move the wedge block in the opposite direction so that the movable sleeve moves under the drive of the wedge block, so that the movable sleeve moves to a position where the air guide channel and the through hole are staggered. At this time, the movable sleeve closes the through hole and blocks the high-temperature water vapor in the outer cylinder from being discharged. During the exhaust and exhaust stopping process, the operator only needs to operate the operating rod without directly operating the exhaust assembly, thereby reducing the contact between the operator and the discharged high-temperature water vapor. It solves the technical problem that the existing air release valve is easily scalded by high-temperature water vapor when manually operated, and produces the technical effect of avoiding contact between the operator and high-temperature water vapor during the operation of the sterilizer and improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a portable pressure steam sterilizer according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of a portable pressure steam sterilizer according to one embodiment of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a partial structural diagram of a portable pressure steam sterilizer according to an embodiment of the present invention;

[0021] Figure 5 This is a structural schematic diagram of a portable pressure steam sterilizer according to an embodiment of the present invention when the sealing cover is opened.

[0022] In the above drawings: 1. Outer cylinder; 2. Heater; 3. Sealing cover; 31. Wedge block; 32. Operating rod; 33. Slide groove; 34. Guide rod; 35. Second spring; 36. Clamping plate; 37. Guide block; 4. Exhaust assembly; 41. Exhaust valve body; 42. End cover; 43. Movable sleeve; 44. Through hole; 45. Exhaust hole; 46. Air guide channel; 47. Threaded rod; 48. Annular groove; 49. First spring; 5. Limit seat; 51. Clamping groove; 6. Rotating handle; 61. Screw rod; 62. Guide groove; 63. Handwheel; 7. Inner cylinder; 71. Through hole; 72. Handle; 8. Pressure gauge; 9. Safety valve. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 5 As shown, the embodiment of the present invention provides a portable pressure steam sterilizer for sterilizing instruments, dressings, glassware, rubber products, food, liquid medicine, culture medium and other items during production, processing and testing experiments.

[0025] Please refer to Figure 1 、 Figure 2 and Figure 3The portable pressure steam sterilizer includes a heater 2 and an outer cylinder 1 arranged on the heater 2. The top of the outer cylinder 1 has an opening and a sealing cover 3 is provided at the opening of the outer cylinder 1. The sealing cover 3 is used to seal the opening of the outer cylinder 1 so that the high-temperature water vapor generated when the heater 2 heats the water in the outer cylinder 1 is retained in the outer cylinder 1. The sealing cover 3 is provided with an exhaust assembly 4, which includes an exhaust valve body 41, an end cover 42 and a movable sleeve 43. One end of the exhaust valve body 41 passes through the sealing cover 3 and a through hole 44 communicating with the outer cylinder 1 is provided on the side wall of the exhaust valve body 41. The end cover 42 is connected to the end of the exhaust valve body 41 away from the sealing cover 3 and an exhaust hole 45 is provided on the end cover 42. The movable sleeve 43 is sleeved on the exhaust valve body 41 and is located between the sealing cover 3 and the end cover 42. The movable sleeve 43 can move in the vertical direction on the exhaust valve body 41 and the movable sleeve 43 is provided with an air guide channel 46 communicating with the exhaust hole 45. The sealing cover 3 is also provided with a wedge block 31 that can move in the horizontal direction. The wedge block 31 abuts against the movable sleeve 43 and drives the movable sleeve 43 to move in the vertical direction so that the end of the air guide channel 46 away from the exhaust hole 45 is connected to or staggered with the through hole 44. When the air guide channel 46 is connected with the exhaust hole 45, the high-temperature water vapor in the outer cylinder 1 can be discharged into the external environment through the through hole 44, the air guide channel 46 and the exhaust hole 45 in sequence. When the air guide channel 46 is staggered with the exhaust hole 45, the movable sleeve 43 closes the through hole 44. An operating rod 32 is provided on the wedge block 31 and the operating rod 32 extends in the direction away from the exhaust component 4. The wedge block 31 can be moved and the position of the movable sleeve 43 can be adjusted by pushing and pulling the operating rod 32.

[0026] Specifically, when it is necessary to discharge the high-temperature water vapor in the outer cylinder 1 during the sterilization process using the portable pressure steam sterilizer provided in this embodiment, the operator pushes and pulls the operating rod 32 to move the wedge block 31 so that the movable sleeve 43 rises in the vertical direction under the drive of the wedge block 31, so as to move the movable sleeve 43 to a position where the air guide channel 46 is connected to the through hole 44. At this time, the high-temperature water vapor in the outer cylinder 1 passes through the through hole 44 and moves along the air guide channel 46 into the end cover 42 and then is discharged from the exhaust hole 45, so that some high-temperature water vapor can be released when the pressure in the outer cylinder 1 is too high or the high-temperature water vapor in the outer cylinder 1 can be discharged after the sterilization is completed; when it is necessary to stop exhausting, the operator operates the operating rod 32 to move the movable sleeve 43 in the reverse direction so that it can descend in the vertical direction. The movable sleeve 43 descends to a position where the air guide channel 46 is offset from the through hole 44. At this time, the movable sleeve 43 closes the through hole 44 and prevents the high-temperature water vapor in the outer cylinder 1 from being discharged. During the exhaust and stop process of the portable pressure steam sterilizer provided in this embodiment, the operator only needs to operate the operating lever 32 without directly contacting the operating exhaust component 4, thereby reducing the operator's contact with the exhausted high-temperature water vapor, avoiding the operator from being burned by contact with high-temperature water vapor during the operation of the portable pressure steam sterilizer, and improving the safety of the equipment.

[0027] like Figure 2 and Figure 3 As shown, a threaded rod 47 is provided at one end of the exhaust valve body 41 away from the sealing cover 3, and a first threaded hole is provided on the end cap 42 to cooperate with the threaded rod 47. The end cap 42 and the exhaust valve body 41 are assembled together through the threaded hole and the threaded rod 47, ensuring a reliable connection between the sealing cover 3 and the exhaust valve body 41, preventing the sealing cover 3 from detaching from the exhaust valve body 41 when high-temperature water vapor in the outer cylinder 1 enters the sealing cover 3, thereby improving the structural stability of the exhaust assembly 4.

[0028] Please refer to Figure 3 The end cover 42 is provided with an annular groove 48. The length direction of the annular groove 48 is vertical, and a portion of the movable sleeve 43 extends into the annular groove 48 and abuts against the inner wall of the annular groove 48. The annular groove 48 provided on the end cover 42 is used to accommodate a portion of the movable sleeve 43. When the movable sleeve 43 moves in the vertical direction under the drive of the wedge block 31, the movable sleeve 43 moves within the annular groove 48, thereby ensuring a tight connection between the movable sleeve 43 and the end cover 42 and preventing high-temperature water vapor from leaking through the gap between the movable sleeve 43 and the end cover 42.

[0029] In detail, a first spring 49 is provided in the annular groove 48 . The first spring 49 abuts against the movable sleeve 43 and drives the movable sleeve 43 to move toward the sealing cover 3 . The first spring 49 arranged in the annular groove 48 is used to drive the movable sleeve 43 to reset. When the movable sleeve 43 rises in the vertical direction to the position where the air guide channel 46 is connected to the through hole 44 under the drive of the wedge block 31, the first spring 49 is further compressed. At this time, the movable sleeve 43 is maintained in the position where the air guide channel 46 is connected to the through hole 44 under the support of the wedge block 31, so that the high-temperature water vapor in the outer cylinder 1 can be continuously discharged. When the wedge block 31 moves in the direction, the first spring 49 restores its original length and pushes the movable sleeve 43 down in the vertical direction through the elastic force provided by the first spring 49, so that the movable sleeve 43 can quickly move to the position where the air guide channel 46 and the through hole 44 are staggered, and the elastic force provided by the first spring 49 keeps the movable sleeve 43 at the staggered position between the air guide channel and the through hole 44, thereby improving the reliability of the exhaust component 4.

[0030] Please combine Figure 1 and Figure 4 The sealing cover 3 is provided with a slide groove 33, the length direction of which is consistent with the movement direction of the wedge block 31, and the wedge block 31 is movably disposed in the slide groove 33. The slide groove 33 is used to guide the movement of the wedge block 31 on the sealing cover 3, prevent the wedge block 31 from deviating from the preset direction during movement, and ensure that the wedge block 31 remains in contact with the movable sleeve 43 during movement, thereby improving the stability of the exhaust assembly 4 during operation.

[0031] Specifically, a guide rod 34 is provided in the chute 33. The length of the guide rod 34 is aligned with that of the chute 33, and a guide hole is provided in the wedge block 31 to cooperate with the guide rod 34. The cooperation between the guide rod 34 and the guide hole secures the wedge block 31 to the chute 33, preventing the wedge block 31 from escaping from the chute 33 during movement and ensuring that the wedge block 31 remains on the sealing cover 3, thereby ensuring the overall structural stability of the portable pressure steam sterilizer.

[0032] like Figure 4As shown, in this embodiment, a second spring 35 is sleeved on the guide rod 34, and the opposite ends of the second spring 35 in the direction of extension and contraction respectively abut against the sealing cover 3 and the wedge block 31. When the operator pulls the operating rod 32 to move the wedge block 31, causing the movable sleeve 43 to rise for exhaust, the second spring 35 is further compressed as the wedge block 31 moves. When it is necessary to close the exhaust assembly 4, the operator releases the operating rod 32 and the second spring 35 returns to its original length. The elastic force provided by the second spring 35 drives the wedge block 31 to return to its original position, allowing the movable sleeve 43 to descend vertically to block the discharge of high-temperature water vapor. The second spring 35 also abuts against the wedge block 31, keeping it in the position that closes the exhaust assembly 4, preventing the wedge block 31 from unexpectedly moving and causing high-temperature water vapor to leak out.

[0033] like Figure 4 and Figure 5 As shown, the operating rod 32 is rotatably connected to the wedge block 31, and a clamping plate 36 is provided at one end of the operating rod 32 away from the wedge block 31. The sealing cover 3 is also provided with a limit seat 5. Two slots 51 are provided on the limit seat 5 along the moving direction of the wedge block 31, and the clamping plate 36 cooperates with one of the slots 51. When the operator pushes and pulls the operating rod 32 to move the wedge block 31 to the open or closed position of the exhaust assembly 4, the clamping plate 36 aligns with one of the slots 51. At this time, the operating rod 32 is rotated to place the clamping plate 36 into the corresponding slot 51. The cooperation between the clamping plate 36 and the slot 51 can keep the wedge block 31 in the position that opens or closes the exhaust assembly 4, avoiding unintended movement of the wedge block 31 during the exhaust process. At the same time, the operator does not need to keep pulling the operating rod 32 during the exhaust process, which facilitates the operator to use the portable pressure steam sterilizer.

[0034] Please refer to Figure 1 and Figure 5The outer cylinder 1 is provided with a rotatable rotating handle 6, and the sealing cover 3 can be raised and lowered on the rotating handle 6. The rotating handle 6 is provided with a second threaded hole and a screw rod 61 that cooperates with the second threaded hole. The axial direction of the screw rod 61 is vertical and one end of the screw rod 61 is rotatably connected to the sealing cover 3. The sealing cover 3 can be moved by rotating the rotating handle 6 so that the sealing cover 3 is close to or away from the opening of the outer cylinder 1, so as to open or close the outer cylinder 1. After the sealing cover 3 is moved to just above the opening of the outer cylinder 1, the screw rod 61 is operated to rotate so that the sealing cover 3 descends in the vertical direction and approaches the outer cylinder 1 until it abuts against the outer cylinder 1, so that the opening of the outer cylinder 1 can be sealed to prevent high-temperature water vapor from leaking from between the sealing cover 3 and the outer cylinder 1 during sterilization. When the outer cylinder 1 needs to be opened, the screw rod 61 can be rotated in the opposite direction to move the sealing cover 3 away from the outer cylinder 1 in the vertical direction. The operation is simple, and a hand wheel 63 is provided at the end of the screw rod 61. The hand wheel 63 can be operated to conveniently rotate the screw rod 61 and adjust the position of the sealing cover 3.

[0035] Specifically, the rotating handle 6 is provided with a guide groove 62, the length direction of which is vertical, and the sealing cover 3 is provided with a guide block 37 that cooperates with the guide groove 62. The provision of the guide groove 62 on the rotating handle 6 and the cooperation of the guide block 37 on the sealing cover 3 can limit the movement direction of the sealing cover 3 on the rotating handle 6, thereby preventing the sealing cover 3 from deviating from the preset direction when closing the outer cylinder 1, thereby preventing a gap from forming between the sealing cover 3 and the outer cylinder 1, and ensuring a stable fit between the sealing cover 3 and the outer cylinder 1.

[0036] Please combine Figure 2 and Figure 5A detachable inner cylinder 7 is provided in the outer cylinder 1 , a plurality of through holes 71 are provided at intervals on the inner cylinder 7 and a handle 72 is provided at one end of the inner cylinder 7 close to the opening of the outer cylinder 1 . The inner cylinder 7 arranged in the outer cylinder 1 is used to accommodate items to be sterilized. When the portable pressure steam sterilizer provided in this embodiment is used for sterilization, a certain amount of clean water is first poured into the outer cylinder 1, and then the inner cylinder 7 containing the items to be sterilized is placed in the outer cylinder 1. At this time, the bottom surface of the inner cylinder 7 is separated from the liquid level of the clean water by a certain distance. After closing the sealing cover 3, the heater 2 is started to heat the clean water in the outer cylinder 1 to generate high-temperature water vapor. The high-temperature water vapor passes through the through hole 71 on the inner cylinder 7 and contacts the items in the inner cylinder 7 to sterilize. After the sterilization is completed, the exhaust component 4 is first opened to discharge the high-temperature water vapor in the outer cylinder 1 so that the air pressure in the outer cylinder 1 drops to a normal range. Then the sealing cover 3 is opened and the inner cylinder 7 together with the sterilized items can be taken out. The operator can easily take out the inner cylinder 7 by pulling the handle 72 on the inner cylinder 7.

[0037] Preferably, a pressure gauge 8 and a safety valve 9 are also provided on the sealing cover 3. The pressure gauge 8 is used to measure the pressure in the outer cylinder 1 during the sterilization process, so that the operator can understand the operating status of the portable pressure steam sterilizer and open the sealing cover 3 when the pressure in the outer cylinder 1 is within a safe range. The safety valve 9 is used to discharge part of the high-temperature water vapor in the outer cylinder 1 when the pressure in the outer cylinder 1 is higher than the safety range, so that the pressure in the outer cylinder 1 drops to a safe range, thereby preventing safety accidents during the use of the portable pressure steam sterilizer.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A portable pressure steam sterilizer comprising a heater and an outer cylinder disposed on the heater, wherein the top end of the outer cylinder has an opening and a sealing cover is provided at the opening of the outer cylinder, characterized in that: The sealing cover is provided with an exhaust assembly, which includes an exhaust valve body, an end cover and a movable sleeve. One end of the exhaust valve body passes through the sealing cover and the side wall of the exhaust valve body is provided with a through hole connected to the outer cylinder body. The end cover is connected to the end of the exhaust valve body away from the sealing cover and the end cover is provided with an exhaust hole. The movable sleeve is provided on the exhaust valve body and is located between the sealing cover and the end cover. The movable sleeve can move in a vertical direction on the exhaust valve body and the movable sleeve is provided with an air guide channel connected to the exhaust hole. The sealing cover is also provided with a wedge block that can move in a horizontal direction. The wedge block abuts against the movable sleeve and drives the movable sleeve to move in a vertical direction so that the air guide channel is away from the end of the exhaust hole and is connected to or staggered with the through hole. An operating rod is provided on the wedge block and the operating rod extends in a direction away from the exhaust assembly.

2. A portable pressure steam sterilizer according to claim 1, characterized in that: A threaded rod is provided at one end of the exhaust valve body away from the sealing cover, and a first threaded hole matched with the threaded rod is provided on the end cover.

3. The portable pressure steam sterilizer according to claim 1, characterized in that: An annular groove is provided on the end cover, the length direction of the annular groove is vertical, and part of the movable sleeve extends into the annular groove and fits against the inner wall of the annular groove.

4. A portable pressure steam sterilizer according to claim 3, characterized in that: A first spring is provided in the annular groove. The first spring abuts against the movable sleeve and drives the movable sleeve to move toward the sealing cover.

5. The portable pressure steam sterilizer according to claim 1, characterized in that: The sealing cover is provided with a slide groove, the length direction of the slide groove is consistent with the moving direction of the wedge block and the wedge block is movably arranged in the slide groove.

6. A portable pressure steam sterilizer according to claim 5, characterized in that: A guide rod is provided in the slide groove, the length direction of the guide rod is consistent with the length direction of the slide groove, and a guide hole matching the guide rod is provided on the wedge block.

7. A portable pressure steam sterilizer according to claim 6, characterized in that: A second spring is sleeved on the guide rod, and opposite ends of the second spring in the expansion and contraction direction are respectively in contact with the sealing cover and the wedge block.

8. The portable pressure steam sterilizer according to claim 1, characterized in that: The operating rod is rotatably connected to the wedge block and a clamping plate is provided at one end of the operating rod away from the wedge block. The sealing cover is also provided with a limit seat. Two clamping grooves are provided on the limit seat at intervals along the moving direction of the wedge block and the clamping plate cooperates with one of the clamping grooves.

9. The portable pressure steam sterilizer according to claim 1, characterized in that: The outer cylinder is provided with a rotatable rotating handle, and the sealing cover can be raised and lowered on the rotating handle. The rotating handle is provided with a second threaded hole and a screw rod matching the second threaded hole. The axial direction of the screw rod is vertical and one end of the screw rod is rotatably connected to the sealing cover.

10. The portable pressure steam sterilizer according to claim 1, characterized in that: A detachable inner cylinder is provided in the outer cylinder. A plurality of through holes are provided at intervals on the inner cylinder, and a handle is provided at one end of the inner cylinder close to the opening of the outer cylinder.

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