Door body limiting mechanism of sterilizer
By introducing a pressure lock assembly and micro switch design into the sterilizer door body limiting mechanism, the lock core is in place confirmation problem is solved, ensuring that the sterilizer starts under safe conditions, improving safety and reducing costs.
Patent Information
- Application Number
- CN202420778089.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The existing sterilizer door limit mechanism cannot determine whether the lock core has moved into place, which may cause the sterilizer to start working without the lock core being in place, which poses a safety hazard.
A sterilizer door body limiting mechanism including a pressure lock assembly and a micro switch is designed. The pressure lock assembly consists of a lock body, a lock core, a cavity and a micro switch. The micro switch is located on the moving path of the lock core and is connected to the sterilizer control system. When the lock core extends out, the micro switch is pressed, and the output signal indicates that the lock core is in place.
The signal of the micro switch confirms that the lock core is in place to ensure that the sterilizer starts working only when the door body cannot be opened, which improves safety and opens the pipeline through the control valve body to maintain the lock core protrusion, reducing operating costs.
Smart Images
Figure CN222605060U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sterilizers, in particular to a door limiting mechanism of a sterilizer. Background Art
[0002] The sterilizer is one of the main sterilization equipment in the medicine and pharmaceutical industry. It occupies an important production position in the medicine and pharmaceutical industry. Its main working principle is to pass high-pressure steam into the sterilizer to achieve the sterilization effect. It is widely used in medical and pharmaceutical fields. A door body is set on the sterilizer. When the door body is closed, the door lock is manually moved to prevent the door body from opening. The door body can only be opened after the door lock is opened. The sterilizer generally generates high-pressure steam by heating. During the working heating process, the inside of the sterilizer is in a high temperature and high pressure state. Therefore, the sterilizer door body cannot be opened at will at this time. Therefore, a door body limit mechanism is set on the sterilizer, and generally the purpose of limiting the opening of the door body is achieved by limiting the opening of the door lock. At present, a movable lock core is set in the door body limit mechanism of some sterilizers. The lock core is driven to extend by a power source, and the door body is restricted from opening when the lock core is extended. However, in the current sterilizer door limiting mechanisms, after the power source provides power to the lock core, it is impossible to determine whether the lock core has moved into place, and therefore it is impossible to determine whether the lock core has effectively restricted the opening of the door. This may cause the sterilizer to start working when the lock core is not in place, posing certain safety hazards. Utility Model Content
[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a sterilizer door limiting mechanism to solve the technical problem that the sterilizer door limiting mechanism in the prior art cannot determine whether the lock core has been moved into place, which may cause the sterilizer to start working when the lock core is not in place.
[0004] In order to solve the above technical problems, the utility model provides a sterilizer door limiting mechanism, including a pressure lock assembly and a micro switch. The pressure lock assembly includes a lock body and a lock core. A cavity is provided in the lock body. The lock core is movably connected in the cavity. The cavity forms an opening at one end of the lock body for the lock core to extend out. The micro switch is connected to the pressure lock assembly and is located on the moving path of the lock core. The micro switch is electrically connected to the sterilizer control system.
[0005] After adopting the above structure, the sterilizer door limit mechanism of the utility model has the following advantages: when the lock core extends from the opening, it plays a role in limiting the opening of the sterilizer door. Since the microswitch is located on the moving path of the lock core, the lock core will press the microswitch at this time, and the microswitch will output a signal to the sterilizer control system, indicating that the lock core is in place and the sterilizer door cannot be opened. Only then will the sterilizer start working, ensuring that the sterilizer starts working only when the door cannot be opened, thereby improving safety.
[0006] As an improvement, the utility model also includes a sterilizer body and a door lock drive mechanism. The door lock drive mechanism is movably connected to the sterilizer body and is used to drive the opening and closing of the door lock. The pressure lock assembly is connected to the sterilizer body. When the lock core extends from the opening, the lock core is located on the moving path of the door lock drive mechanism. With this structure, the opening and closing of the door lock are controlled by controlling the door lock drive mechanism to switch between two states. During the sterilization process, the lock core is located on the moving path of the door lock drive mechanism. Therefore, the door lock drive mechanism cannot switch from one state to another, thereby achieving the purpose of limiting the opening of the door lock and the door body.
[0007] As an improvement, the pressure lock assembly also includes a deformable diaphragm, and a pressure chamber is also provided in the lock body. The cavity and the pressure chamber are distributed in the left and right directions. The diaphragm is connected to the lock body and separates the cavity and the pressure chamber. The lock core is movably connected in the cavity along the left and right directions. The cavity forms an opening at the left end of the lock body for the lock core to extend out. The lock body is connected to a pump body connected to the pressure chamber, and the lock core is located on the deformation path of the diaphragm to the left. With this structure, the pump body provides pressure to the pressure chamber, forcing the diaphragm to deform to the left and push the lock core to extend out, thereby achieving the purpose of limiting the opening of the door lock.
[0008] As an improvement, a connecting pipe is connected to the right end of the lock body, the pressure chamber extends into and through the connecting pipe, and the pump body is connected to the connecting pipe through a pipeline; with this structure, the lock body is easily connected to the pipeline by setting up the connecting pipe.
[0009] As an improvement, a valve body for controlling the on and off of the pipeline is connected in series on the pipeline, and the valve body is electrically connected to the sterilizer control system. With this structure, when the pipeline is connected, the pump body drives the lock core to extend. After the lock core is extended and the micro switch is pressed, the micro switch outputs a signal to the sterilizer control system. The sterilizer control system controls the valve body to disconnect the pipeline, so that the pressure lock assembly is in a pressure-maintaining state, maintaining the lock core extended. The pump body does not need to output pressure all the time, thereby reducing costs.
[0010] As an improvement, a first accommodating hole connected to the cavity is provided in the lock body, the first accommodating hole forms a first abutment surface in the lock body, a limiting portion is connected to the side wall of the lock core, and the first abutment surface is located on the moving path of the limiting portion; by adopting this structure, the distance that the lock core moves to the left is limited by the first abutment surface and the limiting portion, thereby preventing the lock core from separating from the lock body.
[0011] As an improvement, the micro switch is connected to the lock body and is located on the moving path of the limit part. With this structure, when the lock core moves, the limit part moves synchronously with the lock core, and the micro switch is pressed by the limit part.
[0012] As an improvement, the pressure lock assembly is connected to a reset assembly for driving the lock core to reset. A second accommodating hole connected to the cavity is provided in the lock body. The second accommodating hole forms a second abutment surface in the lock body. A limiting portion is connected to the side wall of the lock core. The reset assembly includes a spring sleeved on the lock core, and both ends of the spring respectively abut against the second abutment surface and the limiting portion. With this structure, after the lock core moves to the left, the spring is compressed. When the pressure disappears, the compressed spring drives the lock core to move to the right and retract to reset. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a sectional view of the whole of the utility model.
[0014] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the utility model.
[0015] Figure numerals: 1. micro switch; 2. pressure lock assembly; 21. lock body; 22. lock core; 23. diaphragm; 3. cavity; 4. opening; 5. pressure chamber; 6. connecting pipe; 7. first accommodating hole; 8. first abutting surface; 9. limiting portion; 10. second accommodating hole; 11. second abutting surface; 12. spring. DETAILED DESCRIPTION
[0016] The door limiting mechanism of the sterilizer of the utility model is described in detail below with reference to the accompanying drawings.
[0017] like Figure 1 to Figure 2 As shown, a sterilizer door limiting mechanism includes a micro switch 1 and a pressure lock assembly 2. The pressure lock assembly 2 includes a lock body 21 and a lock core 22. A cavity 3 is provided in the lock body 21. The lock core 22 is movably connected in the cavity 3. The cavity 3 forms an opening 4 at one end of the lock body 21 for the lock core 22 to extend out. The micro switch 1 is connected to the pressure lock assembly 2 and is located on the moving path of the lock core 22. The micro switch 1 is electrically connected to the sterilizer control system.
[0018] The utility model also includes a sterilizer body and a door lock driving mechanism. The door lock driving mechanism is movably connected to the sterilizer body and is used to drive the opening and closing of the door lock. The pressure lock assembly 2 is connected to the sterilizer body. When the lock core 22 extends from the opening 4, the lock core 22 is located on the moving path of the door lock driving mechanism; specifically, the door lock driving mechanism includes a handle rotatably connected to the sterilizer body. The door lock is switched between open and closed by rotating the handle. When the handle is located at any position between the two positions, the door lock and the door body will not be opened or closed. Its specific structure and working principle are all existing technologies and will not be repeated here; the lock core 22 is located on the moving path of the handle.
[0019] like Figure 1As shown, the pressure lock assembly 2 also includes a deformable diaphragm 23, and a pressure chamber 5 is also provided in the lock body 21. The cavity 3 and the pressure chamber 5 are distributed in the left and right directions. The diaphragm 23 is connected to the lock body 21 and separates the cavity 3 and the pressure chamber 5. The left side of the diaphragm 23 contacts the lock core 22, and the right side contacts the pressure chamber 5. The lock core 22 is movably connected in the cavity 3 along the left and right directions. The cavity 3 forms an opening 4 for the lock core 22 to extend out at the left end of the lock body 21. The lock body 21 is connected to a pump body connected to the pressure chamber 5, and the lock core 22 is located on the deformation path of the diaphragm 23 deforming to the left; specifically, a connecting pipe 6 is connected to the right end of the lock body 21, the pressure chamber 5 extends into the connecting pipe 6 and passes through the connecting pipe 6, the pump body is connected to the connecting pipe 6 through a pipeline, and a valve body for controlling the on-off of the pipeline is connected in series on the pipeline, the valve body is electrically connected to the sterilizer control system, and the valve body is a normally closed valve. In this embodiment, the connecting pipe 6 is arranged downward, so the pressure chamber 5 in the connecting pipe 6 is also arranged downward. One end of the pipeline is connected to the connecting pipe 6, specifically, it is sleeved on the lower end of the connecting pipe 6, and the other end is connected to the pump body, which is a vacuum pump.
[0020] like Figure 1 As shown, a first receiving hole 7 communicating with the cavity 3 is provided in the lock body 21, and the first receiving hole 7 forms a first abutting surface 8 in the lock body 21. A limiting portion 9 is connected to the side wall of the lock core 22, and the first abutting surface 8 is located on the moving path of the limiting portion 9; a second receiving hole 10 communicating with the cavity 3 is provided in the lock body 21, and the second receiving hole 10 forms a second abutting surface 11 in the lock body 21, and the limiting portion 9 is connected to the side wall of the lock core 22. A reset component for driving the lock core 22 to reset is connected to the pressure lock assembly 2, and the reset component The component includes a spring 12 sleeved on the lock core 22, and the two ends of the spring 12 are respectively against the second abutting surface 11 and the limiting portion 9; specifically, the second receiving hole 10 is located on the left side of the first receiving hole 7, and the second receiving hole 10 and the first receiving hole 7 are both round holes, and the inner diameter of the second receiving hole 10 is smaller than that of the first receiving hole 7, and the limiting portion 9 is annular and integrally formed with the lock core 22, and the limiting portion 9 is located in the first receiving hole 7, and the left half of the spring 12 is located in the second receiving hole 10, and the right half is located in the first receiving hole 7. The micro switch 1 is connected to the lock body 21, and its input switch part is located in the first receiving hole 7 and on the moving path of the limiting portion 9. After the lock core 22 moves a distance to the left, the limiting portion 9 contacts the input switch.
[0021] In the present invention, the pump body provides positive pressure to the pressure chamber 5, and the diaphragm 23 is deformed to the left, so that the lock core 22 extends from the opening 4. At this time, the lock core 22 plays a role in limiting the opening of the sterilizer door. Since the micro switch 1 is located on the moving path of the lock core 22, the lock core 22 (limiting portion 9) will press the micro switch 1 at this time, and the micro switch 1 outputs a signal to the sterilizer control system, indicating that the lock core 22 is in place and the sterilizer door cannot be opened. It should be noted that the specific position of the micro switch 1 can be adjusted according to the actual extension state of the lock core 22. By adjusting the position of the micro switch 1, it is ensured that the lock core 22 presses the micro switch. When the door is closed 1, the lock core 22 can restrict the door body and the door lock from opening; the sterilizer will not start working until the lock core 22 restricts the door body and the door lock from opening, ensuring that the sterilizer will not start working until the door body cannot be opened, thereby improving safety; in addition, after the lock core 22 presses the microswitch 1, the microswitch 1 outputs a signal to the sterilizer control system, and the sterilizer control system controls the valve body to disconnect the pipeline, so that the pressure lock assembly 2 is in a pressure-maintaining state, maintaining the lock core 22 extended, and the pump body does not need to output pressure all the time, thereby reducing costs. When the door needs to be opened, the valve body controls the pipeline to be connected, so that the pressure in the pressure chamber 5 is balanced, and the lock core 22 retracts under the action of the spring 12.
[0022] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned one implementation mode, and all other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.
Claims
1. A sterilizer door limiting mechanism, characterized in that: The invention comprises a micro switch (1) and a pressure lock assembly (2), wherein the pressure lock assembly (2) comprises a lock body (21) and a lock core (22), wherein a cavity (3) is provided in the lock body (21), wherein the lock core (22) is movably connected in the cavity (3), wherein an opening (4) is formed at one end of the lock body (21) for the lock core (22) to extend out, wherein the micro switch (1) is connected to the pressure lock assembly (2) and is located on the moving path of the lock core (22), and wherein the micro switch (1) is electrically connected to a sterilizer control system.
2. The sterilizer door limiting mechanism according to claim 1, characterized in that: It also includes a sterilizer body and a door lock driving mechanism, wherein the door lock driving mechanism is movably connected to the sterilizer body and is used to drive the door lock to open and close, and the pressure lock assembly (2) is connected to the sterilizer body. When the lock core (22) extends from the opening (4), the lock core (22) is located on the moving path of the door lock driving mechanism.
3. The sterilizer door limiting mechanism according to claim 1, characterized in that: The pressure lock assembly (2) further comprises a deformable diaphragm (23), a pressure chamber (5) is further provided in the lock body (21), the cavity (3) and the pressure chamber (5) are distributed in the left-right direction, the diaphragm (23) is connected in the lock body (21) and separates the cavity (3) and the pressure chamber (5), the lock core (22) is movably connected in the cavity (3) in the left-right direction, the cavity (3) forms an opening (4) at the left end of the lock body (21) for the lock core (22) to extend out, the lock body (21) is connected to a pump body communicated with the pressure chamber (5), and the lock core (22) is located on the deformation path of the diaphragm (23) deforming to the left.
4. The sterilizer door limiting mechanism according to claim 3, characterized in that: The right end of the lock body (21) is connected to a connecting pipe (6), the pressure chamber (5) extends into the connecting pipe (6) and passes through the connecting pipe (6), and the pump body is connected to the connecting pipe (6) through a pipeline.
5. The sterilizer door limiting mechanism according to claim 4, characterized in that: The pipeline is connected in series with a valve body for controlling the on-off of the pipeline, and the valve body is electrically connected to the sterilizer control system.
6. The sterilizer door limiting mechanism according to claim 3, characterized in that: The lock body (21) is provided with a first receiving hole (7) in communication with the cavity (3); the first receiving hole (7) forms a first abutting surface (8) in the lock body (21); a limiting portion (9) is connected to a side wall of the lock core (22); and the first abutting surface (8) is located on a moving path of the limiting portion (9).
7. The sterilizer door limiting mechanism according to claim 6, characterized in that: The micro switch (1) is connected to the lock body (21), and the micro switch (1) is located on the moving path of the limiting portion (9).
8. The sterilizer door limiting mechanism according to claim 3, characterized in that: The pressure lock assembly (2) is connected to a reset assembly for driving the lock core (22) to reset; a second accommodating hole (10) communicating with the cavity (3) is provided in the lock body (21); the second accommodating hole (10) forms a second abutting surface (11) in the lock body (21); a limiting portion (9) is connected to a side wall of the lock core (22); the reset assembly comprises a spring (12) sleeved on the lock core (22); two ends of the spring (12) respectively abut against the second abutting surface (11) and the limiting portion (9).