Feeding door locking control circuit of medical waste treatment high-temperature sterilization equipment

Abstract

The utility model discloses a locking control circuit for a feeding door of medical waste treatment high-temperature sterilization equipment, which comprises a closed state detection circuit for detecting the closed position of the feeding door and electrically connected with a microprocessor; the closing pressure detection circuit is used for detecting the closing pressure of the feeding door and is electrically connected with the microprocessor; one end of the load control circuit is electrically connected with the microprocessor, and the other end of the load control circuit is electrically connected with the feeding door self-locking mechanism. According to the scheme, the closed position of the feeding door is detected through the closed state detection circuit, the covering and pressing of the feeding door are detected through the closed pressure detection circuit, and when the feeding door reaches the closed position and the closed pressure reaches the preset value, the feeding door is closed. The microprocessor controls the feeding door self-locking mechanism to conduct self-locking on the feeding door through the load control circuit, accurate closing and closing pressure of the feeding door are guaranteed, and the gas leakage risk can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical waste treatment technical field, concretely relates to a medical waste treatment high temperature sterilization equipment feed door locking control circuit. BACKGROUND

[0002] When carrying out the treatment of medical waste, the medical waste is often crushed, and the crushed medical waste is sterilized by high temperature steam, in order to ensure the safety of the equipment and the surrounding personnel, the feed door of the equipment needs to be self-locked to avoid gas leakage caused by the opening of the feed door. However, the current medical waste treatment high temperature sterilization equipment feed door locking control only controls the locking through the position state of the feed door, and cannot guarantee the closing pressure of the feed door, so there is a risk of gas leakage. SUMMARY

[0003] The utility model provides a medical waste treatment high temperature sterilization equipment feed door locking control circuit, through the closed state detection circuit to medical waste treatment high temperature sterilization equipment's feed door's closed position is detected, through the closed pressure detection circuit to medical waste treatment high temperature sterilization equipment's feed door's cover tight pressure is detected, when medical waste treatment high temperature sterilization equipment's feed door reaches the closed position and the closed pressure reaches the preset value, microprocessor controls medical waste treatment high temperature sterilization equipment's feed door self locking mechanism through load control circuit and locks the feed door, ensures that the feed door of medical waste treatment high temperature sterilization equipment is accurately closed, and the closed pressure can avoid the risk of gas leakage.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0005] The utility model provides a medical waste treatment high temperature sterilization equipment feed door locking control circuit, which comprises:

[0006] The closed state detection circuit detects the closed position of the feed door of the medical waste treatment high temperature sterilization equipment, and the closed state detection circuit is electrically connected with the microprocessor;

[0007] The closed pressure detection circuit detects the closed pressure of the feed door of the medical waste treatment high temperature sterilization equipment, and the closed pressure detection circuit is electrically connected with the microprocessor;

[0008] The load control circuit is electrically connected with the microprocessor at one end, and is electrically connected with the feed door self-locking mechanism of the medical waste treatment high temperature sterilization equipment at the other end.

[0009] Optionally, the closed state detection circuit comprises:

[0010] A limit switch, a first pin of the limit switch being grounded, a second pin of the limit switch being electrically connected with a PD2 pin of the microprocessor;

[0011] A pull-up resistor, a first pin of the pull-up resistor being electrically connected with a VCC pin of the microprocessor, a second pin of the pull-up resistor being electrically connected with the PD2 pin of the microprocessor.

[0012] Optionally, the closed state detection circuit further comprises:

[0013] A first diode, a positive pin of the first diode being electrically connected with the VCC pin of the microprocessor, a negative pin of the first diode being electrically connected with the first pin of the pull-up resistor.

[0014] Optionally, the closed state detection circuit further comprises:

[0015] A transient voltage suppression diode, a positive pin of the transient voltage suppression diode being grounded, a negative pin of the transient voltage suppression diode being electrically connected with the second pin of the limit switch;

[0016] A lightning protection tube, a first pin of the lightning protection tube being grounded, a second pin of the lightning protection tube being electrically connected with the second pin of the limit switch.

[0017] Optionally, the closed state detection circuit further comprises:

[0018] A seventh capacitor, a first pin of the seventh capacitor being grounded, a second pin of the seventh capacitor being electrically connected with the second pin of the limit switch through a fourth resistor.

[0019] Optionally, the closed pressure detection circuit comprises:

[0020] A pressure sensor, a GND pin of the pressure sensor being grounded, a VCC pin of the pressure sensor being electrically connected with the VCC pin of the microprocessor, a V_OUT pin of the pressure sensor being electrically connected with an ADC0 pin of the microprocessor through a second resistor.

[0021] Optionally, the closed pressure detection circuit further comprises:

[0022] A fourth capacitor, the fourth capacitor being electrically connected between the GND pin and the V_OUT pin of the pressure sensor;

[0023] A fifth capacitor, the fifth capacitor being electrically connected between the GND pin and the VCC pin of the pressure sensor;

[0024] A sixth capacitor, the sixth capacitor being electrically connected between the GND pin and the VCC pin of the pressure sensor.

[0025] Optionally, the load control circuit comprises:

[0026] a MOS tube, a gate of the MOS tube is electrically connected with a PD3 pin of the microprocessor, a drain of the MOS tube is grounded;

[0027] a relay, a first pin of a coil of the relay is electrically connected with a VCC pin of the microprocessor, a second pin of the coil of the relay is electrically connected with a source of the MOS tube, a common end pin of the relay is electrically connected with a load power supply, a normally open contact pin of the relay is electrically connected with a feed door self-locking mechanism of the medical waste treatment high-temperature sterilization equipment.

[0028] Optionally, the load control circuit further comprises:

[0029] a fifth resistor, the fifth resistor is electrically connected between the gate of the MOS tube and the PD3 pin of the microprocessor;

[0030] a sixth resistor, the gate of the MOS tube is grounded through the sixth resistor;

[0031] an eighth capacitor, the eighth capacitor is electrically connected between the gate and the drain of the MOS tube.

[0032] Optionally, the load control circuit further comprises:

[0033] a fourth diode, a positive electrode of the fourth diode is electrically connected with the source of the MOS tube, a negative electrode of the fourth diode is electrically connected with the first pin of the coil of the relay.

[0034] The above-mentioned scheme of the utility model has at least the following beneficial effects:

[0035] The above-mentioned scheme of the utility model detects the closing position of the feed door of the medical waste treatment high-temperature sterilization equipment through the closing state detection circuit, detects the cover tight compression of the feed door of the medical waste treatment high-temperature sterilization equipment through the closing pressure detection circuit, when the feed door of the medical waste treatment high-temperature sterilization equipment reaches the closing position and the closing pressure reaches the preset value, the microprocessor controls the feed door self-locking mechanism of the medical waste treatment high-temperature sterilization equipment to self-lock the feed door of the medical waste treatment high-temperature sterilization equipment through the load control circuit, ensures that the feed door of the medical waste treatment high-temperature sterilization equipment is accurately closed, and the closing pressure can avoid the risk of gas leakage. BRIEF DESCRIPTION OF DRAWINGS

[0036] Fig. 1 is the module diagram of the medical waste treatment high-temperature sterilization equipment feed door locking control circuit provided by the embodiment of the utility model;

[0037] Fig. 2This is a circuit diagram of the feed door locking control circuit of the high-temperature sterilization equipment for medical waste treatment provided in an embodiment of this utility model. Detailed Implementation

[0038] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0039] like Figs. 1-2 As shown, this utility model provides a locking control circuit for the feed door of a high-temperature sterilization equipment for medical waste treatment, including:

[0040] A closure detection circuit 10 for detecting the closed position of the feed gate of a high-temperature sterilization equipment for medical waste treatment is electrically connected to a microprocessor U1.

[0041] A closure pressure detection circuit 20 for detecting the closing pressure of the feed gate of a high-temperature sterilization equipment for medical waste treatment is electrically connected to a microprocessor U1.

[0042] The load control circuit 30 is electrically connected at one end to the microprocessor U1 and at the other end to the self-locking mechanism of the feed door of the high-temperature sterilization equipment for medical waste treatment.

[0043] In this embodiment, the closure position of the feed door of the medical waste treatment high-temperature sterilization equipment is detected by the closure state detection circuit 10, and the tightness of the feed door is detected by the closure pressure detection circuit 20. When the feed door of the medical waste treatment high-temperature sterilization equipment reaches the closed position and the closure pressure reaches the preset value, the microprocessor U1 controls the feed door self-locking mechanism of the medical waste treatment high-temperature sterilization equipment to self-lock the feed door through the load control circuit 30. Through the above process, the feed door of the medical waste treatment high-temperature sterilization equipment can be accurately closed, and the closure pressure of the feed door can be guaranteed, which can effectively avoid the risk of gas leakage.

[0044] like Fig. 2 As shown, in an optional embodiment of the present invention, the closed state detection circuit 10 includes:

[0045] Limit switch ST1, the first pin of the limit switch ST1 is grounded, and the second pin of the limit switch ST1 is electrically connected to the PD2 pin of the microprocessor U1;

[0046] Pull-up resistor R3, the first pin of which is electrically connected to the VCC pin of the microprocessor U1, and the second pin of which is electrically connected to the PD2 pin of the microprocessor U1.

[0047] In this embodiment, limit switch ST1 is set at the closed position of the feed door of the medical waste treatment high-temperature sterilization equipment. When the feed door of the medical waste treatment high-temperature sterilization equipment is not closed, limit switch ST1 is in the open state, and under the action of pull-up resistor R3, the PD2 pin of microprocessor U1 is in a high-level state. When the feed door of the medical waste treatment high-temperature sterilization equipment is fully closed, the feed door of the medical waste treatment high-temperature sterilization equipment contacts limit switch ST1, limit switch ST1 closes, and the PD2 pin of microprocessor U1 is in a low-level state, indicating that the feed door of the medical waste treatment high-temperature sterilization equipment is fully and accurately closed.

[0048] like Fig. 2 As shown, in an optional embodiment of the present invention, the closed state detection circuit 10 further includes:

[0049] The first diode D1 has its positive pin electrically connected to the VCC pin of the microprocessor U1, and its negative pin electrically connected to the first pin of the pull-up resistor R3.

[0050] In this embodiment, the power supply of the microprocessor U1 is protected by the first diode D1 to prevent the unstable signal of the limit switch ST1 from impacting the power supply of the microprocessor U1.

[0051] In an optional embodiment of this utility model, the closed state detection circuit 10 further includes:

[0052] Transient voltage suppressor diode D2, the positive terminal of the transient voltage suppressor diode D2 is grounded, and the negative terminal of the transient voltage suppressor diode D2 is electrically connected to the second terminal of the limit switch ST1;

[0053] The surge protector D3 has its first pin grounded and its second pin electrically connected to the second pin of the limit switch ST1.

[0054] In this embodiment, the transient voltage suppression diode D2 and the surge protector D3 can filter the signal of the limit switch ST1, filter out interference signals in the signal of the limit switch ST1, avoid interference signals from affecting the microprocessor U1, and ensure that the microprocessor U1 can accurately receive the open or closed signal of the limit switch ST1.

[0055] like Fig. 2 As shown, in an optional embodiment of the present invention, the closed state detection circuit 10 further includes:

[0056] The seventh capacitor C7 has its first pin grounded and its second pin electrically connected to the second pin of the limit switch ST1 via the fourth resistor R4.

[0057] In this embodiment, the seventh capacitor C7 and the fourth resistor R4 are used for filtering and debouncing to avoid false triggering caused by the contact bounce of the limit switch ST1, and to ensure that the microprocessor U1 can accurately receive the open or closed signal of the limit switch ST1.

[0058] like Fig. 2 As shown, in an optional embodiment of the present invention, the closed pressure detection circuit 20 includes:

[0059] Pressure sensor U2, the GND pin of pressure sensor U2 is grounded, the VCC pin of pressure sensor U2 is electrically connected to the VCC pin of microprocessor U1, and the V_OUT pin of pressure sensor U2 is electrically connected to the ADC0 pin of microprocessor U1 through the second resistor R2.

[0060] In this embodiment, pressure sensor U2 is installed at the closing point of the feed door of the medical waste treatment high-temperature sterilization equipment. When the feed door of the medical waste treatment high-temperature sterilization equipment is closed, it comes into contact with pressure sensor U2. Pressure sensor U2 detects the closing pressure of the feed door of the medical waste treatment high-temperature sterilization equipment and transmits the closing pressure signal to microprocessor U1. When the closing pressure detected by pressure sensor U2 reaches a preset value, it indicates that the closing pressure of the feed door of the medical waste treatment high-temperature sterilization equipment meets the requirements. When limit switch ST1 is closed, microprocessor U1 controls the self-locking mechanism of feed door of medical waste treatment high-temperature sterilization equipment to self-lock the feed door of medical waste treatment high-temperature sterilization equipment through load control circuit 30. The second resistor R2 provides current limiting protection to ensure the safety of microprocessor U1.

[0061] like Fig. 2 As shown, in an optional embodiment of the present invention, the closed pressure detection circuit 20 further includes:

[0062] The fourth capacitor C4 is electrically connected between the GND pin and the V_OUT pin of the pressure sensor U2;

[0063] The fifth capacitor C5 is electrically connected between the GND pin and the VCC pin of the pressure sensor U2;

[0064] The sixth capacitor C6 is electrically connected between the GND pin and the VCC pin of the pressure sensor U2.

[0065] In this embodiment, the fifth capacitor C5 is an electrolytic capacitor. The positive terminal of the fifth capacitor C5 is electrically connected to the VCC pin of the pressure sensor U2, and the negative terminal of the fifth capacitor C5 is electrically connected to the GND pin of the pressure sensor U2. The fifth capacitor C5 and the sixth capacitor C6 attenuate the high-frequency noise signal, allowing the low-frequency useful signal to pass smoothly, thereby achieving the purpose of filtering and ensuring the power supply safety of the microprocessor U1. The fourth capacitor C4 filters the output signal of the pressure sensor U2 to ensure the safety of the microprocessor U1.

[0066] like Fig. 2 As shown, in an optional embodiment of the present invention, the load control circuit 30 includes:

[0067] MOSFET Q1, the gate of MOSFET Q1 is electrically connected to the PD3 pin of microprocessor U1, and the drain of MOSFET Q1 is grounded;

[0068] Relay K2, the first pin of the coil of relay K2 is electrically connected to the VCC pin of microprocessor U1, the second pin of the coil of relay K2 is electrically connected to the source of MOSFET Q1, the common pin of relay K2 is electrically connected to the load power supply, and the normally open contact pin of relay K2 is electrically connected to the self-locking mechanism of the feed door of the high-temperature sterilization equipment for medical waste treatment.

[0069] In this embodiment, when the limit switch ST1 is open or the pressure sensor U2 detects that the pressure has not reached the preset pressure, the microprocessor U1 controls the MOS transistor Q1 to be in the off state, the coil of the relay K2 is not energized, the common terminal of the relay K2 is connected to the normally closed contact, and the load power supply is not connected to the self-locking mechanism of the feed door of the medical waste treatment high temperature sterilization equipment.

[0070] When limit switch ST1 is closed and pressure sensor U2 detects that the pressure has reached the preset pressure, microprocessor U1 controls MOSFET Q1 to be in the conducting state, relay K2's coil is energized, relay K2's common terminal is connected to the normally open contact, and the load power supply is connected to the self-locking mechanism of the feed door of the medical waste treatment high-temperature sterilization equipment. The load power supply supplies power to the self-locking mechanism of the feed door of the medical waste treatment high-temperature sterilization equipment, and the feed door of the medical waste treatment high-temperature sterilization equipment is self-locked by the self-locking mechanism.

[0071] like Fig. 2 As shown, in an optional embodiment of the present invention, the load control circuit 30 further includes:

[0072] The fifth resistor R5 is electrically connected between the gate of the MOS transistor Q1 and the PD3 pin of the microprocessor U1;

[0073] The sixth resistor R6 is used to ground the gate of the MOS transistor Q1.

[0074] The eighth capacitor C8 is electrically connected between the gate and drain of the MOS transistor Q1.

[0075] In this embodiment, current limiting protection is provided by the fifth resistor R5, and filtering is provided by the sixth resistor R6 and the eighth capacitor C8 to ensure the safety of MOSFET Q1.

[0076] like Fig. 2 Fig. 2 As shown, in an optional embodiment of the present invention, the load control circuit 30 further includes:

[0077] The fourth diode D4 has its anode electrically connected to the source of the MOSFET Q1, and its cathode electrically connected to the first pin of the coil of the relay K2.

[0078] In this embodiment, when the coil of relay K2 is de-energized, a reverse electromotive force is generated. The fourth diode D4 provides a discharge circuit for this reverse electromotive force to prevent the reverse electromotive force from damaging the MOSFET Q1.

[0079] The process of locking and controlling the feed door of the high-temperature sterilization equipment for medical waste treatment:

[0080] When the feed door of the high-temperature sterilization equipment for medical waste treatment is not closed, the limit switch ST1 is in the open state. Under the action of the pull-up resistor R3, the PD2 pin of the microprocessor U1 is in the high level state, and the surface limit switch ST1 is in the open state. At this time, the pressure sensor U2 does not detect pressure. When the pressure sensor U2 detects that the pressure has not reached the preset pressure, the limit switch ST1 is open, or the pressure sensor U2 detects that the pressure has not reached the preset pressure, the microprocessor U1 controls the MOS transistor Q1 to be in the cut-off state, the coil of the relay K2 is not energized, the common terminal of the relay K2 is connected to the normally closed contact, and the load power supply is not connected to the self-locking mechanism of the feed door of the high-temperature sterilization equipment for medical waste treatment.

[0081] When the feed gate of the high-temperature sterilization equipment for medical waste treatment closes, it contacts limit switch ST1, causing ST1 to close and the PD2 pin of microprocessor U1 to be at a low level, indicating that limit switch ST1 is closed. The feed gate also contacts pressure sensor U2, which detects the closing pressure of the feed gate and transmits the closing pressure signal to microprocessor U1. When the closing pressure detected by pressure sensor U2 reaches a preset value, it indicates that the high-temperature sterilization equipment for medical waste treatment is closed. When the closing pressure of the inlet gate of the sterilization equipment meets the requirements; when the limit switch ST1 is closed and the closing pressure detected by the pressure sensor U2 reaches the preset value, the microprocessor U1 controls the MOS transistor Q1 to be in the conducting state, the coil of the relay K2 is energized, the common terminal of the relay K2 is connected to the normally open contact, the load power supply is connected to the self-locking mechanism of the inlet gate of the medical waste treatment high-temperature sterilization equipment, and the self-locking mechanism of the inlet gate of the medical waste treatment high-temperature sterilization equipment is powered through the load power supply, and the inlet gate of the medical waste treatment high-temperature sterilization equipment is self-locked through the self-locking mechanism of the inlet gate of the medical waste treatment high-temperature sterilization equipment.

[0082] Through the above process, the accurate closure of the feed gate of the high-temperature sterilization equipment for medical waste treatment can be guaranteed, and the closing pressure of the feed gate can be guaranteed, effectively avoiding the risk of gas leakage.

[0083] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A locking control circuit for the feed door of a high-temperature sterilization equipment for medical waste treatment, characterized in that: The utility model relates to a medical waste treatment high temperature sterilization equipment, including: The closure state detection circuit (10) of detecting medical waste treatment high temperature sterilization equipment's feed door closed position, the closure state detection circuit (10) with microprocessor (U1) electricity is connected; The closure pressure detection circuit (20) of detecting medical waste treatment high temperature sterilization equipment's feed door closed pressure, the closure pressure detection circuit (20) with microprocessor (U1) electricity is connected; Load control circuit (30), one end of load control circuit (30) with microprocessor (U1) electricity is connected, the other end of load control circuit (30) with medical waste treatment high temperature sterilization equipment's feed door self-locking mechanism electricity is connected.

2. The medical waste processing autoclave door lock control circuit of claim 1, wherein, The closure state detection circuit (10) includes: Limit switch (ST1), the first pin of limit switch (ST1) is grounded, the second pin of limit switch (ST1) with the PD2 pin of microprocessor (U1) electricity is connected; Pull-up resistor (R3), the first pin of pull-up resistor (R3) with the VCC pin of microprocessor (U1) electricity is connected, the second pin of pull-up resistor (R3) with the PD2 pin of microprocessor (U1) electricity is connected.

3. The medical waste processing autoclave door lock control circuit of claim 2, wherein, The closure state detection circuit (10) further includes: The first diode (D1) of first diode (D1), the VCC pin of first diode (D1) with the VCC pin of microprocessor (U1) electricity is connected, the negative pole pin of first diode (D1) with the first pin of pull-up resistor (R3) electricity is connected.

4. The medical waste processing autoclave door lock control circuit of claim 2, wherein, The closure state detection circuit (10) further includes: Transient voltage suppression diode (D2), the positive pole pin of transient voltage suppression diode (D2) is grounded, the negative pole pin of transient voltage suppression diode (D2) with the second pin of limit switch (ST1) electricity is connected; Lightning protection tube (D3), the first pin of lightning protection tube (D3) is grounded, the second pin of lightning protection tube (D3) with the second pin of limit switch (ST1) electricity is connected.

5. The medical waste autoclave door lock control circuit of claim 2, wherein, The closure state detection circuit (10) further includes: The seventh capacitor (C7) of seventh capacitor (C7), the first pin of seventh capacitor (C7) is grounded, the second pin of seventh capacitor (C7) is connected with the second pin of limit switch (ST1) through the fourth resistance (R4).

6. The medical waste autoclave door lock control circuit of claim 1, wherein, The closure pressure detection circuit (20) includes: Pressure sensor (U2), the GND pin of pressure sensor (U2) is grounded, the VCC pin of pressure sensor (U2) with the VCC pin of microprocessor (U1) electricity is connected, the V_OUT pin of pressure sensor (U2) is connected with the ADC0 pin of microprocessor (U1) through the second resistance (R2).

7. The medical waste autoclave door lock control circuit of claim 6, wherein, The closure pressure detection circuit (20) further includes: The fourth capacitor (C4) of fourth capacitor (C4) is connected between the GND pin and V_OUT pin of pressure sensor (U2); The fifth capacitor (C5) of fifth capacitor (C5) is connected between the GND pin and VCC pin of pressure sensor (U2); A sixth capacitor (C6) is electrically connected between the GND pin and the VCC pin of the pressure sensor (U2).

8. The medical waste autoclave door lock control circuit of claim 1, wherein, The load control circuit (30) comprises: A MOS tube (Q1), the gate of the MOS tube (Q1) is electrically connected with the PD3 pin of the microprocessor (U1), and the drain of the MOS tube (Q1) is grounded. A relay (K2), the first pin of the coil of the relay (K2) is electrically connected with the VCC pin of the microprocessor (U1), the second pin of the coil of the relay (K2) is electrically connected with the source of the MOS tube (Q1), the common end pin of the relay (K2) is electrically connected with the load power supply, and the normally open contact pin of the relay (K2) is electrically connected with the feed door self-locking mechanism of the medical waste treatment high-temperature sterilization equipment.

9. The medical waste autoclave door lock control circuit of claim 8, wherein, The load control circuit (30) further comprises: A fifth resistor (R5) is electrically connected between the gate of the MOS tube (Q1) and the PD3 pin of the microprocessor (U1). A sixth resistor (R6) is grounded through the gate of the MOS tube (Q1). An eighth capacitor (C8) is electrically connected between the gate and the drain of the MOS tube (Q1).

10. The medical waste autoclave door lock control circuit of claim 8, wherein, The load control circuit (30) further comprises: A fourth diode (D4), the anode of the fourth diode (D4) is electrically connected with the source of the MOS tube (Q1), and the cathode of the fourth diode (D4) is electrically connected with the first pin of the coil of the relay (K2).

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