CN112594389A - Mechanical interlocking device and method for pressure container door and pharmaceutical equipment - Google Patents
Mechanical interlocking device and method for pressure container door and pharmaceutical equipment Download PDFInfo
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- CN112594389A CN112594389A CN202011601935.7A CN202011601935A CN112594389A CN 112594389 A CN112594389 A CN 112594389A CN 202011601935 A CN202011601935 A CN 202011601935A CN 112594389 A CN112594389 A CN 112594389A
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- Prior art keywords
- interlocking
- pressure
- valve
- door
- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention discloses a mechanical interlocking device for a pressure container door, which comprises an air inlet pipeline, an interlocking valve and a pneumatic limiting piece for limiting the opening of the door, wherein the air inlet pipeline is connected with the pneumatic limiting piece through the interlocking valve, and an elastic diaphragm which can deform to open the interlocking valve after the interlocking valve is subjected to the pressure in the pressure container is arranged on the interlocking valve. When the pressure of the pressure container is not enough to deform the elastic diaphragm to open the interlocking valve, the air inlet pipeline cannot provide air for the pneumatic limiting piece, and the valve can be opened; when the pressure of the pressure container can deform the elastic diaphragm to open the interlocking valve, the air inlet pipeline can provide air for the pneumatic limiting piece, the pneumatic limiting piece acts, and the door cannot be opened. The pharmaceutical equipment comprises a pressure container, a door and the mechanical interlocking device for the door of the pressure container. The invention has the advantages of no influence of power failure and electronic component faults, safety, reliability and the like.
Description
Technical Field
The invention relates to food and medicine packaging machinery, in particular to a mechanical interlocking device for a pressure container door and pharmaceutical equipment.
Background
As for the pressure container with a quick-opening door, such as a sterilization cabinet, accidents caused by the quick-opening door of the pressure container (positive pressure) occur occasionally, and great risks are brought to the personal safety of related personnel. The existing simple interlocking device of the automatic control system cannot effectively identify risks under the condition of power failure or the condition of failure of electronic components. In addition, the interlocking pressure relief in the door opening process can also accidentally injure people due to overhigh door opening pressure.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a safe and reliable mechanical interlocking device for a pressure container door, which is not influenced by power failure and electronic component faults.
The invention further provides a mechanical interlocking device for the pressure container door.
The invention further provides pharmaceutical equipment comprising the pressure vessel mechanical interlocking device.
In order to solve the technical problems, the invention adopts the following technical scheme:
a mechanical interlocking device for a pressure container door comprises an air inlet pipeline, an interlocking valve and a pneumatic limiting piece for limiting opening of the door, wherein the air inlet pipeline is connected with the pneumatic limiting piece through the interlocking valve, and an elastic diaphragm capable of deforming to open the interlocking valve after the elastic diaphragm is subjected to pressure in the pressure container is arranged on the interlocking valve.
As a further improvement of the above technical solution:
the pneumatic interlocking valve is characterized in that a mounting seat communicated with the pressure container is arranged on the pressure container, the interlocking valve comprises an air inlet cavity, an air outlet cavity, an interlocking cavity and a valve core assembly used for separating the air inlet cavity and the air outlet cavity, an air inlet pipeline is communicated with the air inlet cavity, the air outlet cavity is communicated with a pneumatic limiting part, the valve core assembly extends into the interlocking cavity, and the elastic diaphragm is arranged between the interlocking cavity and the mounting seat.
The valve core assembly comprises a valve rod, one end of the valve rod is located in the air inlet cavity and provided with a sealing part, and the other end of the valve rod is located in the interlocking cavity and provided with a valve plate.
If the pressure receiving area of the sealing part is S1 and the pressure receiving area of the valve plate is S2, S1 is smaller than S2.
The air inlet cavity is communicated with the air outlet cavity through a conical channel.
And a sealing filler is also arranged between the air outlet cavity and the interlocking cavity, and the valve rod penetrates through the sealing filler.
And an elastic part for resetting the valve core assembly is arranged in the air inlet cavity.
And a pressure gauge is arranged on the air inlet pipeline.
When the pressure of the pressure container is not enough to deform the elastic diaphragm to open the interlocking valve, the air inlet pipeline cannot provide air for the pneumatic limiting piece, and the valve can be opened; when the pressure of the pressure container can deform the elastic diaphragm to open the interlocking valve, the air inlet pipeline can provide air for the pneumatic limiting piece, the pneumatic limiting piece acts, and the door cannot be opened.
The pharmaceutical equipment comprises a pressure container, a door for sealing the pressure container and the mechanical interlocking device for the door of the pressure container.
Compared with the prior art, the invention has the advantages that: the invention discloses a mechanical interlocking device for a pressure container door, which is characterized in that a pneumatic limiting piece is adopted to limit the opening of the door, an air inlet pipeline is connected with the pneumatic limiting piece through an interlocking valve, when the interlocking valve is opened, the air inlet pipeline can provide working media for the pneumatic limiting piece, and the pneumatic limiting piece acts to limit the opening of the door; on the contrary, if the interlocking valve is closed, the air inlet pipeline cannot provide working medium for the pneumatic limiting piece, the pneumatic limiting piece does not act, the door can be normally opened, the opening and closing of the interlocking valve depend on whether the elastic diaphragm is deformed under the action of pressure inside the pressure container or not, therefore, the pneumatic limiting piece is related to the pressure inside the pressure container, the interlocking valve is of a pure mechanical structure, the interlocking valve can be normally used under the condition of power failure or when an electronic element fails, the door is automatically locked when the pressure container is pressurized, and the safety performance of equipment is improved.
The interlocking method of the mechanical interlocking device for the pressure container door, disclosed by the invention, can automatically lock the door when the pressure is in the pressure container, is simple and convenient, has good reliability, and is not influenced by power failure or equipment electronic element failure.
The pharmaceutical equipment disclosed by the invention comprises the pressure container mechanical interlocking device, so that the advantages are also achieved.
Drawings
Fig. 1 is a schematic structural view of a mechanical interlocking device for a pressure vessel door and pharmaceutical equipment according to the present invention.
Fig. 2 is a schematic view showing the closed state of the interlock valve in the present invention.
Fig. 3 is a schematic view showing the open state of the interlock valve according to the present invention.
Fig. 4 is a schematic side view of the pneumatic type position limiting member of the present invention.
Fig. 5 is a front view of the pneumatic type position limiting member according to the present invention.
The reference numerals in the figures denote: 1. a door; 2. a pneumatic type stopper; 3. a pressure vessel; 4. an interlock valve; 41. an air inlet cavity; 42. an air outlet cavity; 43. an interlock cavity; 44. an elastic diaphragm; 45. sealing and filling; 46. an elastic member; 47. a valve plate limit piece; 5. an air intake line; 51. a pressure gauge; 6. a mounting seat; 7. a valve core assembly; 71. a valve stem; 72. a sealing part; 74. a valve plate.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Fig. 1 to 5 show an embodiment of a mechanical interlocking device for a pressure vessel door according to the present invention, which includes an air inlet pipeline 5, an interlocking valve 4, and a pneumatic limiting member 2 for limiting the opening of the door 1, wherein the air inlet pipeline 5 is connected to the pneumatic limiting member 2 through the interlocking valve 4, and the interlocking valve 4 is provided with an elastic diaphragm 44 capable of deforming to open the interlocking valve 4 after receiving the pressure in the pressure vessel 3. The door 1 can be a common quick-opening sliding door, the pneumatic type limiting piece 2 can be an air cylinder and the like, the air cylinder is installed on one side of a sliding door track, and a piston rod of the air cylinder can limit the sliding door to move along the track after extending out, so that the sliding door cannot be opened. Of course, in other embodiments, the door 1 may also be a revolving door or the like, and the pneumatic type limiting member 2 is correspondingly used for limiting the opening of the door 1.
According to the mechanical interlocking device for the pressure container door, the opening of the door 1 is limited by adopting a pneumatic limiting piece 2, an air inlet pipeline 5 is connected with the pneumatic limiting piece 2 through an interlocking valve 4, when the interlocking valve 4 is opened, the air inlet pipeline 5 can provide working media for the pneumatic limiting piece 2, and the opening of the door 1 is limited by the action of the pneumatic limiting piece 2; on the contrary, if the interlocking valve 4 is closed, the air inlet pipeline 5 cannot provide working medium for the pneumatic limiting piece 2, the pneumatic limiting piece 2 does not act, the door 1 can be normally opened, and the opening and closing of the interlocking valve 4 depend on whether the elastic diaphragm 44 is deformed under the action of pressure inside the pressure container 3, so that the pneumatic limiting piece 2 is related to the pressure inside the pressure container 3, the pneumatic limiting piece 2 is of a pure mechanical structure, the pneumatic limiting piece can be normally used under the condition of power failure or when an electronic component of the equipment fails, the door 1 is automatically locked when the pressure container 3 is pressurized, and the safety performance of the equipment is improved.
Further, in this embodiment, the pressure vessel 3 is provided with an installation seat 6 communicated with the pressure vessel 3, the interlock valve 4 includes an air inlet cavity 41, an air outlet cavity 42, an interlock cavity 43, and a valve core assembly 7 for separating the air inlet cavity 41 and the air outlet cavity 42, the air inlet pipeline 5 is communicated with the air inlet cavity 41, the air outlet cavity 42 is communicated with the pneumatic type limiting member 2, the valve core assembly 7 extends into the interlock cavity 43, and the elastic diaphragm 44 is arranged between the interlock cavity 43 and the installation seat 6. Under the normal state, the air inlet pipeline 5 conveys air to the air inlet cavity 41, the air pressure of the air inlet cavity 41 is utilized to enable the valve core assembly 7 to separate the air inlet cavity 41 and the air outlet cavity 42, the air cannot be conveyed to the pneumatic limiting part 2 through the air outlet cavity 42, and the pneumatic limiting part 2 does not act. When a certain positive pressure exists in the pressure container 3, the elastic diaphragm 44 is pressed and deformed to push the valve core assembly 7 to move towards one side where the air inlet cavity 41 is located, the air inlet cavity 41 is communicated with the air outlet cavity 42, air can be conveyed to the pneumatic limiting piece 2 through the air outlet cavity 42, the pneumatic limiting piece 2 acts to lock the door 1, and the structure is simple and reliable; the elastic diaphragm 44 only elastically deforms while sealing the pressure vessel 3, so that the problem that particles generated by friction of the dynamic seal pollute the clean environment inside the pressure vessel 3 is avoided.
Further, in the present embodiment, the valve core assembly 7 includes the valve rod 71, one end of the valve rod 71 is located in the air inlet cavity 41 and is provided with the sealing portion 72, that is, the air inlet cavity 41 and the air outlet cavity 42 are separated by the sealing portion 72, and the other end of the valve rod 71 is located in the interlock cavity 43 and is provided with the valve plate 74, so that when the valve core assembly 7 is subjected to the positive pressure action inside the pressure container 3, the valve core assembly 7 moves to the side where the air inlet cavity 41 is located, and the structure is simple and reliable.
In the present embodiment, preferably, S1 is smaller than S2 when the pressure receiving area of the seal portion 72 is S1 and the pressure receiving area of the valve plate 74 is S2. Because the pressure is equal to the product of the air pressure and the action area, the larger the area of the valve plate 74 is, under the action of positive pressure in the pressure container 3, the higher the pressure can be obtained, so that the valve core assembly 7 can be pushed to move to the side where the air inlet cavity 41 is located, and the sensitivity is higher; in other words, the larger the difference between S2 and S1, the lower the pressure difference between the pressure vessel 3 and the air intake chamber 41 is required to push the valve core assembly 7 to operate.
As a preferable technical solution, in the present embodiment, the air inlet cavity 41 and the air outlet cavity 42 are communicated through a tapered channel, which is beneficial to ensuring the sealing performance between the sealing portion 72 and the tapered channel.
In the preferred embodiment, a sealing packing 45 is further disposed between the outlet cavity 42 and the interlock cavity 43, and the valve rod 71 penetrates through the sealing packing 45. A sealing packing 45 is provided through which the valve core assembly 7 can pass and move, and the tightness between the air outlet cavity 42 and the interlocking cavity 43 is ensured.
In the present embodiment, an elastic member 46, such as a coil spring, for returning the valve core assembly 7 is provided in the intake chamber 41. When the valve core assembly 7 moves towards one side of the air inlet cavity 41 due to positive pressure inside the pressure container 3, the elastic piece 46 is compressed, and after the pressure inside the pressure container 3 is relieved, the elastic piece 46 extends, so that the valve core assembly 7 automatically resets, and the pressure relief valve is simple in structure and convenient to use. Further, valve plate stoppers 47 may be provided on both sides of the valve plate 74 to restrict the maximum movement amount of the valve plate 74.
As a preferred technical solution, in this embodiment, a pressure gauge 51 is disposed on the air intake pipeline 5, so as to facilitate obtaining the intake pressure of the air intake pipeline 5.
In the interlocking method of the mechanical interlocking device for the pressure vessel door of the embodiment, when the pressure of the pressure vessel 3 is not enough to deform the elastic diaphragm 44 to open the interlocking valve 4, the air inlet pipeline 5 cannot provide air for the pneumatic limiting piece 2, and the door 1 can be opened; when the pressure in the pressure vessel 3 can deform the elastic diaphragm 44 to open the interlocking valve 4, the air inlet pipe 5 can provide air to the pneumatic limiting member 2, and the pneumatic limiting member 2 acts, so that the door 1 cannot be opened.
According to the interlocking method of the mechanical interlocking device for the pressure container door, the door 1 can be automatically locked when pressure is brought inside the pressure container 3, and the interlocking method is simple, convenient and good in reliability and is not affected by power failure or equipment electronic element faults.
The pharmaceutical equipment (such as a sterilization cabinet) of the embodiment comprises a pressure container 3, a door 1 for sealing the pressure container, and the mechanical interlocking device for the door of the pressure container.
The pharmaceutical equipment comprises the pressure vessel mechanical interlocking device, and therefore, the pharmaceutical equipment also has the advantages.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. A mechanical interlocking device for a pressure vessel door is characterized in that: the pneumatic limiting device comprises an air inlet pipeline (5), an interlocking valve (4) and a pneumatic limiting piece (2) used for limiting opening of a door (1), wherein the air inlet pipeline (5) is connected with the pneumatic limiting piece (2) through the interlocking valve (4), and an elastic diaphragm (44) capable of deforming to open the interlocking valve (4) after being subjected to pressure in a pressure container (3) is arranged on the interlocking valve (4).
2. The pressure vessel door mechanical interlock of claim 1, wherein: be equipped with on pressure vessel (3) mount pad (6) with pressure vessel (3) intercommunication, interlocking valve (4) are including admitting air chamber (41), go out air cavity (42), interlocking chamber (43) and be used for cutting off admit air chamber (41) and case subassembly (7) of going out air cavity (42), admit air pipeline (5) with admit air chamber (41) intercommunication, go out air cavity (42) with pneumatic type locating part (2) intercommunication, case subassembly (7) extend to in interlocking chamber (43), elastic diaphragm (44) locate interlocking chamber (43) with between mount pad (6).
3. The pressure vessel door mechanical interlock of claim 2, wherein: the valve core assembly (7) comprises a valve rod (71), one end of the valve rod (71) is located in the air inlet cavity (41) and is provided with a sealing part (72), and the other end of the valve rod (71) is located in the interlocking cavity (43) and is provided with a valve plate (74).
4. The pressure vessel door mechanical interlock of claim 3, wherein: if the pressure receiving area of the sealing part (72) is S1 and the pressure receiving area of the valve plate (74) is S2, S1 is smaller than S2.
5. The pressure vessel door mechanical interlock of claim 3, wherein: the air inlet cavity (41) is communicated with the air outlet cavity (42) through a conical channel.
6. The pressure vessel door mechanical interlock of claim 3, wherein: and a sealing packing (45) is further arranged between the air outlet cavity (42) and the interlocking cavity (43), and the valve rod (71) penetrates through the sealing packing (45).
7. The pressure vessel door mechanical interlock of any one of claims 2 to 6, wherein: an elastic piece (46) for resetting the valve core assembly (7) is arranged in the air inlet cavity (41).
8. The pressure vessel door mechanical interlock of any one of claims 1 to 6, wherein: and a pressure gauge (51) is arranged on the air inlet pipeline (5).
9. A method of interlocking a mechanical interlock device for a pressure vessel door according to any one of claims 1 to 8, characterized in that: when the pressure of the pressure container (3) is not enough to deform the elastic diaphragm (44) to open the interlocking valve (4), the air inlet pipeline (5) can not provide air for the pneumatic limiting piece (2), and the door (1) can be opened; when the pressure of the pressure container (3) can deform the elastic diaphragm (44) to open the interlocking valve (4), the air inlet pipeline (5) can provide air for the pneumatic limiting piece (2), the pneumatic limiting piece (2) acts, and the door (1) cannot be opened.
10. A pharmaceutical device comprising a pressure vessel (3) and a door (1) for sealing the pressure vessel, characterized in that: further comprising the pressure vessel door mechanical interlock of any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011601935.7A CN112594389A (en) | 2020-12-29 | 2020-12-29 | Mechanical interlocking device and method for pressure container door and pharmaceutical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011601935.7A CN112594389A (en) | 2020-12-29 | 2020-12-29 | Mechanical interlocking device and method for pressure container door and pharmaceutical equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112594389A true CN112594389A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011601935.7A Pending CN112594389A (en) | 2020-12-29 | 2020-12-29 | Mechanical interlocking device and method for pressure container door and pharmaceutical equipment |
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| Country | Link |
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| CN (1) | CN112594389A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111788466A (en) * | 2018-02-26 | 2020-10-16 | 艾卡工厂有限及两合公司 | Calorimeter |
-
2020
- 2020-12-29 CN CN202011601935.7A patent/CN112594389A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111788466A (en) * | 2018-02-26 | 2020-10-16 | 艾卡工厂有限及两合公司 | Calorimeter |
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