M-xylylene dimethyl isocyanate storage device

Abstract

The invention discloses an m-xylylene isocyanate storage device which comprises a storage device, the top end of the storage device is detachably sleeved with a sealing plug, a circle of sealing strip adheres to the side face of the sealing plug, adsorption strips are integrally formed on the upper side and the lower side of the sealing strip, and an annular notch is formed between the two adsorption strips. The connecting corners of the two adsorption strips and the sealing strip are fixedly connected with spherical protrusions, and strip-shaped grooves are formed in the spherical protrusions at equal intervals in the circumferential direction. By arranging the sealing strip, the adsorption strip, the spherical protrusions and the strip-shaped grooves, when the sealing plug is pulled out by inclining towards one side in an inclined posture, contraction deformation can be conducted through the spherical protrusions at the corners of the adsorption strip and the sealing strip, so that local pressure caused by inclined pulling-out is dispersed and conducted to the adsorption strip and the whole sealing strip; the problems that the local sealing strip and the adsorption strip are stressed unevenly and deform permanently after being pressed are effectively avoided, and the safety of m-xylylene dimethyl isocyanate stored in a laboratory for a long time is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical storage, and more specifically, to a storage device for meta-xylylene diisocyanate. Background Art

[0002] Meta-phenylenedimethyl isocyanate is a colorless, transparent liquid with low viscosity, low toxicity, volatility and low solubility. It is an amphiphilic compound that is compatible with organic matter and can react with polymers. It is widely used in the preparation of polyurethane resins. It can be used as a cross-linking agent for polyurethane elastomers and polyurethane coatings, and is used to manufacture car seats, thermal insulation materials, coatings and adhesives, etc. Meta-phenylenedimethyl isocyanate remains stable at room temperature and pressure and is a liquid. It is sensitive to moisture and light, flammable, tear-inducing and irritating. Therefore, it needs to be stored in a dedicated storage device and sealed, dried and kept away from light.

[0003] When the current storage device is used to store and use isocyanate, the sealing cover on the storage device is engaged with or taken out of the storage device, and the two are usually moved vertically and parallelly or flipped (when taking out the sealing cover, the sealing cover is usually flipped to the left or right to be pulled out). During the movement, the annular outer surface of the sealing cover cannot be simultaneously contacted with the inner wall of the storage device, so that the pressure on the sealing strip between the sealing cover and the cup wall of the storage device is uneven. Especially when flipping, the sealing cover will concentrate pressure on the sealing strip at a certain point. If this continues for a long time, it is easy to cause uneven force on the local sealing strip after compression, resulting in permanent deformation, resulting in a gap between the sealing strip and the inner wall of the storage device, thereby affecting its sealing effect. Since isocyanate storage itself is volatile and irritating, poor sealing is easy to cause pollution of the surrounding environment or deterioration of the material itself, thereby affecting the safety of isocyanate storage in the laboratory for long-term storage. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a storage device for isocyanate. By arranging a sealing strip, an adsorption strip, a spherical protrusion and a strip groove, when the sealing plug is pulled out in an inclined posture by tilting to one side, the spherical protrusions at the corners of the adsorption strip and the sealing strip can shrink and deform, so that the local pressure caused by the inclined pulling out is dispersed and transmitted to the adsorption strip and the sealing strip as a whole, ensuring that the overall closed structure is always in a state with a deformation margin, effectively avoiding the problem of uneven force on the local sealing strip and the adsorption strip after being compressed, and permanent deformation, so as to ensure the safety of isocyanate during long-term storage in the laboratory.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a storage device for isocyanate, comprising a storage container, a sealing plug is detachably mounted on the top of the storage container, a receiving cavity is provided inside the storage container, a sealing strip is pasted on the side of the sealing plug, adsorption strips are integrally formed on the upper and lower sides of the sealing strip, an annular notch is formed between the two adsorption strips, a spherical protrusion is fixedly connected at the connecting corners of the two adsorption strips and the sealing strip, strip grooves are equidistantly spaced in the circumferential direction inside the spherical protrusion, a spherical notch is provided at the bottom ends of the strip grooves, the two spherical protrusions are respectively located at the oblique upper and lower positions of the annular notch, and the overall cross-section of the sealing strip and the adsorption strip is concave; The two adsorption strips and the annular notch satisfy the following movement rules: in the initial state, one of the adsorption strips located above the sealing strip maintains an outward tilted posture, and an obtuse angle is maintained between the adsorption strip and the sealing strip, and the other adsorption strip located below the sealing strip maintains a vertical horizontal state; In the working state, the two adsorption strips are kept in a vertical and horizontal posture, and the annular notches in the middle of the two adsorption strips are squeezed by external force, so that the whole is compressed and deformed; The spherical protrusion protrudes outward as a whole, and the strip groove gradually shrinks in an inclined manner from the outside to the inside toward the direction of the spherical groove mouth, and the depth of the strip groove is ≤ the radius of the spherical protrusion. The cross-section of the spherical groove mouth is circular as a whole, and the diameter of the spherical groove mouth is larger than the distance between the extreme ends of the strip groove.

[0006] In a preferred embodiment, the sealing strip, the adsorption strip and the spherical protrusion are all made of elastic rubber material.

[0007] In a preferred embodiment, the top of the reservoir is provided with an arc-shaped bottle mouth, and the surface of the arc-shaped bottle mouth is smooth.

[0008] In a preferred embodiment, the bottom end of the sealing plug extends to the interior of the reservoir, and the sealing plug is made of elastic material as a whole, and the sealing plug and the sealing strip as a whole are in interference fit with the bottle mouth of the reservoir.

[0009] In a preferred embodiment, the spherical protrusion is arranged on a side surface of the connection between the adsorption strip and the sealing strip and away from the annular notch.

[0010] In a preferred embodiment, the annular notch and the sealing strip are symmetrically distributed, the adsorption strip is L-shaped as a whole, and the corners of the adsorption strip on one side close to the annular notch are rounded.

[0011] Technical effects and advantages of the present invention: The present invention provides a sealing strip, an adsorption strip, a spherical protrusion and a strip groove, and utilizes the mutual cooperation of the several. When the sealing plug is pulled out in an inclined posture by tilting to one side, the spherical protrusions at the corners of the adsorption strip and the sealing strip can shrink and deform through the strip grooves inside themselves, so that the local pressure caused by the inclined pulling out is dispersed and transmitted to the adsorption strip and the sealing strip as a whole, and the adsorption strip and the sealing strip gradually squeeze the position of the annular groove, so that when the adsorption strip and the sealing strip are compressed, the whole is always in a state with a deformation margin, effectively avoiding the problem of uneven force on the local sealing strip and the adsorption strip after being compressed, and permanent deformation. During the process of fixing the sealing plug, an adsorption strip inclined outward on the sealing strip will be pressed inward through the bottle wall of the storage container, so that it gradually tends to a vertical posture. In the process of pressing, the spherical protrusion and the strip groove will be used to compress the multiple strip grooves inside the spherical protrusion through the rotational deformation trend, and the adsorption strip on one side will be twisted toward the side of the annular groove, thereby squeezing the interval space between the annular groove and the storage container to reduce its volume, thereby forming a local negative pressure area between the bottle wall of the storage container and the annular groove. At this time, the atmospheric pressure is pressed onto the sealing strip to make it adsorbed to the cup wall of the storage container, thereby completing the fixation. The interference fit between the two adsorption strips and the sealing strip and the storage container is utilized, and the fixed plug is tightened to the storage container after natural deformation. Therefore, the double-layer force measures of local negative pressure adsorption and interference deformation are superimposed to achieve a deep fixing effect, further improve its sealing performance, and ensure the safety of storing dangerous goods in the storage container. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall three-dimensional structure of the sealing strip of the present invention; Figure 3 It is a schematic diagram of a half-section structure of a sealing strip of the present invention; Figure 4 It is a schematic diagram of the overall side structure of the present invention; Figure 5 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 6 It is a schematic diagram of the side structure of the sealing strip of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the sealing strip of the present invention; Figure 8 It is a partial enlarged structural schematic diagram of the sealing strip of the present invention; Fig. 9 Schematic diagram of the structure of the sealing strip of the present invention in the initial state and the working state, wherein a is the initial state and b is the working state; Fig.10 It is a schematic diagram of the posture of the sealing strip and the adsorption strip of the present invention when they are flipped and deformed; Fig.11 It is a schematic diagram of the structure of the spherical protrusions and strip grooves in a twisted and extruded state of the present invention; Fig.12 It is a finite element analysis cloud diagram of the overall compression state of the sealing strip and the adsorption strip of the present invention after being displaced 0.2 mm when pulled out from a single cross-sectional perspective; Fig.13 It is a finite element analysis cloud diagram of the overall compression state of the sealing strip and the adsorption strip of the present invention after being displaced 1mm when pulled out from a single cross-sectional perspective; Fig.14 The contact pressure distribution diagram of the inner side of the sealing strip of the present invention when the sealing plug is pulled out; Fig.15 A contact pressure distribution diagram of the sealing strip and the adsorption strip of the present invention when the sealing plug is pulled out; Fig.16 This is a diagram showing the pressure distribution of the spherical protrusion of the present invention when the sealing plug is pulled out.

[0013] The accompanying drawings are marked as follows: 1. storage container; 2. sealing plug; 3. accommodating chamber; 4. sealing strip; 5. adsorption strip; 6. annular notch; 7. spherical protrusion; 8. strip groove; 9. spherical notch; 10. arc-shaped bottle mouth. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] As attached Figure 1 To Attachment Fig.16The storage device for isocyanate is shown, comprising a storage container 1, a sealing plug 2 is detachably mounted on the top of the storage container 1, a receiving chamber 3 is provided inside the storage container 1, a sealing strip 4 is attached to the side of the sealing plug 2, adsorption strips 5 are integrally formed on the upper and lower sides of the sealing strip 4, an annular notch 6 is formed between the two adsorption strips 5, a spherical protrusion 7 is fixedly connected at the connecting corners of the two adsorption strips 5 and the sealing strip 4, strip grooves 8 are equidistantly spaced in the circumferential direction inside the spherical protrusion 7, and the bottom ends of the strip grooves 8 are connected and provided with a spherical notch 9, the two spherical protrusions 7 are respectively located at the oblique upper position and the oblique lower position of the annular notch 6, and the overall cross-section of the sealing strip 4 and the adsorption strip 5 is concave. By using the above arrangement, it can be ensured that when the sealing strip 4 and the adsorption strip 5 are tilted and deformed by external force, they can always be adaptively deformed through the strip groove 8 on the spherical protrusion 7 and the annular notch 6 formed between the two adsorption strips 5. Therefore, when the sealing plug 2 is taken out, the adsorption strip 5 and the sealing strip 4 share the local pressure generated by it, avoiding the problem of plastic deformation caused by uneven pressure on the adsorption strip 5 and the sealing strip 4, and effectively extending their service life; The two adsorption strips 5 and the annular notch 6 satisfy the following movement rules: in the initial state, one of the adsorption strips 5 located above the sealing strip 4 maintains an outward tilted posture, and an obtuse angle is maintained between the adsorption strip 5 and the sealing strip 4, and the other adsorption strip 5 located below the sealing strip 4 maintains a vertical horizontal state; In the working state, the two adsorption strips 5 are both kept in a vertical and horizontal posture, and the annular notch 6 at the middle position of the two adsorption strips 5 is squeezed by external force, so that the whole is compressed and deformed. By adopting the movement law of the adsorption strips 5 and the annular notch 6, when the sealing plug 2 is fixed, the adsorption strips 5 and the sealing strip 4 on the periphery always have a pre-tightening force that expands outward as a whole, further improving the sealing effect; The spherical protrusion 7 as a whole protrudes outward, and the strip groove 8 gradually shrinks in an inclined shape from the outside to the inside toward the direction of the spherical notch 9, and the depth of the strip groove 8 is ≤ the radius of the spherical protrusion 7. The cross-section of the spherical notch 9 is circular as a whole, and the diameter of the spherical notch 9 is larger than the distance between the end portions of the strip grooves 8. The above arrangement ensures that when the spherical protrusion 7 is squeezed by an external force, the strip groove 8 inside it can provide an effective shrinkage deformation margin to enhance its deformation capacity. At the same time, the spherical notch 9 set at the end of the strip groove 8 has a circular cross-section as a whole, ensuring that after multiple deformation and shrinkage of the strip groove 8, the stress generated by the deformation at its end will be evenly dispersed throughout the spherical notch 9, thereby avoiding the undesirable situation that the inside of the spherical protrusion 7 is torn due to excessive stress at the end of the strip groove 8, thereby effectively improving the working life of the structure.

[0016] The top of the reservoir 1 is provided with an arc-shaped bottle mouth 10, and the surface of the arc-shaped bottle mouth 10 is smooth. The bottom end of the sealing plug 2 extends to the inside of the reservoir 1, and the sealing plug 2 is made of elastic material as a whole. The sealing plug 2 and the sealing strip 4 are interference fit with the bottle mouth of the reservoir 1 as a whole. The positions of the annular groove 6 and the sealing strip 4 are symmetrically distributed. The adsorption strip 5 is L-shaped as a whole, and the corners of the adsorption strip 5 on one side close to the annular groove 6 are rounded. Through the above-mentioned arrangement, it is ensured that when the adsorption strip 5 contacts the inner wall of the reservoir 1, the sliding between the two is relatively smooth, and the problem of contact dead angle is not easy to occur.

[0017] Among them, Fig.12 , Fig.13 As shown, the deformation process of the entire sealing strip 4 after being compressed when the sealing plug 2 is pulled out obliquely is analyzed. Fig.12 , Fig.13 The cloud diagrams of the surface pressure of the entire sealing strip 4 under the conditions of 0.2 mm and 1 mm respectively show that after being compressed, some deformation will occur inside it to cope with the pressure when the sealing plug 2 moves, such as Fig.14 As shown in FIG. 1 , this is the contact pressure of the inner side of the sealing strip 4 at different moving distances. It can be seen that as the sealing plug 2 is pulled out, the contact pressure on the sealing strip 4 is continuously reduced. Fig.15 As shown, this is the pressure of the sealing strip 4 and the adsorption strip 5 at different distances when the sealing plug 2 is pulled out. It can be seen that negative pressure is generated in the internal area, and the pressure value becomes smaller and smaller as the bottle plug is pulled out, indicating that the sealing effect produced in the static state is good. Fig.16 As shown, this is the pressure condition of the spherical protrusion 7 at different deformation distances. The spherical protrusion 7 is continuously squeezed and shrinks and deforms, thereby sharing the internal pressure of the sealing strip 4 and the adsorption strip 5 during deformation. This shows that when the sealing plug 2 is pulled out, the pressure can be dispersed to the sealing strip 4 and the adsorption strip 5 through the shrinkage deformation of the spherical protrusion 7, avoiding permanent deformation of the sealing strip 4 and the adsorption strip 5 due to local uneven force, thereby ensuring the service life of the structure.

[0018] Among them, when the sealing plug 2 is fixed, the adsorption strip 5 above the sealing strip 4 and the spherical protrusion 7 are adaptively deformed and compressed, and when the sealing plug 2 is taken out, the adsorption strip 5 below the corresponding sealing strip 4 and the spherical protrusion 7 are adaptively deformed and compressed, thereby meeting its different usage conditions. In various usage conditions, the external compressive force formed between the sealing plug 2 and the reservoir 1 is evenly distributed, thereby extending the service life of the sealing plug 2 and improving its sealing effect.

[0019] For details, please refer to the attached manual Figure 3 and attached Figure 8The sealing strip 4, the adsorption strip 5 and the spherical protrusion 7 are all made of elastic rubber material.

[0020] The specific implementation method is as follows: by utilizing the material settings of the sealing strip 4, the adsorption strip 5 and the spherical protrusion 7, sufficient movement space margin can be provided between the sealing plug 2 and the reservoir 1 during the process of fixing and removing the sealing plug 2, so that the pressure force between the sealing plug 2 and the bottle mouth of the reservoir 1 on the sealing strip 4 can be evenly distributed, thereby avoiding the problem of permanent deformation of the sealing strip 4 caused by external force applied to a certain point.

[0021] For details, please refer to the attached manual Figure 8 The spherical protrusion 7 is arranged at the connection between the adsorption strip 5 and the sealing strip 4 and on a side surface away from the annular notch 6.

[0022] The specific implementation method is as follows: by utilizing the design of the spherical protrusion 7 and the annular groove 6, during the fixing process, the sealing strip 4 can drive the adsorption strips 5 on both sides to twist toward one side of the annular groove 6 through the rotational deformation tendency of the spherical protrusion 7, thereby squeezing the annular groove 6 to form a local negative pressure area between it and the bottle wall of the storage container 1, so that the sealing strip 4 is compressed by the atmospheric pressure and adsorbed to the cup wall of the storage container 1, thereby completing effective fixation and achieving the purpose of full sealing.

[0023] Working principle of the present invention: Step 1: First, the operator assembles the various components of the device normally, and then uses the device normally.

[0024] Step 2: First, the operator inserts the sealing plug 2 into the storage container 1, and in the process of fixing, the operator presses the adsorption strip 5 inclined outward on the sealing strip 4 inward through the bottle wall of the storage container 1, so that it gradually tends to a vertical posture, and in the process of pressing, the setting of the spherical protrusion 7 and the strip groove 8 is utilized, and the rotational deformation trend of the spherical protrusion 7 is used to drive the multiple strip grooves 8 inside itself to be compressed, and drive the adsorption strip 5 on one side to twist toward one side of the annular notch 6, thereby squeezing the annular notch 6 and the adsorption strip 5 on one side. The space between the reservoirs 1 reduces its volume, thereby forming a local negative pressure area between the bottle wall of the reservoir 1 and the annular notch 6. At this time, the atmospheric pressure is pressed onto the sealing strip 4 and adsorbed onto the cup wall of the reservoir 1, thereby completing effective fixation. The interference fit between the two adsorption strips 5 and the sealing strip 4 and the reservoir 1 is utilized, and the fixed plug is tightly attached to the reservoir 1 after natural deformation, achieving the purpose of deep fixation after the double-layer effect is superimposed. When the sealing plug 2 is pulled out, when the sealing plug 2 is pulled out vertically, the outer The force overcomes the friction between the adsorption strip 5 and the storage container 1 and the negative pressure effect of the local area, and it can be directly pulled out (in this process, since the pressure on the sealing plug 2 is uniform at all places, the sealing strip 4 and the adsorption strip 5 will not cause the problem of excessive local pressure). When the sealing plug 2 is pulled out in an inclined posture by tilting to one side, the spherical protrusions 7 at the corners of the adsorption strip 5 and the sealing strip 4 can be used to shrink and deform by using the strip grooves 8 inside themselves, so that the local pressure caused by the inclined pulling out between the sealing plug 2 and the storage container 1 is dispersed and transmitted to the adsorption strip 5 and the sealing strip 4 as a whole, and the position of the annular notch 6 is gradually squeezed by the adsorption strip 5 and the sealing strip 4, so that when the adsorption strip 5 and the sealing strip 4 are compressed, the whole is always in a state with a deformation margin, thereby effectively avoiding the problem of uneven force on the local sealing strip 4 and the adsorption strip 5 after being compressed, and the occurrence of permanent deformation. Finally, the device completes the working purpose of effective sealing and lossless pulling out of the storage container 1, which can ensure the safety of m-phenylenedimethyl isocyanate during long-term storage in the laboratory.

[0025] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aging and severely worn parts inside the device.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A storage device for meta-xylylene diisocyanate, comprising a storage container, a sealing plug is detachably mounted on the top of the storage container, and a receiving cavity is provided inside the storage container, wherein: A circle of sealing strip is pasted on the side of the sealing plug, and adsorption strips are integrally formed on the upper and lower sides of the sealing strip, and an annular notch is formed between the two adsorption strips. A spherical protrusion is fixedly connected to the connecting corners of the two adsorption strips and the sealing strip, and the inside of the spherical protrusion is circumferentially equidistantly provided with strip grooves, and the bottom ends of the strip grooves are connected and provided with a spherical notch, and the two spherical protrusions are respectively located at the oblique upper position and the oblique lower position of the annular notch, and the overall cross-section of the sealing strip and the adsorption strip is concave; The two adsorption strips and the annular notch satisfy the following movement rules: in the initial state, one of the adsorption strips located above the sealing strip maintains an outward tilted posture, and an obtuse angle is maintained between the adsorption strip and the sealing strip, and the other adsorption strip located below the sealing strip maintains a vertical horizontal state; In the working state, the two adsorption strips are kept in a vertical and horizontal posture, and the annular notches in the middle of the two adsorption strips are squeezed by external force, so that the whole is compressed and deformed; The spherical protrusion protrudes outward as a whole, and the strip groove gradually shrinks in an inclined manner from the outside to the inside toward the direction of the spherical groove mouth, and the depth of the strip groove is ≤ the radius of the spherical protrusion. The cross-section of the spherical groove mouth is circular as a whole, and the diameter of the spherical groove mouth is larger than the distance between the extreme ends of the strip groove.

2. The m-xylylene diisocyanate storage device according to claim 1, characterized in that: The sealing strip, the adsorption strip and the spherical protrusion are all made of elastic rubber material.

3. The m-xylylene diisocyanate storage device according to claim 1, characterized in that: The top of the storage container is provided with an arc-shaped bottle mouth, and the surface of the arc-shaped bottle mouth is smooth.

4. The m-xylylene diisocyanate storage device according to claim 1, characterized in that: The bottom end of the sealing plug extends to the interior of the storage container, and the sealing plug is made of elastic material as a whole. The sealing plug and the sealing strip as a whole are in interference fit with the bottle mouth of the storage container.

5. The m-xylylene diisocyanate storage device according to claim 1, characterized in that: The spherical protrusion is arranged on a side surface of the connection between the adsorption strip and the sealing strip and away from the annular notch.

6. The m-xylylene diisocyanate storage device according to claim 1, characterized in that: The positions of the annular notch and the sealing strip are symmetrically distributed, the adsorption strip is L-shaped as a whole, and the corners of the adsorption strip on one side close to the annular notch are all rounded.

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