Y-shaped liquid nitrogen vacuum valve

Abstract

The utility model is suitable for the technical field of vacuum valves, and provides a Y-shaped liquid nitrogen vacuum valve which comprises a valve body, and a protective sleeve used for protecting the valve body is arranged on the valve body. The liquid inlet female joint is fixedly mounted at one end of the valve body; the liquid outlet male joint is fixedly mounted at the other end of the valve body; the valve handle is assembled on the valve body; the safety valve connector is arranged on the valve body; the pressure spring is assembled in the valve handle; and the outer layer O-shaped sealing ring is assembled in the valve handle. According to the Y-shaped liquid nitrogen vacuum valve, in the actual using process, the using safety of liquid nitrogen can be effectively guaranteed, meanwhile, the bad conditions such as infusion frosting and air leakage caused by cold conduction at the position of the valve handle can be prevented, and the using safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum valves, and in particular relates to a Y-shaped liquid nitrogen vacuum valve. Background Art

[0002] In the beverage, food, oil, condiment, semiconductor and other industries, liquid nitrogen is widely used for preservation, pressurization and cooling. In these industries, most equipment must be blocked at the front end with a liquid nitrogen valve, and then the equipment is maintained and repaired. In the application scenario, when the vacuum pipe is installed vertically to the ground, since liquid nitrogen is a low-temperature liquid and easily conducts heat and vaporization characteristics, when a T-type liquid nitrogen vacuum valve is used, the valve is parallel to the ground, and the liquid nitrogen flows in the direction of the valve handle, which is easy to conduct cold water, frost or cause leakage risks. Utility Model Content

[0003] The utility model provides a Y-type liquid nitrogen vacuum valve, aiming to solve the problem that some common T-type liquid nitrogen vacuum valves proposed in the above background technology are prone to water frost or leakage risk.

[0004] To solve the above problems, the utility model is implemented as follows: a Y-type liquid nitrogen vacuum valve, comprising: a valve body, the valve body is provided with a protective sleeve for protecting the valve body; a liquid inlet female joint, the liquid inlet female joint is fixedly installed on one end of the valve body; a liquid outlet male joint, the liquid outlet male joint is fixedly installed on the other end of the valve body; a valve handle, the valve handle is assembled on the valve body; a safety valve interface, the safety valve interface is arranged on the valve body; a compression spring, the compression spring is assembled in the valve handle; an outer O-type sealing ring, the outer O-type sealing ring is assembled in the valve handle; a control mechanism for controlling the circulation of liquid nitrogen, the control mechanism is arranged on the valve body and the valve handle.

[0005] Preferably, the control mechanism includes a valve seat, a first low-temperature resistant sealing sheet, a second low-temperature resistant sealing sheet, a valve stem and a liquid-stopping screw, the valve seat is assembled in the valve body, the valve stem is arranged in the valve handle, and the valve stem and the compression spring are connected, the first low-temperature resistant sealing sheet is assembled on the valve stem, the second low-temperature resistant sealing sheet is assembled on the valve stem, the liquid-stopping screw is arranged in the valve seat, and the liquid-stopping screw and the second low-temperature resistant sealing sheet are adapted to each other.

[0006] Preferably, the end of the leak-proof screw close to the valve seat is in the shape of an inner tapered funnel.

[0007] Preferably, a vacuum layer is provided in the valve body, a vacuum port is provided on the valve body, the vacuum layer and the vacuum port are communicated with each other, and the vacuum port is used for vacuuming by an external vacuum pumping unit.

[0008] Preferably, protective cotton is arranged inside the protective sleeve, and a plurality of friction points for contacting and rubbing with the valve body are arranged on the protective sleeve.

[0009] Preferably, the protective cover is provided with a Velcro sub-surface, and the protective cover is provided with a Velcro parent surface, and the Velcro sub-surface and the Velcro parent surface are adapted to each other.

[0010] Preferably, the protective cover is provided with two avoidance openings, and the two avoidance openings are used to avoid the valve handle and the safety valve interface respectively.

[0011] Compared with the related art, the Y-type liquid nitrogen vacuum valve provided by the utility model has the following beneficial effects:

[0012] Compared with the existing technology, the Y-type liquid nitrogen vacuum valve provided by this solution:

[0013] A Y-shaped liquid nitrogen vacuum valve is formed by the valve body, the liquid inlet female joint, the liquid outlet male joint, the valve handle, the safety valve interface, the compression spring, the outer O-ring, the control mechanism, the vacuum layer and the vacuum port. In actual use, the safety of liquid nitrogen use can be effectively guaranteed and water frost caused by cold conduction at the valve handle can be prevented. The vacuum port is used to evacuate the vacuum unit so that the vacuum layer reaches a high vacuum state, thereby isolating heat and preventing liquid nitrogen vaporization loss caused by heat conduction and water frost on the valve body surface. The protective cover can well protect the valve body. On the one hand, it can reduce the water frost on the valve body, and on the other hand, it can protect the surface of the valve body and reduce the stain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of a Y-type liquid nitrogen vacuum valve provided by the utility model;

[0015] Figure 2 This is a schematic diagram of the main cross-sectional structure of a Y-type liquid nitrogen vacuum valve provided by the utility model;

[0016] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in FIG.

[0017] Figure 4 for Figure 2 An enlarged schematic diagram of the structure of part B shown in FIG.

[0018] Figure 5 It is a partial cross-sectional structural schematic diagram of the protective cover of the utility model.

[0019] Figure numerals: 1. valve body; 101. protective cover; 1011. protective cotton; 1012. friction point; 1013. Velcro sub-surface; 1014. Velcro female surface; 2. liquid inlet female connector; 3. liquid outlet male connector; 4. valve handle; 5. safety valve interface; 6. compression spring; 7. outer O-ring; 8. control mechanism; 801. valve seat; 802. first low-temperature resistant sealing plate; 803. second low-temperature resistant sealing plate; 804. valve stem; 805. liquid stop screw; 9. vacuum layer; 10. vacuum port. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model embodiment provides a Y-shaped liquid nitrogen vacuum valve, such as Figure 1-5As shown, the Y-type liquid nitrogen vacuum valve comprises: a valve body 1, on which a protective sleeve 101 for protecting the valve body 1 is provided; a liquid inlet female joint 2, which is fixedly mounted on one end of the valve body 1; a liquid outlet male joint 3, which is fixedly mounted on the other end of the valve body 1; a valve handle 4, which is assembled on the valve body 1; a safety valve interface 5, which is arranged on the valve body 1; a compression spring 6, which is assembled in the valve handle 4; an outer O-type sealing ring 7, which is assembled in the valve handle 4; and a control mechanism 8 for controlling the circulation of liquid nitrogen, which is arranged on the valve body 1 and the valve handle 4.

[0023] In this embodiment, during actual use, liquid nitrogen enters the valve body 1 through the liquid inlet female connector 2, and is then discharged through the liquid outlet male connector 3, thereby playing a role in circulating the liquid nitrogen. At the same time, under the action of the control mechanism 8, the circulation and blocking of the liquid nitrogen can be well guaranteed, and the safety of the use of liquid nitrogen can be effectively guaranteed, and the situation of water hanging and frosting caused by cold conduction at the valve handle 4 can be prevented. At the same time, during actual use, the compression spring 6 compresses the outer O-ring 7 to prevent the outer O-ring 7 from loosening and causing air leakage and other undesirable conditions, thereby improving the safety of use.

[0024] In a further preferred embodiment of the utility model, the control mechanism 8 includes a valve seat 801, a first low-temperature resistant sealing piece 802, a second low-temperature resistant sealing piece 803, a valve stem 804 and a liquid-stopping screw 805, the valve seat 801 is assembled in the valve body 1, the valve stem 804 is arranged in the valve handle 4, and the valve stem 804 is connected to the compression spring 6, the first low-temperature resistant sealing piece 802 is assembled on the valve stem 804, the second low-temperature resistant sealing piece 803 is assembled on the valve stem 804, the liquid-stopping screw 805 is arranged in the valve seat 801, and the liquid-stopping screw 805 and the second low-temperature resistant sealing piece 803 are adapted to each other.

[0025] In the present embodiment, in actual use, when liquid nitrogen is transmitted through the vacuum pipeline and flows to the liquid inlet female joint 2 of the Y-type liquid nitrogen vacuum valve, when the Y-type liquid nitrogen vacuum valve is in a closed state, the first low-temperature resistant sealing sheet 802 fits tightly with the inner tapered end of the valve seat 801 to achieve a sealing effect, thereby blocking the transmission of liquid nitrogen. The end of the leak-proof liquid screw 805 close to the valve seat 801 is in the shape of an inner taper funnel. When the Y-type liquid nitrogen vacuum valve is fully opened, the second low-temperature resistant sealing sheet 803 fits tightly with the inner taper funnel of the leak-proof liquid screw 805 to achieve a sealing effect, thereby allowing the low-temperature liquid nitrogen to pass through the valve seat 801. It cannot flow to the valve stem 804. The outer O-ring 7 is an outer reinforced seal, so that an airtight state is formed between the leak-proof screw 805 and the outer O-ring 7, which further ensures the safety of liquid nitrogen use and prevents water and frost caused by cold conduction at the valve handle 4. The compression spring 6 compresses the outer O-ring 7 to prevent the outer O-ring 7 from loosening and causing leakage and other adverse conditions. The vacuum port 10 is used for vacuuming the vacuum unit to make the vacuum layer 9 reach a high vacuum state, thereby isolating and preventing liquid nitrogen vaporization loss caused by heat conduction and water and frost on the surface of the valve body 1.

[0026] In a further preferred embodiment of the present invention, the end of the leak-proof screw 805 close to the valve seat 801 is in the shape of an inner tapered funnel.

[0027] In this embodiment, the end of the anti-leakage screw 805 close to the valve seat 801 is in the shape of an inner taper funnel, so that the anti-leakage screw 805 and the valve seat 801 can be better sealed.

[0028] In a further preferred embodiment of the utility model, a vacuum layer 9 is provided in the valve body 1, a vacuum port 10 is opened on the valve body 1, the vacuum layer 9 is connected to the vacuum port 10, and the vacuum port 10 is used for vacuuming by an external vacuum pumping unit.

[0029] In this embodiment, the vacuum port 10 is used for vacuuming the vacuum unit to make the vacuum layer 9 reach a high vacuum state, thereby isolating heat and preventing liquid nitrogen vaporization loss caused by heat conduction and water frost on the surface of the valve body 1.

[0030] In a further preferred embodiment of the utility model, a protective cotton 1011 is arranged inside the protective sleeve 101 , and a plurality of friction points 1012 for contacting and rubbing with the valve body 1 are arranged on the protective sleeve 101 .

[0031] In this embodiment, the protective cover 101 can provide good protection for the valve body 1. On the one hand, it can reduce the situation of water and frost on the valve body 1. On the other hand, it can protect the surface of the valve body 1 and reduce the situation of being stained by stains. The friction point 1012 can increase the friction between the protective cover 101 and the valve body 1.

[0032] In a further preferred embodiment of the utility model, the protective cover 101 is provided with a Velcro sub-surface 1013, and the protective cover 101 is provided with a Velcro mother surface 1014, and the Velcro sub-surface 1013 and the Velcro mother surface 1014 are adapted to each other.

[0033] In this embodiment, the protective cover 101 is conveniently fixed on the valve body 1 by the mutual cooperation between the Velcro sub-surface 1013 and the Velcro main surface 1014, so as to protect the valve body 1.

[0034] In a further preferred embodiment of the utility model, two avoidance openings are provided on the protective cover 101 , and the two avoidance openings are used to avoid the valve handle 4 and the safety valve interface 5 respectively.

[0035] In this embodiment, the valve handle 4 and the safety valve interface 5 are conveniently avoided through the avoidance opening, so that the protective cover 101 can be well fixed on the valve body 1.

[0036] To sum up, compared with the relevant technology, a Y-type liquid nitrogen vacuum valve is formed by the valve body 1, the liquid inlet female connector 2, the liquid outlet male connector 3, the valve handle 4, the safety valve interface 5, the compression spring 6, the outer O-ring 7, the control mechanism 8, the vacuum layer 9 and the vacuum port 10. In the actual use process, the safety of liquid nitrogen use can be effectively guaranteed and the water frost caused by cold conduction at the valve handle 4 can be prevented. The vacuum port 10 is used for vacuuming the vacuum unit, so that the vacuum layer 9 reaches a high vacuum state, thereby isolating and preventing the loss of liquid nitrogen vaporization caused by heat conduction and the water frost on the surface of the valve body 1. The protective cover 101 can play a good protective role on the valve body 1. On the one hand, it can reduce the water frost on the valve body 1, and on the other hand, it can protect the surface of the valve body 1 and reduce the stain.

[0037] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0038] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A Y-type liquid nitrogen vacuum valve, characterized in that: include: A valve body, wherein a protective sleeve is provided on the valve body for protecting the valve body; A liquid inlet female connector, the liquid inlet female connector being fixedly mounted on one end of the valve body; A liquid outlet male connector, the liquid outlet male connector is fixedly mounted on the other end of the valve body; A valve handle, the valve handle being assembled on the valve body; A safety valve interface, wherein the safety valve interface is arranged on the valve body; a compression spring, the compression spring being assembled in the valve handle; An outer O-ring, the outer O-ring being assembled in the valve handle; A control mechanism for controlling the circulation of liquid nitrogen is provided on the valve body and the valve handle.

2. The Y-type liquid nitrogen vacuum valve according to claim 1, characterized in that: The control mechanism includes a valve seat, a first low-temperature resistant sealing sheet, a second low-temperature resistant sealing sheet, a valve stem and a leak-proof screw. The valve seat is assembled in the valve body, the valve stem is arranged in the valve handle, and the valve stem and the compression spring are connected, the first low-temperature resistant sealing sheet is assembled on the valve stem, the second low-temperature resistant sealing sheet is assembled on the valve stem, the leak-proof screw is arranged in the valve seat, and the leak-proof screw and the second low-temperature resistant sealing sheet are adapted to each other.

3. The Y-type liquid nitrogen vacuum valve according to claim 2, characterized in that: The end of the anti-leakage screw close to the valve seat is in the shape of an inner taper funnel.

4. The Y-type liquid nitrogen vacuum valve according to claim 1, characterized in that: A vacuum layer is arranged in the valve body, a vacuum port is opened on the valve body, the vacuum layer and the vacuum port are communicated, and the vacuum port is used for vacuuming by an external vacuum pumping unit.

5. The Y-type liquid nitrogen vacuum valve according to claim 1, characterized in that: The interior of the protective sleeve is provided with protective cotton, and the protective sleeve is provided with a plurality of friction points for contacting and rubbing with the valve body.

6. The Y-type liquid nitrogen vacuum valve according to claim 1, characterized in that: The protective cover is provided with a Velcro sub-surface, and the protective cover is provided with a Velcro mother surface, and the Velcro sub-surface is matched with the Velcro mother surface.

7. The Y-type liquid nitrogen vacuum valve according to claim 1, characterized in that: The protective cover is provided with two avoidance openings, and the two avoidance openings are respectively used for avoiding the valve handle and the safety valve interface.

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