Vacuum inspection port sealing device

Abstract

The utility model relates to a vacuum inspection port sealing device which comprises a vacuum detection shell fixedly installed on vacuum equipment, a detection cavity and a sealing cavity are formed in the vacuum detection shell, a sliding hole is formed in the upper end of the vacuum detection shell, and an insertion rod is movably inserted into the sliding hole in a sealed mode. A first sealing ring is embedded in the inner side wall of the top end of the sealing cavity, an elastic assembly is arranged in the detection cavity, a sealing head is coaxially arranged in the sealing cavity, an extrusion alarm cavity is formed in the first sealing ring, and a first contact and a second contact are fixedly connected to the opposite faces of the extrusion alarm cavity respectively. An external power supply positive electrode, the alarm, the switch and the second contact are communicated through wires, a power supply negative electrode is communicated with the first contact through a wire, and a vacuum degree detection probe is elastically connected into the side face of the inserting rod. According to the structure provided by the embodiment of the invention, the vacuum degree of the equipment can be conveniently detected, and an alarm can be timely given when the sealing performance cannot meet the requirement.

Description

Technical Field

[0001] This application relates to the technical field of vacuum detection, and particularly relates to a sealing device for a vacuum detection inlet. Background Art

[0002] A vacuum device is a device for generating, improving, and / or maintaining a vacuum, including vacuum application devices and vacuum acquisition devices. When an ordinary vacuum device detects the vacuum degree, a vacuum detection probe is used to detect the vacuum degree inside the vacuum degree detection port. After long-term use, the sealing performance of the vacuum detection port fails to meet the requirements, and if the detection is not timely enough, it will affect the vacuum degree of the device. Therefore, we propose a sealing device for a vacuum detection inlet. Utility Model Content

[0003] This application provides a sealing device for a vacuum detection inlet to solve the technical problems raised in the above background art.

[0004] To achieve the above object, the technical solutions adopted in this application are as follows:

[0005] A sealing device for a vacuum detection inlet, the key points are as follows: it includes a vacuum detection housing fixedly installed on a vacuum device. Inside the vacuum detection housing, a detection cavity and a sealing cavity that are connected to each other are sequentially arranged vertically from bottom to top. A sliding hole communicating with the sealing cavity is vertically opened at the upper end of the vacuum detection housing. The detection cavity, the sealing cavity, the sliding hole and the vacuum detection housing are coaxially arranged, and the detection cavity is connected to the vacuum cavity of the vacuum device. A plugging rod is movably and sealingly inserted vertically in the sliding hole. A first sealing ring is embedded on the inner side wall at the top of the sealing cavity. An elastic component with an upward vertical elastic force direction is arranged in the detection cavity. A spherical sealing head is coaxially arranged in the sealing cavity. The outer surface of the sealing head abuts against the inner surface of the first sealing ring under the elastic force of the elastic component. An extrusion alarm cavity is formed inside the first sealing ring. A first contact and a second contact are respectively fixedly connected to the opposite surfaces of the extrusion alarm cavity. The positive pole of an external power supply, an alarm, a switch, and the second contact are connected through a wire. The negative pole of the power supply is connected to the first contact through a wire. The side inner part of the plugging rod is elastically connected with a vacuum degree detection probe. The vacuum degree detection probe abuts against the inner side wall of the sliding hole under the action of elastic force.

[0006] Preferably, a sealing layer is fixedly coated on the outer surface of the sealing head. The inner surface of the first sealing ring is a concave arc surface, and the sealing layer is extrusion-fitted with the concave arc surface. A plurality of second sealing rings for sealing the gap between the sliding hole and the plugging rod are fixedly connected to the outside of the plugging rod at intervals vertically.

[0007] Preferably, the elastic component includes a first spring. A plugging groove is vertically formed upward at the bottom end of the sealing head. The top end of the first spring is fixedly connected to the inner top wall of the plugging groove. The bottom end of the first spring is fixedly connected to a connecting plate. The connecting plate and the vacuum detection housing are fixedly connected by a connecting rod.

[0008] Preferably, the vacuum degree detection probe is fixedly connected to the inner cavity of the movable head. A communication port is formed at the left end of the movable head. A limiting plate is fixedly connected to the right end of the movable head. A cylindrical cavity and a storage cavity are formed on the side surface of the plugging rod. The limiting plate is slidably received in the storage cavity, and the movable head is received in the cylindrical cavity. The limiting plate and the inner side wall of the storage cavity are fixedly connected by a second spring.

[0009] Preferably, a limiting ring is coaxially arranged above the vacuum detection housing. The plugging rod is coaxially and movably inserted into the limiting ring. A retaining ring is fixedly connected to the outer side of the plugging rod. The top end of the retaining ring abuts against the bottom end of the limiting ring. Connecting rods are respectively fixedly connected to both sides of the limiting ring. The connecting rods are fixedly connected to the top end of the vacuum detection housing.

[0010] Due to the adoption of the above structure, compared with the prior art, the technical progress achieved by this application is as follows: When detecting the vacuum degree inside the equipment in this application, by manually pressing the plugging rod downward, the plugging rod moves downward, and the sealing head is pressed downward until the pressing sealing head moves into the detection cavity. When the plugging rod continues to move downward, since the vacuum degree detection probe is not in contact with the inner wall of the sliding hole, it will enter the detection cavity from the inside of the plugging rod under the action of elastic force. The vacuum degree inside the detection cavity is detected by the vacuum degree detection probe. After the detection is completed, release the hand, and the sealing head and the plugging rod both return to their original positions under the elastic force of the elastic component, and the vacuum degree detection probe will be received inside the plugging rod. And when the sealing degree of the sealing cavity fails to meet the requirements, air will enter the inside of the equipment. At this time, the external pressure on the sealing head becomes smaller, so the elastic force of the elastic component applied to the sealing head becomes larger, which will squeeze the first sealing ring, and thus squeeze the first contact and the second contact. The first contact and the second contact come into contact with each other, so that the circuit connected to the alarm, the switch, and the power supply is closed. And when the switch is in the closed state, the alarm will sound an alarm, reminding the staff that the vacuum degree inside the equipment has changed. This application can conveniently detect the vacuum degree of the equipment and can alarm in time when the sealing performance fails to meet the requirements. Description of the Drawings

[0011] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing the embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0012] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0013] In the drawings:

[0014] Figure 1 is a structural sectional view of an embodiment of the present application;

[0015] Figure 2 is Figure 1 an enlarged view of part A in

[0016] Figure 3 is Figure 1 an enlarged view of part B in

[0017] In the figure: 1, vacuum detection housing; 2, detection chamber; 3, connecting plate; 4, connecting rod; 5, first spring; 6, sealing head; 7, sealing chamber; 8, first sealing ring; 9, insertion rod; 10, limiting ring; 11, connecting rod; 12, second sealing ring; 13, retaining ring; 14, sealing layer; 15, alarm; 16, switch; 17, power supply; 18, extrusion alarm chamber; 19, first contact; 20, second contact; 21, cylindrical chamber; 22, storage chamber; 23, limiting plate; 24, second spring; 25, movable head; 26, vacuum degree detection probe; 27, communication port; 28, insertion slot. Specific embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0019] Various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and brevity, and should not be construed as a rigid limitation on the scope of the present application. Therefore, it should be considered that the described range description has specifically disclosed all possible sub-ranges and single values within that range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., and single numbers within the range, such as 1, 2, 3, 4, 5, and 6, which applies regardless of the range. Additionally, whenever a numerical range is indicated in the present application, it means including any cited numbers (fractions or integers) within the indicated range. Unless otherwise specifically stated, various raw materials, reagents, instruments, and equipment used in the present application can be obtained through market purchases or can be prepared using existing equipment.

[0020] In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" specifically refer to the drawing direction in the drawings. Additionally, in the present application, terms such as "including" and "comprising" mean "including but not limited to". In the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the present application, "and / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, or B exists alone. Where A and B can be singular or plural. In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one kind", "at least one item (piece) below" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one item (piece) of a, b, or c", or, "at least one item (piece) of a, b, and c" can both represent: a, b, c, a - b (i.e., a and b), a - c, b - c, or a - b - c, where a, b, and c can be single or multiple respectively.

[0021] Such as Figures 1 - 3As shown in the figure, an embodiment of the present application provides a vacuum inspection port sealing device, which includes a vacuum detection housing 1 fixedly installed on a vacuum device. Inside the vacuum detection housing 1, a detection cavity 2 and a sealing cavity 7 that are connected to each other are successively formed from bottom to top in the vertical direction. A sliding hole is formed in the upper end of the vacuum detection housing 1 in the vertical direction, and the sliding hole is connected to the sealing cavity 7. The detection cavity 2, the sealing cavity 7, and the sliding hole are coaxially arranged with the vacuum detection housing 1. The detection cavity 2 is connected to the vacuum cavity of the vacuum device. A plugging rod 9 is movably and sealingly inserted in the sliding hole in the vertical direction. A first sealing ring 8 is fixedly embedded on the inner side wall of the top end of the sealing cavity 7. An elastic component with an upward vertical elastic direction is arranged in the detection cavity 2. A spherical sealing head 6 is coaxially arranged in the sealing cavity 7. The sealing head 6 is movably arranged in the sealing cavity 7. The outer surface of the sealing head 6 abuts against the inner surface of the first sealing ring 8 under the elastic force of the elastic component. An extrusion alarm cavity 18 is formed inside the first sealing ring 8. A first contact 19 and a second contact 20 are respectively fixedly connected to opposite surfaces of the extrusion alarm cavity 18. The positive electrode of an external power supply 17, an alarm 15, a switch 16, and the second contact 20 are connected through wires. The negative electrode of the power supply 17 is connected to the first contact 19 through a wire. A vacuum degree detection probe 26 is elastically connected inside the side surface of the plugging rod 9. The vacuum degree detection probe 26 is a prior art and is connected to a vacuum detection host through a signal wire. The vacuum degree detection probe 26 abuts against the inner side wall of the sliding hole under the action of elastic force. When the vacuum degree inside the device is detected in the embodiment of the present application, by manually pressing the plugging rod 9 downward, the plugging rod 9 moves downward, and the sealing head 6 is also pressed downward until the sealing head 6 is displaced into the detection cavity 2. When the plugging rod 9 continues to move downward, since the vacuum degree detection probe 26 no longer abuts against the inner wall of the sliding hole, it will enter the detection cavity 2 from inside the plugging rod 9 under the action of elastic force, and the vacuum degree inside the detection cavity 2 is detected by the vacuum degree detection probe 26. After the detection is completed, when the hand is released, the sealing head 6 and the plugging rod 9 return to their original positions under the elastic force of the elastic component, and the vacuum degree detection probe 26 will be received inside the plugging rod 9. And when the sealing degree of the sealing cavity 7 does not meet the requirements, air will enter the inside of the device. At this time, the external pressure on the sealing head 6 becomes smaller, so the elastic force of the elastic component applied to the sealing head 6 becomes larger, which will squeeze the first sealing ring 8, and thus squeeze the first contact 19 and the second contact 20. The first contact 19 and the second contact 20 come into contact with each other, so that the circuit connected to the alarm 15, the switch 16, and the power supply 17 is closed. And when the switch 16 is in the closed state, the alarm 15 will give an alarm to remind the staff that the vacuum degree inside the device has changed.

[0022] Specifically, a sealing layer 14 is fixedly coated on the outer surface of the sealing head 6. The inner surface of the first sealing ring 8 is a concave arc surface, and the sealing layer 14 is in extrusion fit with the concave arc surface, enabling the sealing of the sealing cavity 7. A plurality of second sealing rings 12 are fixedly connected to the outer side of the insertion rod 9, and the second sealing rings 12 are distributed at intervals in the vertical direction. By providing the second sealing rings 12, the gap between the sliding hole and the insertion rod 9 is sealed. The elastic component includes a first spring 5. The first spring 5 is always in a compressed state. An insertion slot 28 is opened upward in the vertical direction at the bottom end of the sealing head 6. The top end of the first spring 5 is fixedly connected to the inner top wall of the insertion slot 28, the bottom end of the first spring 5 is fixedly connected to the connecting plate 3, and the connecting plate 3 and the vacuum detection housing 1 are fixedly connected by a connecting rod 4.

[0023] In the vacuum degree detection probe 26 of the embodiment of the present application, it is fixedly connected to the inner cavity of the movable head 25. A communication port 27 is opened at the left end of the movable head 25. A limiting plate 23 is fixedly connected to the right end of the movable head 25. A cylindrical cavity 21 and a storage cavity 22 are opened on the side surface of the insertion rod 9. The limiting plate 23 is slidably stored in the storage cavity 22. The movable head 25 is stored in the cylindrical cavity 21. The limiting plate 23 and the inner side wall of the storage cavity 22 are fixedly connected by a second spring 24. A limiting ring 10 is coaxially arranged above the vacuum detection housing 1. The insertion rod 9 is coaxially and movably inserted into the limiting ring 10. A retaining ring 13 is fixedly connected to the outer side of the insertion rod 9. The top end of the retaining ring 13 abuts against the bottom end of the limiting ring 10. Connecting rods 11 are respectively fixedly connected to both sides of the limiting ring 10, and the connecting rods 11 are fixedly connected to the top end of the vacuum detection housing 1.

[0024] The working principle of the embodiment of the present application: When detecting the vacuum degree inside the equipment, by manually squeezing the insertion rod 9 downward, the insertion rod 9 moves downward, and squeezes the sealing head 6 to move downward until the extrusion sealing head 6 moves into the detection cavity 2. When the insertion rod 9 continues to move downward and the movable head 25 enters the detection cavity 2, the movable head 25 will extend out of the cylindrical cavity 21. The vacuum degree inside the equipment is detected by the vacuum degree detection probe 26. And the second sealing ring 12 can also seal the upper part of the sliding hole of the vacuum detection housing 1. After the detection is completed, the sealing head 6 and the insertion rod 9 both return to their original positions, and the movable head 25 will be stored inside the cylindrical cavity 21. And when the sealing layer 14 is damaged, or the sealing degree of the sealing cavity 7 fails to meet the requirements, air will enter the inside of the equipment. At this time, the external pressure on the sealing head 6 becomes smaller, so the elastic force of the first spring 5 applied to the sealing head 6 becomes larger, which will squeeze the first sealing ring 8, and thus will squeeze the first contact 19 and the second contact 20. The first contact 19 and the second contact 20 come into contact with each other, so that the circuit connected to the alarm 15, the switch 16, and the power supply 17 is closed. And when the switch 16 is in the closed state, the alarm 15 will give an alarm to remind the staff that the vacuum degree inside the equipment has changed.

[0025] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but rather will conform to the broadest scope consistent with the principles and novel features claimed in the present application.

Claims

1. A vacuum inspection inlet sealing device, characterized in that: The invention comprises a vacuum detection shell fixedly mounted on the vacuum equipment, wherein the interior of the vacuum detection shell is provided with a detection chamber and a sealing chamber which are interconnected in sequence from bottom to top vertically, and a sliding hole which is connected to the sealing chamber is provided vertically at the upper end of the vacuum detection shell, and the detection chamber, the sealing chamber, and the sliding hole are coaxially arranged with the vacuum detection shell, and the detection chamber is connected to the vacuum chamber of the vacuum equipment, and a plug-in rod is plugged in the sliding hole along the vertical movable seal, a first sealing ring is embedded on the inner side wall of the top end of the sealing chamber, and an elastic component with the elastic force direction being vertically upward is provided in the detection chamber. A spherical sealing head is coaxially arranged in the sealing cavity, and the outer surface of the sealing head abuts against the inner surface of the first sealing ring under the elastic force of the elastic component. An extrusion alarm cavity is formed in the first sealing ring, and the first contact and the second contact are fixedly connected to the opposite surfaces of the extrusion alarm cavity respectively. The positive pole of the external power supply, the alarm, the switch, and the second contact are connected through a wire, and the negative pole of the power supply is connected to the first contact through a wire. A vacuum detection probe is elastically connected to the inside of the side of the plug-in rod, and the vacuum detection probe abuts against the inner wall of the sliding hole under the action of elastic force.

2. A vacuum inspection port sealing device according to claim 1, characterized in that: A sealing layer is fixedly coated on the outer surface of the sealing head, the inner surface of the first sealing ring is a concave arc surface, and the sealing layer is squeezed and fitted with the concave arc surface, and a plurality of second sealing rings distributed vertically at intervals for sealing the gap between the sliding hole and the plug-in rod are fixedly connected to the outer side of the plug-in rod.

3. A vacuum inspection port sealing device according to claim 2, characterized in that: The elastic component includes a first spring, a plug-in groove is vertically opened at the bottom end of the sealing head, the top end of the first spring is fixedly connected to the inner top wall of the plug-in groove, the bottom end of the first spring is fixedly connected to the connecting plate, and the connecting plate is fixedly connected to the vacuum detection shell through a connecting rod.

4. A vacuum inspection port sealing device according to claim 3, characterized in that: The vacuum detection probe is fixedly connected to the inner cavity of the movable head, a connecting port is provided at the left end of the movable head, a limiting plate is fixedly connected to the right end of the movable head, a cylindrical cavity and a storage cavity are provided on the side of the plug-in rod, the limiting plate is slidably stored in the storage cavity, and the movable head is stored in the cylindrical cavity, and the limiting plate is fixedly connected to the inner wall of the storage cavity by a second spring.

5. A vacuum inspection port sealing device according to claim 4, characterized in that: A limit ring is coaxially arranged above the vacuum detection shell, the plug-in rod is coaxially movably plugged into the limit ring, and a retaining ring is fixedly connected to the outer side of the plug-in rod, the top end of the retaining ring abuts against the bottom end of the limit ring, and connecting rods are fixedly connected on both sides of the limit ring, and the connecting rods are fixedly connected to the top end of the vacuum detection shell.

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