Jacket vacuumizing system

Abstract

The utility model belongs to the technical field of vacuumizing devices, and particularly relates to a jacket vacuumizing system which comprises a vacuum container and an air exhaust connector, the vacuum container is provided with an anti-explosion connector, the air exhaust connector is installed on the vacuum container and used for vacuumizing the vacuum container, the air exhaust connector comprises a cylinder installed on the vacuum container, and the cylinder is arranged on the vacuum container. A detachable end is arranged on the barrel in a sleeving mode, a first airflow channel is formed in the barrel in the axial direction, a mounting cavity is formed in the end, close to the outer threads, of the first airflow channel, the mounting cavity is slidably connected with a valve element, and the diameter size of the mounting cavity is larger than that of the first airflow channel. The first airflow channel and the mounting cavity with the diameter larger than that of the first airflow channel are formed, meanwhile, the valve element slides in the mounting cavity, one-way airflow circulation of the air exhaust connector is achieved, self-sealing is achieved after air exhaust equipment stops air exhaust, then the air exhaust pipe can be disconnected by detaching the detachable end, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum pumping devices, in particular to a jacket vacuum pumping system. Background Art

[0002] In the field of pharmaceuticals and chemicals, the application of vacuum is of great significance in promoting the development of the field. For example, vacuum is used in jackets for heat exchange, tanks and barrels for storage, and kettles for reactions. The application of vacuum has many benefits and significances, which not only affects product quality and safety, but also involves production efficiency, environmental protection and many other aspects. With the continuous advancement and innovation of technology, vacuum technology will play a more important role in the field of pharmaceuticals and chemicals.

[0003] In applications where refrigerant is passed through the jacket for condensation, the jacket needs to be evacuated when it is in use in order to avoid an increase in air pressure in the jacket due to heat transfer, which could create a safety hazard. When a traditional vacuuming device needs to disconnect the exhaust pipe after evacuating the jacket, it is usually necessary to trigger a spring core to disconnect the exhaust pipe before the exhaust pipe can be disassembled. This requires quick and accurate operation to reduce the risk of air entering the jacket, which results in inconvenience in operation. Utility Model Content

[0004] The purpose of the utility model is to provide a jacket vacuum pumping system to solve the above-mentioned technical problems, which can achieve the effect of self-sealing when the vacuuming is stopped, thereby improving the convenience of operation.

[0005] In view of this, the utility model provides a jacket vacuum system, comprising:

[0006] The jacket is equipped with an explosion-proof joint and is used for pressure relief of the jacket;

[0007] A vacuum joint, installed on the jacket and used for vacuuming the jacket;

[0008] Among them, the exhaust joint includes:

[0009] The cylinder is installed on the jacket, with one end extending into the jacket and the other end located outside the jacket and provided with external threads;

[0010] The detachable end is sleeved on one end of the cylinder body located outside the jacket and is detachably connected to the external thread;

[0011] The cylinder body is axially provided with a first airflow channel, and an installation cavity is provided at one end of the first airflow channel close to the external thread, and a valve core is slidably connected to the installation cavity, and the diameter of the installation cavity is larger than the diameter of the first airflow channel.

[0012] In the above technical solution, further, the valve core includes:

[0013] The main body is located in the installation cavity and forms an annular airflow channel with the inner wall of the installation cavity, and a first annular groove is formed on a side close to the bottom wall of the installation cavity;

[0014] The first sealing ring is installed in the first annular groove.

[0015] In the above technical solution, further, the valve core also includes:

[0016] The strip-shaped protrusion is axially mounted on the surface of the main body and is slidably connected with the inner wall of the mounting cavity;

[0017] There are a plurality of strip-shaped protrusions arranged at equal intervals around the circumference, and a second air flow channel is formed between two adjacent strip-shaped protrusions.

[0018] In the above technical solution, further:

[0019] A countersunk hole is formed at one end of the main body away from the first air flow channel, and a plurality of air flow holes communicating with the second air flow channel are respectively formed on the inner wall of the countersunk hole.

[0020] In the above technical solution, further, it also includes:

[0021] The filter screen is sleeved on one end of the cylinder body located in the jacket.

[0022] In the above technical solution, further, the detachable end includes:

[0023] A first nut is connected to one end of the cylinder located outside the jacket and is provided with a through hole in the axial direction;

[0024] The air extraction nozzle is coaxially connected to the first nut, one end of which is connected to the inner wall of the through hole, and the other end of which is connected to the air extraction pipe.

[0025] In the above technical solution, further, the detachable end includes:

[0026] The second nut is connected to one end of the cylinder body located outside the jacket.

[0027] In the above technical solution, further, the explosion-proof joint includes:

[0028] The valve body is mounted on the jacket and is provided with a third air flow channel communicating with the jacket;

[0029] A sealing cover is installed on the valve body and is used to seal the third air flow channel, and a second annular groove is formed on a side close to the valve body;

[0030] A second sealing ring is installed in the second annular groove;

[0031] The explosion-proof cover is sleeved on the surfaces of the valve body and the sealing cover, and is provided with a connection structure with the surface of the valve body.

[0032] In the above technical solution, further:

[0033] The connection structure includes a nut mounted on the inner wall of the explosion-proof cover and a bolt connected to the nut; a third annular groove corresponding to the bolt is opened on the surface of the valve body, and the bolt extends into the third annular groove and is clamped therewith.

[0034] The beneficial effects of the utility model are:

[0035] 1. By adopting a cylindrical structure for the vacuum joint, and opening a first airflow channel and an installation cavity with a diameter larger than the first airflow channel in the cylindrical body, and slidingly installing the valve core in the installation cavity, a one-way airflow circulation of the vacuum joint is achieved, so that self-sealing is achieved after the vacuum device stops pumping, and then the connection of the vacuum pipe can be disconnected by removing the detachable end, which is convenient to operate.

[0036] 2. By opening a first annular groove on one side of the main body of the valve core close to the cylinder and installing a first sealing ring in the first annular groove, the valve core can be moved axially to switch between conduction and closure. When self-sealing, the first sealing ring is squeezed due to the pressure difference between the inside and outside of the valve core, thereby effectively improving the sealing effect. After the detachable end is disassembled, a nut can be installed for double sealing.

[0037] 3. The arrangement of the strip-shaped protrusions facilitates the improvement of the stability of the valve core when it slides, and the second air flow channel formed and the opening of the countersunk holes and air flow holes can increase the amount of air flow passing through the valve core and improve the air extraction efficiency;

[0038] 4. By setting an explosion-proof joint in the jacket and sealing it with a cover through the pressure difference between the inside and the outside, when the pressure inside the jacket is greater than the outside, the cover will be pushed open, effectively ensuring the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the utility model;

[0040] Figure 2 It is a top view of the utility model;

[0041] Figure 3 This utility model Figure 2 Sectional view at AA in the middle;

[0042] Figure 4 This utility model Figure 3 The enlarged view of point B in the middle;

[0043] Figure 5 This utility model Figure 3 Enlarged view of point C in the middle;

[0044] Figure 6 It is a structural schematic diagram of the air extraction joint in Example 6 of the utility model;

[0045] Figure 7 It is a structural schematic diagram of the air extraction joint in Example 7 of the utility model;

[0046] The markings in the figure are as follows: 1. Jacket; 2. Explosion-proof joint; 20. Valve body; 21. Third air flow channel; 22. Cover; 23. Second annular groove; 24. Second sealing ring; 25. Explosion-proof cover; 26. Connection structure; 260. Nut; 261. Bolt; 262. Third annular groove; 3. Vacuum joint; 4. Cylinder; 5. Removable end; 50. First nut; 51. Through hole; 52. Vacuum nozzle; 54. Second nut; 6. First air flow channel; 7. Mounting cavity; 8. Valve core; 80. Main body; 81. Annular air flow channel; 82. First annular groove; 83. First sealing ring; 84. Strip protrusion; 85. Second air flow channel; 86. Countersunk hole; 87. Air flow hole; 9. Filter. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0048] Embodiment 1:

[0049] This embodiment provides a jacket 1 vacuum pumping system, comprising:

[0050] The jacket 1 is provided with an explosion-proof joint 2 and is used for pressure relief of the jacket 1;

[0051] A vacuum joint 3 is installed on the jacket 1 and is used for vacuuming the jacket 1;

[0052] Wherein, the air extraction joint 3 comprises:

[0053] The barrel 4 is mounted on the jacket 1, with one end extending into the jacket 1 and the other end being located outside the jacket 1 and provided with an external thread;

[0054] The detachable end 5 is sleeved on one end of the cylinder 4 located outside the jacket 1 and is detachably connected to the external thread;

[0055] The cylinder body 4 is axially provided with a first air flow channel 6, and a mounting cavity 7 is provided at one end of the first air flow channel 6 close to the external thread, and a valve core 8 is slidably connected to the mounting cavity 7, and the diameter of the mounting cavity 7 is larger than the diameter of the first air flow channel 6, so the mounting cavity 7 forms a bottom wall on one side close to the first air flow channel 6, and the abutment between the valve core 8 and the bottom wall is a sealing surface, thereby realizing the unidirectional conduction of the valve core 8;

[0056] At the same time, the cylinder 4 and the jacket 1 are welded.

[0057] It can be seen from the present embodiment that the air extraction joint 3 adopts the structure of the cylinder 4, and the first air flow channel 6 and the installation cavity 7 with a diameter larger than the first air flow channel 6 are provided in the cylinder 4, and the valve core 8 is unidirectionally circulated, so that self-sealing is achieved after the air extraction device stops extracting air, and then the connection of the air extraction pipe can be disconnected by removing the detachable end 5, which is convenient for operation;

[0058] Furthermore, the detachable end 5 can be provided with two devices, one for pumping air, and the other for sealing the cylinder 4 after the pumping device is removed, thereby providing an additional layer of sealing and safety protection;

[0059] The explosion-proof joint 2 on the jacket 1 can improve safety during use.

[0060] Embodiment 2:

[0061] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, the valve core 8 includes:

[0062] The main body 80 is located in the installation cavity 7 and forms an annular airflow channel 81 with the inner wall of the installation cavity 7, and a first annular groove 82 is formed on a side close to the bottom wall of the installation cavity 7;

[0063] A first sealing ring 83, installed in the first annular groove 82;

[0064] The annular airflow channel 81 can be as large as possible while ensuring the safety of the first sealing ring 83, thereby effectively increasing the airflow channel and improving the vacuuming efficiency.

[0065] It can be seen from the present embodiment that by opening a first annular groove 82 on one side of the main body 80 of the valve core 8 close to the cylinder 4 and installing a first sealing ring 83 in the first annular groove 82, the valve core 8 can be moved axially to switch between conduction and closure, and when self-closing, the first sealing ring 83 is squeezed due to the pressure difference between the inside and outside of the valve core 8, thereby effectively improving the sealing effect.

[0066] Embodiment 3:

[0067] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the valve core 8 also includes:

[0068] The strip-shaped protrusion 84 is axially mounted on the surface of the main body 80 and is slidably connected to the inner wall of the mounting cavity 7;

[0069] There are multiple strip-shaped protrusions 84, which are arranged at equal intervals around the circumference, and a second air flow channel 85 is formed between two adjacent strip-shaped protrusions 84;

[0070] At the same time, the strip-shaped protrusion 84 and the main body 80 adopt an integrated structure.

[0071] It can be seen from this embodiment that the arrangement of the strip protrusion 84 improves the stability of the valve core 8 sliding in the safety cavity, thereby ensuring the coaxiality between the main body 80 and the cylinder 4, and ensuring the sealing effect of the first sealing ring 83;

[0072] A second air flow channel 85 is formed between two adjacent strip-shaped protrusions 84 to ensure the circulation of air flow and increase the air flow channel, thereby improving the vacuuming efficiency.

[0073] Embodiment 4:

[0074] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0075] A counterbore 86 is formed at one end of the main body 80 away from the first air flow channel 6 , and a plurality of air flow holes 87 communicating with the second air flow channel 85 are formed on the inner wall of the counterbore 86 .

[0076] It can be seen from this embodiment that by opening the counterbore 86 and the air flow hole 87, the amount of air flow passing through the valve core 8 can be further increased, the air flow channel can be enlarged, and the vacuuming efficiency can be improved.

[0077] Embodiment 5:

[0078] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, including:

[0079] The filter screen 9 is sleeved on one end of the cylinder 4 located in the jacket 1;

[0080] The filter screen 9 may be a filter tube made of metal or a filter rod for filtering.

[0081] It can be seen from this embodiment that by arranging a filter screen 9 at one end of the cylinder 4 located in the jacket 1, the air extraction joint 3 has a filtering effect, preventing impurities in the jacket 1 from entering the air extraction equipment and affecting the service life of the air extraction equipment.

[0082] Embodiment 6:

[0083] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the detachable end 5 includes:

[0084] The first nut 50 is connected to one end of the cylinder 4 located outside the jacket 1 and has an axial through hole 51;

[0085] The air extraction nozzle 52 is coaxially connected to the first nut 50, and one end of the nozzle is connected to the inner wall of the through hole 51, and the other end of the nozzle is connected to the air extraction pipe;

[0086] The first nut 50 and the air extraction nozzle 52 may be connected by thread or by welding.

[0087] It can be seen from the present embodiment that the air suction nozzle 52 facilitates communication with the air suction pipe, and the first nut 50 facilitates the disassembly and installation between the air suction pipe and the cylinder body 4, thereby improving convenience.

[0088] Embodiment 7:

[0089] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the detachable end 5 includes:

[0090] The second nut 54 is connected to one end of the cylinder 4 located outside the jacket 1 .

[0091] It can be seen from this embodiment that by adopting the nut structure, after the detachable end 5 is removed, it can be installed through the second nut 54, providing double protection for the cylinder 4 and achieving a double sealing effect.

[0092] Embodiment 8:

[0093] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features. The explosion-proof joint 2 includes:

[0094] The valve body 20 is mounted on the jacket 1 and is provided with a third air flow channel 21 communicating with the jacket 1;

[0095] The sealing cover 22 is mounted on the valve body 20 and is used to seal the third air flow channel 21. A second annular groove 23 is formed on a side close to the valve body 20.

[0096] A second sealing ring 24 is installed in the second annular groove 23;

[0097] The explosion-proof cover 25 is sleeved on the surface of the valve body 20 and the cover 22, and is provided with a connection structure 26 on the surface of the valve body 20;

[0098] Among them, a fourth air flow channel is formed between the explosion-proof cover 25 and the valve body 20, which is convenient for discharging the high pressure in the jacket 1;

[0099] Meanwhile, the valve body 20 and the jacket 1 may be welded.

[0100] It can be seen from this embodiment that by arranging an explosion-proof joint 2 in the jacket 1 and sealing with a cover 22 by means of the internal and external pressure difference, when the pressure inside the jacket 1 is greater than that outside, the cover 22 will be pushed open, thereby effectively ensuring the safety of use;

[0101] The explosion-proof cover 25 can prevent the cover 22 from being lifted up and flying out due to excessive pressure, thereby further improving the safety of use.

[0102] It is configured as a sealing cover 22 and a second annular groove 23 with a second sealing ring 24 is provided on one side of the sealing cover 22 close to the valve body 20. When the jacket 1 is in a vacuum due to the vacuum joint 3, a pressure difference can be generated inside and outside the sealing cover 22, thereby improving the sealing effect on the valve body 20.

[0103] Embodiment 9:

[0104] This embodiment provides a jacket 1 vacuum pumping system, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0105] The connection structure 26 includes a nut 260 mounted on the inner wall of the explosion-proof cover 25 and a bolt 261 connected to the nut 260; a third annular groove 262 corresponding to the bolt 261 is formed on the surface of the valve body 20, and the bolt 261 extends into the third annular groove 262 and is clamped therewith;

[0106] The nut 260 and the explosion-proof cover 25 are welded.

[0107] It can be seen from this embodiment that by adopting the setting of the nut 260 and the bolt 261, the clamping connection between the explosion-proof cover 25 and the valve body 20 is facilitated, and it is also convenient to remove the explosion-proof cover 25 and detect the sealing effect between the cover 22 and the valve body 20, thereby improving the convenience of maintenance.

[0108] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A jacket vacuum system, characterized in that: include: The jacket (1) is equipped with an explosion-proof joint (2) and is used for relieving the pressure of the jacket (1); A vacuum joint (3) is mounted on the jacket (1) and is used to evacuate the jacket (1); Wherein, the air extraction joint (3) comprises: The barrel (4) is mounted on the jacket (1), with one end extending into the jacket (1) and the other end being located outside the jacket (1) and having an external thread; A detachable end (5) is sleeved on one end of the cylinder (4) located outside the jacket (1) and is detachably connected to the external thread; The cylinder (4) is provided with a first air flow channel (6) in the axial direction, and a mounting cavity (7) is provided at one end of the first air flow channel (6) close to the external thread, and the mounting cavity (7) is slidably connected to a valve core (8), and the diameter of the mounting cavity (7) is larger than the diameter of the first air flow channel (6).

2. The jacket vacuum system according to claim 1, characterized in that: The valve core (8) comprises: The main body (80) is located in the installation cavity (7) and forms an annular airflow channel (81) with the inner wall of the installation cavity (7), and a first annular groove (82) is formed on a surface close to the bottom wall of the installation cavity (7); A first sealing ring (83) is installed in the first annular groove (82).

3. The jacket vacuum system according to claim 2, characterized in that: The valve core (8) further comprises: A strip-shaped protrusion (84) is axially mounted on the surface of the main body (80) and is slidably connected to the inner wall of the mounting cavity (7); There are a plurality of strip-shaped protrusions (84) arranged at equal intervals around the circumference, and a second air flow channel (85) is formed between two adjacent strip-shaped protrusions (84).

4. The jacket vacuum system according to claim 3, characterized in that: A countersunk hole (86) is formed at one end of the main body (80) away from the first air flow channel (6), and a plurality of air flow holes (87) connected to the second air flow channel (85) are formed on the inner wall of the countersunk hole (86).

5. The jacket vacuum system according to claim 1, characterized in that: Also includes: The filter screen (9) is sleeved on one end of the cylinder (4) located inside the jacket (1).

6. The jacket vacuum system according to claim 1, characterized in that: The detachable end (5) comprises: A first nut (50) is connected to one end of the cylinder (4) located outside the jacket (1) and is provided with an axial through hole (51); The air extraction nozzle (52) is coaxially connected to the first nut (50), one end of which is connected to the inner wall of the through hole (51) and the other end of which is connected to the air extraction pipe.

7. The jacket vacuum system according to claim 1, characterized in that: The detachable end (5) comprises: The second nut (54) is connected to one end of the cylinder (4) located outside the jacket (1).

8. The jacket vacuum system according to claim 1, characterized in that: The explosion-proof joint (2) comprises: A valve body (20) is mounted on the jacket (1) and is provided with a third air flow channel (21) communicating with the jacket (1); A sealing cover (22) is mounted on the valve body (20) and is used to seal the third air flow channel (21), and is provided with a second annular groove (23) on a surface close to the valve body (20); A second sealing ring (24) is installed in the second annular groove (23); The explosion-proof cover (25) is sleeved on the surfaces of the valve body (20) and the sealing cover (22), and is provided with a connection structure (26) on the surface of the valve body (20).

9. The jacket vacuum system according to claim 8, characterized in that: The connection structure (26) comprises a nut (260) mounted on the inner wall of the explosion-proof cover (25) and a bolt (261) connected to the nut (260); a third annular groove (262) corresponding to the bolt (261) is formed on the surface of the valve body (20), and the bolt (261) extends into the third annular groove (262) and is clamped therewith.

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