Capillary chromatographic column sealing box

Abstract

The utility model discloses a capillary chromatographic column sealing box and relates to the technical field of chromatographic column sealing. The device comprises a sealing mechanism and a movable pipe, an adjusting mechanism is arranged on the right side of the sealing mechanism, a fixed block is fixedly connected to the interior of the movable pipe, an inflation pipe is fixedly connected to the right side of the movable pipe, a deflation valve is fixedly connected to the outer side of the inflation pipe, and a sealing gasket is fixedly connected to the right side of the inflation pipe. And the outer surface of the sealing gasket is fixedly connected with a main body. By arranging the movable pipe, the sealing ball is pushed to the left side through air pressure, so that air enters the gas filling pipe through the fixed block and then enters the sealing gasket through the gas filling pipe to support the sealing gasket, the joint of the main body and the replacement groove is sealed, the molecular sieve and silica gel are replaced, and waste of resources can be reduced; and the joint is sealed through the movable pipe, so that air leakage is prevented, the interior of the main body can be kept in a vacuum state, pollution is reduced, cost is reduced, and loss is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of chromatographic column sealing, in particular to a capillary chromatographic column sealing box. Background Art

[0002] Usually, a layer of polymer stationary phase is coated inside the capillary column, such as polysiloxane, polyethylene glycol, etc., and a layer of polyimide coating is often coated on the outside. The polyimide coating has good strength and heat resistance, but under special high temperature conditions, the polyimide coating cannot withstand high temperature aging, so in recent years, aluminum-plated elastic quartz capillary columns have appeared. As long as the quartz capillary column coated with polyimide is stored in an inert environment, it has high tensile strength. However, it is sensitive to moisture. Once the polyimide protective layer on the outside of the column is damaged, it provides a channel for moisture to enter, which leads to the breakage of the quartz column.

[0003] Mishandling of capillary columns can also leave inadvertent scratches on the column surface. These scratches come into contact with moisture and continue to spread, eventually causing the column to break over time. If column breakage occurs during high temperature operation, the column is usually damaged by contact with air.

[0004] In order to prevent interference from air and moisture, laboratories usually insert silicone rubber blocks into capillary columns. However, when the capillary columns are used again after storage, the silicone rubber blocks will adhere to the tube wall, thus contaminating the tube wall. When the capillary columns are used again, the silicone rubber blocks will be cut off, shortening the service life of the columns and increasing costs.

[0005] The existing capillary column sealing box cannot better remove moisture and oxygen in the air, as well as organic matter contained in the tube. After use, the sealing head is discarded and no longer reused, which will cause excessive cost and pollute the environment. Moreover, after the sealing gasket is disassembled, it is easy to be lost. For this reason, we provide a capillary column sealing box. Utility Model Content

[0006] The utility model aims to provide a capillary chromatographic column sealing box, which can reduce waste of resources, pollution, cost and loss by replacing molecular sieves and silica gel, and solves the problem that the existing device is discarded after use and is no longer reused, thus causing excessive cost, pollution to the environment and inability to be reused.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a capillary chromatographic column sealing box, comprising a sealing mechanism and a movable tube, an adjustment mechanism is arranged on the right side of the sealing mechanism, a fixed block is fixedly connected inside the movable tube, an inflation tube is fixedly connected on the right side of the movable tube, an air release valve is fixedly connected on the outside of the inflation tube, a sealing pad is fixedly connected on the right side of the inflation tube, and a main body is fixedly connected on the outer surface of the sealing pad;

[0009] The right side of the sealing gasket contacts with a replacement groove, the outer surface of the replacement groove is slidably connected to the inner wall of the main body, the interior of the replacement groove is fixedly connected with a molecular sieve, the interior of the replacement groove is fixedly connected with silica gel, the right side of the movable tube is fixedly connected with a mounting seat, and the right side of the mounting seat is fixedly connected to the left side of the main body.

[0010] Furthermore, a connecting rod is slidably connected inside the movable tube, and the front side of the connecting rod passes through the movable tube and extends to the outside.

[0011] Furthermore, a pull rod is fixedly connected to the front side of the connecting rod, an outer surface of the connecting rod is in contact with the inside of the movable tube, and a piston is fixedly connected to the back side of the connecting rod.

[0012] Furthermore, the outer surface of the piston is slidably connected to the inner wall of the movable tube, the bottom of the movable tube is fixedly connected to an air intake pipe, a cover plate is rotatably connected inside the air intake pipe, and the inner wall of the movable tube is fixedly connected to a fixed cylinder.

[0013] Furthermore, a sealing ball is slidably connected to the inner side of the fixed cylinder, the front side of the sealing ball contacts the back side of the fixed block, the back side of the sealing ball is fixedly connected to a spring, and the back side of the spring is fixedly connected to the inner wall of the movable tube.

[0014] Furthermore, the adjustment mechanism includes a rotating shaft rotatably connected inside the main body, the front side of the rotating shaft penetrates the main body and extends to the outside, and the outer surface of the rotating shaft is fixedly connected to a knob.

[0015] Furthermore, a gear is fixedly connected to the back of the rotating shaft, a rack is meshedly connected to the top of the gear, a rubber pad is fixedly connected to the left side of the rack, and a movable groove is opened inside the main body.

[0016] Furthermore, the inner wall of the rack is slidably connected to the outer surface of the rack, an intermediate plate is fixedly connected to the inside of the main body, and the bottom of the intermediate plate is in contact with the top of the replacement slot.

[0017] The utility model has the following beneficial effects:

[0018] The utility model provides a movable tube, and uses air pressure to push the sealing ball to the left side, so that the gas enters the interior of the inflation tube through the fixed block, and then enters the sealing pad through the inflation tube to prop it up, thereby sealing the connection between the main body and the replacement groove, and reducing the waste of resources by replacing the molecular sieve and the silica gel. In addition, the connection is sealed by the movable tube to prevent air leakage, so that the interior of the main body can be kept in a vacuum state, thereby reducing pollution, reducing costs, and reducing losses.

[0019] The utility model sets a gear and rotates a knob. The rotation of the knob drives the rotating shaft to rotate, and then the rotation of the rotating shaft drives the gear to rotate. The rotation of the gear drives the rack to move to the right side, and the rack drives the rubber pad to move to the right side to open the through hole. Then, a rubber ring corresponding to the aperture of the capillary chromatographic column is inserted into the main body, so as to prevent the rubber pad from being lost after being disassembled. In addition, the rubber pad reduces the cost and can be reused.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the right side cross-sectional structure of the main body of the utility model;

[0024] Figure 3 This is a schematic diagram of the front cross-sectional structure of the main body of the utility model;

[0025] Figure 4 This is a schematic diagram of the cross-sectional structure of the top of the movable tube of the utility model;

[0026] Figure 5 It is a schematic diagram of the right side cross-sectional structure of the movable tube of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Sealing mechanism; 101. Movable tube; 102. Connecting rod; 103. Pull rod; 104. Piston; 105. Fixed block; 106. Air release valve; 107. Inflating tube; 108. Sealing pad; 109. Fixed cylinder; 110. Sealing ball; 111. Spring; 112. Inlet pipe; 113. Cover plate; 114. Mounting seat; 2. Adjusting mechanism; 201. Main body; 202. Middle plate; 203. Replacement slot; 204. Molecular sieve; 205. Silica gel; 207. Knob; 208. Rotating shaft; 209. Rubber pad; 210. Movable slot; 211. Rack; 212. Gear. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-5As shown, the utility model is a capillary chromatographic column sealing box, comprising a sealing mechanism 1 and a movable tube 101, an adjustment mechanism 2 is arranged on the right side of the sealing mechanism 1, a fixed block 105 is fixedly connected inside the movable tube 101, an inflation tube 107 is fixedly connected on the right side of the movable tube 101, an air release valve 106 is fixedly connected on the outside of the inflation tube 107, a sealing pad 108 is fixedly connected on the right side of the inflation tube 107, a main body 201 is fixedly connected to the outer surface of the sealing pad 108, and a replacement groove 203 is contacted on the right side of the sealing pad 108, the outer surface of the replacement groove 203 is slidably connected to the inner wall of the main body 201, a molecular sieve 204 is fixedly connected inside the replacement groove 203, a silica gel 205 is fixedly connected inside the replacement groove 203, a mounting seat 114 is fixedly connected on the right side of the movable tube 101, and a mounting plate 114 is fixedly connected on the right side of the movable tube 101. The right side of the mounting seat 114 is fixedly connected to the left side of the main body 201, and the sealing ball 110 is pushed to the left by air pressure, so that the gas enters the interior of the inflation tube 107 through the fixed block 105, and then enters the sealing gasket 108 through the inflation tube 107 to prop it up, and the connection between the main body 201 and the replacement groove 203 is sealed. By replacing the molecular sieve 204 and the silica gel 205, the waste of resources can be reduced, and the connection is sealed by the movable tube 101 to prevent leakage, so that the inside of the main body 201 can maintain a vacuum state. The movable tube 101 is slidably connected with a connecting rod 102, and the sealing gasket 108 is inflated through the movable tube 101. The front of the connecting rod 102 passes through the movable tube 101 and extends to the outside. 02 is fixedly connected with a pull rod 103 on the front side, the outer surface of the connecting rod 102 contacts the inside of the movable tube 101, the back side of the connecting rod 102 is fixedly connected with a piston 104, the outer surface of the piston 104 is slidably connected with the inner wall of the movable tube 101, the bottom of the movable tube 101 is fixedly connected with an air inlet pipe 112, the inside of the air inlet pipe 112 is rotatably connected with a cover plate 113, the inner wall of the movable tube 101 is fixedly connected with a fixed cylinder 109, the sealing ball 110 is limited by the fixed cylinder 109 to prevent the sealing ball 110 from deflecting during extrusion, the inner side of the fixed cylinder 109 is slidably connected with the sealing ball 110, the front side of the sealing ball 110 contacts the back side of the fixed block 105, the back side of the sealing ball 110 is fixedly connected with a spring 111, the back side of the spring 111 is rotatably connected with the movable tube 101 The inner wall is fixedly connected, and the adjustment mechanism 2 includes a rotating shaft 208 rotatably connected to the inside of the main body 201. The front side of the rotating shaft 208 passes through the main body 201 and extends to the outside. The outer surface of the rotating shaft 208 is fixedly connected with a knob 207, and the back side of the rotating shaft 208 is fixedly connected with a gear 212. The rubber pad 209 is removed by the cooperation of the gear 212 and the rack 211, so that the capillary chromatographic column is inserted into the main body 201. The top of the gear 212 is meshed with the rack 211, and the left side of the rack 211 is fixedly connected with the rubber pad 209. A movable groove 210 is opened inside the main body 201, and the inner wall of the rack 211 is slidably connected with the outer surface of the rack 211. The middle plate 202 is fixedly connected to the inside of the main body 201, and the bottom of the middle plate 202 contacts the top of the replacement groove 203.

[0031] A specific application of this embodiment is: when the staff needs to insert the capillary chromatographic column into the main body 201, they first turn the knob 207, the knob 207 rotates to drive the shaft 208 to rotate, and then the shaft 208 rotates to drive the gear 212 to rotate, the gear 212 rotates to drive the rack 211 to move to the right, the rack 211 drives the rubber pad 209 to move to the right to open the through hole, and then insert the rubber ring corresponding to the aperture of the capillary chromatographic column into the main body 201 to prevent If the rubber pad 209 cannot be found after being disassembled, and the silica gel 205 and the molecular sieve 204 are broken and aged, the gasket 108 is first opened to release the gas inside the gasket 108. Because the gasket 107 is opened and the replacement slot 203 is then pulled out, the gasket 108 is squeezed to discharge the air inside it, so that the replacement slot 203 can be taken out, and then the replacement slot 203 is pulled out for replacement. After the replacement is completed, the replacement slot 203 is restored, and then the pull rod 103 is pulled out. Pull it to the right, and the connecting rod 102 is driven to move to the right through the pull rod 103, and then the piston 104 is driven to move to the right through the connecting rod 102, so that the air pressure inside the movable tube 101 becomes smaller, so that the air lifts the cover plate 113 and enters the movable tube 101 through the air inlet pipe 112, and then the piston 104 is pushed to the left, and the air pushes the cover plate 113 downward to close the air inlet pipe 112. After closing, the sealing ball 110 is pushed to the left by the air pressure and the spring 111 is squeezed, so that the gas The gas flows into the movable tube 101 through the fixed tube 109, and then enters the inflation tube 107 through the fixed block 105, and then enters the sealing pad 108 through the inflation tube 107 to prop it up, thereby sealing the connection between the main body 201 and the replacement groove 203. By replacing the molecular sieve 204 and the silica gel 205, the waste of resources can be reduced, and the connection is sealed through the movable tube 101 to prevent air leakage, so that the inside of the main body 201 can maintain a vacuum state.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A capillary chromatographic column sealing box, comprising a sealing mechanism (1) and a movable tube (101), wherein an adjustment mechanism (2) is arranged on the right side of the sealing mechanism (1), and a fixed block (105) is fixedly connected inside the movable tube (101), characterized in that: The right side of the movable tube (101) is fixedly connected to an inflation tube (107), the outer side of the inflation tube (107) is fixedly connected to an air release valve (106), the right side of the inflation tube (107) is fixedly connected to a sealing pad (108), and the outer surface of the sealing pad (108) is fixedly connected to a main body (201); The right side of the sealing gasket (108) contacts a replacement groove (203), the outer surface of the replacement groove (203) is slidably connected to the inner wall of the main body (201), the interior of the replacement groove (203) is fixedly connected to a molecular sieve (204), the interior of the replacement groove (203) is fixedly connected to a silica gel (205), the right side of the movable tube (101) is fixedly connected to a mounting seat (114), and the right side of the mounting seat (114) is fixedly connected to the left side of the main body (201).

2. The capillary chromatographic column sealing box according to claim 1, characterized in that: A connecting rod (102) is slidably connected inside the movable tube (101), and the connecting rod (102) penetrates the movable tube (101) at the front and extends to the outside.

3. The capillary chromatographic column sealing box according to claim 2, characterized in that: The front side of the connecting rod (102) is fixedly connected to a pull rod (103), the outer surface of the connecting rod (102) is in contact with the inside of the movable tube (101), and the back side of the connecting rod (102) is fixedly connected to a piston (104).

4. The capillary chromatographic column sealing box according to claim 3, characterized in that: The outer surface of the piston (104) is slidably connected to the inner wall of the movable tube (101); the bottom of the movable tube (101) is fixedly connected to an air intake pipe (112); a cover plate (113) is rotatably connected inside the air intake pipe (112); and the inner wall of the movable tube (101) is fixedly connected to a fixed cylinder (109).

5. The capillary chromatographic column sealing box according to claim 4, characterized in that: A sealing ball (110) is slidably connected to the inner side of the fixed cylinder (109); the front side of the sealing ball (110) contacts the back side of the fixed block (105); the back side of the sealing ball (110) is fixedly connected to a spring (111); the back side of the spring (111) is fixedly connected to the inner wall of the movable tube (101).

6. The capillary chromatographic column sealing box according to claim 1, characterized in that: The adjustment mechanism (2) comprises a rotating shaft (208) rotatably connected inside the main body (201); the front side of the rotating shaft (208) passes through the main body (201) and extends to the outside; the outer surface of the rotating shaft (208) is fixedly connected to a knob (207).

7. The capillary chromatographic column sealing box according to claim 6, characterized in that: A gear (212) is fixedly connected to the back of the rotating shaft (208), a rack (211) is meshedly connected to the top of the gear (212), a rubber pad (209) is fixedly connected to the left side of the rack (211), and a movable groove (210) is provided inside the main body (201).

8. The capillary chromatographic column sealing box according to claim 7, characterized in that: The inner wall of the rack (211) is slidably connected to the outer surface of the rack (211), and an intermediate plate (202) is fixedly connected inside the main body (201), and the bottom of the intermediate plate (202) is in contact with the top of the replacement slot (203).

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