A laboratory extraction device with good sealing performance

Abstract

The utility model relates to the field of experimental extraction devices, in particular to an extraction device for laboratory use with good sealing performance, comprising: an extraction tank body, a cover body is arranged on the top of the extraction tank body, a support ring is fixedly installed on the top of the inner cavity of the extraction tank body; a sealing mechanism, the sealing mechanism is installed between the extraction tank body and the cover body and can increase the sealing performance between the two; when the extraction tank body and the cover body are installed, a staff member inserts the sealing mechanism into the interior of the extraction tank body, when the sealing mechanism is inserted to a certain position, a pressure plate contacts with the support ring, and as the sealing mechanism continues to descend, the pressure plate and the piston rod are driven to rise, and the pressure plate and the piston rod synchronously drive the piston plate to move upward when rising, and the gas inside the piston cylinder is injected into the interior of the air bag through the connection between the air pipe and the air bag, so that the air bag expands, so as to increase the sealing performance between the air bag and the extraction tank body.

Description

Technical Field

[0001] The utility model relates to the field of experimental extraction devices, in particular to a laboratory extraction device with good sealing performance. Background Art

[0002] Chemistry is a type of natural science that studies the composition, properties, structure and laws of change of substances at the molecular and atomic levels, and creates new substances (in essence, molecules that did not exist in nature). As an important bridge between the microscopic and macroscopic material worlds, chemistry is one of the main methods and means for humans to understand and transform the material world. Extraction devices are devices used to extract target compounds or substances from samples. They usually include a mixture of solvents and samples, and separate the target substances by physical or chemical means.

[0003] At present, in the prior art, the extraction tank used in the laboratory and the cover body are sealed only by a sealing gasket. However, after long-term use, the sealing performance will decrease, thereby affecting the effect of the extraction tank.

[0004] Therefore, a laboratory extraction device with better sealing performance is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a laboratory extraction device with better sealing performance in order to solve the above-mentioned problems, thereby improving the problem that the sealing between the extraction tank and the cover body used in the laboratory only relies on a sealing gasket. However, after long-term use, the sealing performance will decrease, thereby affecting the effect of the extraction tank.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme. A laboratory extraction device with good sealing performance comprises: an extraction tank body, a cover body is arranged on the top of the extraction tank body, and a support ring is fixedly installed on the top of the inner cavity of the extraction tank body; a sealing mechanism, which is installed between the extraction tank body and the cover body and can increase the sealing performance between the two; wherein, the sealing mechanism comprises an annular fixing plate fixedly installed on the bottom of the cover body, a sealing gasket is fixedly installed on the top of the outer surface of the annular fixing plate, an airbag is installed on the bottom of the outer surface of the annular fixing plate, a driving component is installed through the inside of the annular fixing plate, and the driving component is used to increase the sealing performance of the airbag, and the tops of both sides of the extraction tank body are installed with fixing components, and the fixing components are used to install the cover body on the top of the extraction tank body.

[0007] Preferably, the driving assembly includes a plurality of piston cylinders installed through the bottom of the annular fixed plate, a piston plate is slidably installed at the bottom of the inner cavity of the piston cylinder, a piston rod is fixedly installed at the bottom of the piston plate, the bottom end of the piston rod passes through the piston cylinder and extends to the outside of the piston cylinder, a pressure plate is fixedly installed at the bottom end of the piston rod, a first return spring is fixedly installed on the top of the piston plate, and the top end of the first return spring is fixedly connected to the top of the inner cavity of the piston cylinder.

[0008] Preferably, an air pipe is installed on the top end of the piston cylinder, and the top end of the piston cylinder is connected to the top of the airbag through the air pipe.

[0009] Preferably, the fixing assembly includes two mounting shells fixedly mounted on the top of both sides of the extraction tank body, and insertion rods are fixedly mounted on both sides of the bottom of the cover body, the bottom ends of the insertion rods penetrate the mounting shell and extend to the interior of the mounting shell, a limiting hole is provided on the surface of the insertion rod, and a wedge block is slidably mounted inside the limiting hole, a sliding rod is fixedly mounted on one side of the wedge block, one end of the sliding rod penetrates the mounting shell and extends to the outside of the mounting shell, a handle is fixedly mounted on one end of the sliding rod located outside the mounting shell, and a second return spring is fixedly mounted between the wedge block and the sliding rod.

[0010] Preferably, a slide plate is slidably mounted on the bottom of the inner cavity of the mounting shell, third return springs are fixedly mounted on both sides of the bottom of the slide plate, and the bottom end of the third return spring is fixedly connected to the bottom of the inner cavity of the mounting shell.

[0011] Preferably, the sealing gasket is in an O-shape and is made of a rubber component.

[0012] Preferably, the shape of the airbag is "O-shaped" and the material of the airbag is a rubber component.

[0013] The beneficial effects of the utility model are:

[0014] 1. When installing the extraction tank body and the cover body, the staff inserts the sealing mechanism into the extraction tank body. When the sealing mechanism is inserted to a certain position, the pressure plate contacts the support ring, and as the sealing mechanism continues to descend, the pressure plate and the piston rod are driven to rise. When the pressure plate and the piston rod rise, they simultaneously drive the piston plate to move upward, and the gas inside the piston cylinder is injected into the inside of the air bag through the connection between the air pipe and the air bag, so that the air bag expands, thereby increasing the sealing performance between the air bag and the extraction tank body, thereby increasing the sealing performance of the connection between the extraction tank body and the cover body, and avoiding the situation that affects the extraction;

[0015] 2. When the extraction tank body is connected to the cover body, the cover body drives the insertion rod to descend synchronously, so that the insertion rod is inserted into the interior of the installation shell. When the installation shell descends, the wedge block is pushed by the wedge design of the wedge block and the insertion rod. When the insertion rod is completely descended, the wedge block automatically inserts into the interior of the limiting hole by the elasticity of the second return spring to lock the insertion rod, which facilitates increasing the connection stability between the extraction tank body and the cover body, and avoids the situation where the stability between the cover body and the extraction tank body is low, which affects the sealing between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the airbag structure of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of area A in the middle;

[0019] Figure 4 It is a schematic diagram of the structure of the fixing component of the utility model.

[0020] In the figure: 1. extraction tank body; 2. cover body; 3. sealing mechanism; 31. annular fixing plate; 32. sealing gasket; 33. airbag; 34. driving assembly; 341. piston cylinder; 342. piston plate; 343. piston rod; 344. pressure plate; 345. first return spring; 346. air pipe; 35. fixing assembly; 351. mounting shell; 352. insertion rod; 353. wedge block; 354. sliding rod; 355. handle; 356. second return spring; 357. sliding plate; 358. third return spring. DETAILED DESCRIPTION

[0021] 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.

[0022] When implementing: Figure 1-4 As shown, a laboratory extraction device with good sealing performance comprises:

[0023] An extraction tank body 1, a cover body 2 is arranged on the top of the extraction tank body 1, and a support ring is fixedly installed on the top of the inner cavity of the extraction tank body 1;

[0024] The sealing mechanism 3 is installed between the extraction tank body 1 and the cover body 2 and can increase the sealing performance between the two;

[0025] The sealing mechanism 3 includes an annular fixing plate 31 fixedly mounted on the bottom of the cover body 2, a sealing gasket 32 ​​is fixedly mounted on the top of the outer surface of the annular fixing plate 31, an air bag 33 is mounted on the bottom of the outer surface of the annular fixing plate 31, a driving component 34 is installed through the inside of the annular fixing plate 31, and the driving component 34 is used to increase the sealing performance of the air bag 33, and fixing components 35 are installed on the top of both sides of the extraction tank body 1, and the fixing components 35 are used to install the cover body 2 on the top of the extraction tank body 1;

[0026] In this embodiment, the sealing gasket 32 ​​is in an "O-shaped" shape, and the material of the sealing gasket 32 ​​is a rubber component; the airbag 33 is in an "O-shaped" shape, and the material of the airbag 33 is a rubber component; the elasticity of the rubber can increase the sealing performance between the extraction tank body 1 and the sealing mechanism 3;

[0027] The driving assembly 34 includes a plurality of piston cylinders 341 which are installed through the bottom of the annular fixing plate 31. A piston plate 342 is slidably installed at the bottom of the inner cavity of the piston cylinder 341. A piston rod 343 is fixedly installed at the bottom of the piston plate 342. The bottom end of the piston rod 343 penetrates the piston cylinder 341 and extends to the outside of the piston cylinder 341. A pressure plate 344 is fixedly installed at the bottom end of the piston rod 343. A first return spring 345 is fixedly installed at the top of the piston plate 342. The top end of the first return spring 345 is fixedly connected to the top of the inner cavity of the piston cylinder 341. An air pipe 346 is installed at the top of the piston cylinder 341. The top end of the piston cylinder 341 is connected to the top of the airbag 33 through the air pipe 346.

[0028] In this embodiment, the sealing mechanism 3 is inserted into the interior of the extraction tank body 1. When the sealing mechanism 3 is inserted to a certain position, the pressure plate 344 contacts the support ring, and as the sealing mechanism 3 continues to descend, the pressure plate 344 and the piston rod 343 are driven to rise. When rising, the pressure plate 344 and the piston rod 343 simultaneously drive the piston plate 342 to move upward, and the gas inside the piston cylinder 341 is injected into the interior of the airbag 33 through the connection between the air pipe 346 and the airbag 33, so that the airbag 33 expands, thereby increasing the sealing performance between the airbag 33 and the extraction tank body 1.

[0029] like Figure 1 and Figure 4As shown, the fixing assembly 35 includes two mounting shells 351 fixedly mounted on the tops of both sides of the extraction tank body 1, and plug rods 352 are fixedly mounted on both sides of the bottom of the cover body 2. The bottom ends of the plug rods 352 penetrate the mounting shells 351 and extend to the inside of the mounting shells 351. A limiting hole is provided on the surface of the plug rod 352, and a wedge block 353 is slidably mounted inside the limiting hole. A sliding rod 354 is fixedly mounted on one side of the wedge block 353. One end of the sliding rod 354 penetrates the mounting shells 351 and extends to the outside of the mounting shells 351. A handle 355 is fixedly mounted on one end of the sliding rod 354 located outside the mounting shell 351, and a second return spring 356 is fixedly mounted between the wedge block 353 and the sliding rod 354.

[0030] In this embodiment, the cover body 2 drives the insertion rod 352 to descend synchronously, so that the insertion rod 352 is inserted into the interior of the mounting housing 351. When the mounting housing 351 descends, the wedge block 353 is pushed against by the wedge-shaped design of the wedge block 353 and the insertion rod 352. When the insertion rod 352 is completely descended, the wedge block 353 automatically inserts into the interior of the limiting hole by the elasticity of the second return spring 356, and the insertion rod 352 is locked.

[0031] In this embodiment, a slide plate 357 is slidably installed at the bottom of the inner cavity of the mounting shell 351, and third return springs 358 are fixedly installed on both sides of the bottom of the slide plate 357. The bottom end of the third return spring 358 is fixedly connected to the bottom of the inner cavity of the mounting shell 351; it can elastically support the insertion rod 352 so that the rebound of the third return spring 358 can be used to drive the insertion rod 352 to rise slightly, so as to increase the stability of the cover body 2.

[0032] When the utility model is in use, the cover body 2 drives the insertion rod 352 to descend synchronously, so that the insertion rod 352 is inserted into the interior of the mounting shell 351. When the mounting shell 351 descends, the wedge block 353 is pushed against by the wedge-shaped design of the wedge block 353 and the insertion rod 352. When the insertion rod 352 is completely descended, the wedge block 353 automatically inserts into the interior of the limiting hole by the elasticity of the second return spring 356 to lock the insertion rod 352. When the cover body 2 descends, the sealing mechanism 3 is synchronously driven to be inserted into the extractor Taking the interior of the tank body 1, when the sealing mechanism 3 is inserted to a certain position, the pressure plate 344 contacts the support ring, and as the sealing mechanism 3 continues to descend, the pressure plate 344 and the piston rod 343 are driven to rise, and the pressure plate 344 and the piston rod 343 simultaneously drive the piston plate 342 to move upward when rising, and the gas inside the piston cylinder 341 is injected into the interior of the airbag 33 through the connection between the air pipe 346 and the airbag 33, so that the airbag 33 expands, so as to increase the sealing performance between the airbag 33 and the extraction tank body 1.

[0033] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laboratory extraction device with good sealing performance, characterized in that: include: An extraction tank body (1), wherein a cover body (2) is arranged on the top of the extraction tank body (1), and a support ring is fixedly installed on the top of the inner cavity of the extraction tank body (1); A sealing mechanism (3), wherein the sealing mechanism (3) is installed between the extraction tank body (1) and the cover body (2) and can increase the sealing performance between the two; The sealing mechanism (3) comprises an annular fixing plate (31) fixedly mounted on the bottom of the cover body (2); a sealing gasket (32) is fixedly mounted on the top of the outer surface of the annular fixing plate (31); an airbag (33) is mounted on the bottom of the outer surface of the annular fixing plate (31); a driving component (34) is installed through the inside of the annular fixing plate (31); the driving component (34) is used to increase the sealing performance of the airbag (33); fixing components (35) are installed on the top of both sides of the extraction tank body (1); the fixing components (35) are used to mount the cover body (2) on the top of the extraction tank body (1).

2. A laboratory extraction device with good sealing performance according to claim 1, characterized in that: The driving assembly (34) includes a plurality of piston cylinders (341) which are installed through the bottom of the annular fixed plate (31); a piston plate (342) is slidably installed at the bottom of the inner cavity of the piston cylinder (341); a piston rod (343) is fixedly installed at the bottom of the piston plate (342); the bottom end of the piston rod (343) passes through the piston cylinder (341) and extends to the outside of the piston cylinder (341); a pressure plate (344) is fixedly installed at the bottom end of the piston rod (343); a first return spring (345) is fixedly installed at the top of the piston plate (342); and the top end of the first return spring (345) is fixedly connected to the top of the inner cavity of the piston cylinder (341).

3. A laboratory extraction device with good sealing performance according to claim 2, characterized in that: The top end of the piston cylinder (341) is connected to an air pipe (346), and the top end of the piston cylinder (341) is connected to the top of the air bag (33) through the air pipe (346).

4. A laboratory extraction device with good sealing performance according to claim 1, characterized in that: The fixing assembly (35) comprises two mounting shells (351) fixedly mounted on the top of both sides of the extraction tank body (1); an insertion rod (352) is fixedly mounted on both sides of the bottom of the cover body (2); the bottom end of the insertion rod (352) passes through the mounting shell (351) and extends to the inside of the mounting shell (351); a limiting hole is provided on the surface of the insertion rod (352); a wedge block (353) is slidably mounted inside the limiting hole; a sliding rod (354) is fixedly mounted on one side of the wedge block (353); one end of the sliding rod (354) passes through the mounting shell (351) and extends to the outside of the mounting shell (351); a handle (355) is fixedly mounted on one end of the sliding rod (354) located outside the mounting shell (351); and a second return spring (356) is fixedly mounted between the wedge block (353) and the sliding rod (354).

5. A laboratory extraction device with good sealing performance according to claim 4, characterized in that: A slide plate (357) is slidably mounted at the bottom of the inner cavity of the mounting shell (351), and third return springs (358) are fixedly mounted on both sides of the bottom of the slide plate (357), and the bottom end of the third return spring (358) is fixedly connected to the bottom of the inner cavity of the mounting shell (351).

6. A laboratory extraction device with good sealing performance according to claim 1, characterized in that: The sealing gasket (32) is in an "O" shape and is made of a rubber component.

7. A laboratory extraction device with good sealing performance according to claim 1, characterized in that: The shape of the airbag (33) is "O-shaped" and the material of the airbag (33) is a rubber component.

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