Connecting device for preparing diethoxyethylphosphane

Abstract

The connecting device comprises a collecting bottle and a glass bottle, a collecting cover is arranged on the outer wall of the collecting bottle, an air inlet pipe and a conveying pipe are arranged on the inner wall of the collecting cover respectively, a sealing cover is arranged at one end of the conveying pipe, a supporting block is arranged on the inner wall of the sealing cover, and the supporting block is connected with the glass bottle. The device comprises a collecting bottle, a glass bottle, a collecting cover, an air inlet pipe, a conveying pipe, a sealing cover, a supporting block, a positioning block, a limiting block and a sealing ring, the top of the supporting block is provided with a positioning block, the bottom of the supporting block is provided with a limiting block, and the inner wall of the positioning block is provided with a sealing ring. And sealing work is kept when the conveying pipe is pulled out to seal the glass bottle, so that the sealing effect is improved, the problem of easy leakage is solved, the working requirements of people are met, and the device is worthy of popularization and application.

Description

Technical Field

[0001] The utility model belongs to the technical direction of bisphosphine, and specifically relates to a connecting device for preparing bisphosphine. Background Art

[0002] Sinnfosmin for injection is a technetium-labeled drug kit. The 99mTc-tetrofosmin (99mTc-phosphine) injection obtained by labeling with the radioactive isotope technetium is a radioactive diagnostic drug clinically used for myocardial perfusion imaging. The radiochemical purity of 9mTc-tetrofosmin injection is the key to the quality of clinical imaging, and the purity of its ligand compound phosphine (chemical name 1,2-bis[bis(2-ethoxyethyl)phosphino]ethane) is the key to its radiochemical purity.

[0003] The usual method for synthesizing bisphosphine is as follows: ethylenediphosphine (H2PC2H4PH2 chemical name 1,2-bis(phosphino)ethane) and vinyl ethyl ether are mixed, then azobisisobutyronitrile is added, the mixture is sealed with nitrogen, and then placed in an oil bath at 75°C for 16 hours, and then cooled to room temperature. After cooling, the reactants are distilled at 80°C under reduced pressure for 1 hour. During this process, unreacted vinyl ethyl ether and ethylenediphosphine are removed, and azobisisobutyronitrile is decomposed into low molecular weight substances that are continuously evaporated, and the remaining is bisphosphine.

[0004] When preparing phosphine, it is necessary to connect a collection bottle containing a mixture of vinyl ethyl ether and ethylenediphosphine to a glass tube through a hose. In the subsequent process of pulling out the hose and sealing it by screwing on the cap, leakage is likely to occur. Therefore, a connecting device for preparing phosphine is urgently needed to solve the above-mentioned problem. Utility Model Content

[0005] The utility model aims to provide a connecting device for preparing bisphosphine in view of the existing device, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a connecting device for preparing bis(ethoxyethylphosphine), comprising a collecting bottle and a glass bottle, wherein the outer wall of the collecting bottle is provided with a collecting cover, the inner wall of the collecting cover is respectively provided with an air inlet pipe and a delivery pipe, one end of the delivery pipe is provided with a sealing cover, the inner wall of the sealing cover is provided with a supporting block, the top of the supporting block is provided with a positioning block, the bottom of the supporting block is provided with a limiting block, and the inner wall of the positioning block is provided with a sealing ring. By providing the collecting bottle, the glass bottle, the collecting cover, the air inlet pipe, the delivery pipe, the sealing cover, the supporting block, the positioning block, the limiting block and the sealing ring, it is convenient to seal when conveying the mixed liquid, and the sealing work is maintained when the delivery pipe is pulled out to close the glass bottle, thereby improving the sealing effect, solving the problem of easy leakage, meeting people's work needs, and being worthy of popularization and use.

[0007] Furthermore, the sealing cover matches the glass bottle, and the delivery tube passes through the sealing cover through the support block and extends into the interior of the glass bottle, which facilitates closing the glass bottle through the sealing cover.

[0008] Furthermore, the support block is an integrated structure with the positioning block and the limit block, and the support block, the positioning block and the limit block are arranged in an "I" shape, which facilitates the installation of the support block, the positioning block and the limit block.

[0009] Furthermore, the positioning block is a "concave"-shaped structure, and the sealing ring is engaged with the positioning block, which facilitates the positioning of the sealing ring.

[0010] Furthermore, the sealing ring is fixed to the outer wall of the delivery pipe, and the delivery pipe is connected to the positioning block through the sealing ring, thereby improving the sealing effect between the delivery pipe and the positioning block.

[0011] Furthermore, the limit block is an elastic structure, and the bottom of the limit block is in a cone shape, which facilitates the deformation of the limit block after being squeezed.

[0012] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0013] (1) By providing a collecting bottle, a glass bottle, a collecting cover, an air inlet pipe, a conveying pipe, a sealing cover, a supporting block, a positioning block, a limiting block and a sealing ring, it is convenient to seal when conveying the mixed liquid, and the sealing work is maintained when the conveying pipe is pulled out to close the glass bottle, thereby improving the sealing effect, solving the problem of easy leakage, meeting people's work needs, and worthy of promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 The utility model Figure 1 The enlarged schematic diagram at A in the middle;

[0017] Figure 3 It is a schematic diagram of the connection between the support block and the positioning block of the utility model.

[0018] In the figure: 1. collecting bottle; 2. glass bottle; 3. collecting cover; 4. air inlet pipe; 5. delivery pipe; 6. sealing cover; 7. supporting block; 8. positioning block; 9. limiting block; 10. sealing ring. DETAILED DESCRIPTION

[0019] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0020] See also Figure 1-3 The utility model provides a technical solution: a connecting device for preparing bis(ethoxyethyl)phosphine, comprising a collecting bottle 1 and a glass bottle 2, wherein the outer wall of the collecting bottle 1 is provided with a collecting cover 3, the inner wall of the collecting cover 3 is respectively provided with an air inlet pipe 4 and a delivery pipe 5, a sealing cover 6 is provided at one end of the delivery pipe 5, a supporting block 7 is provided on the inner wall of the sealing cover 6, a positioning block 8 is provided on the top of the supporting block 7, a limiting block 9 is provided on the bottom of the supporting block 7, and a sealing ring 10 is provided on the inner wall of the positioning block 8. By providing the collecting bottle 1, the glass bottle 2, the collecting cover 3, the air inlet pipe 4, the delivery pipe 5, the sealing cover 6, the supporting block 7, the positioning block 8, the limiting block 9 and the sealing ring 10, it is convenient to seal when conveying the mixed liquid, and the sealing work is maintained when the delivery pipe 5 is pulled out to close the glass bottle 2, thereby improving the sealing effect, solving the problem of easy leakage, meeting people's work needs, and worthy of popularization and use.

[0021] Furthermore, the sealing cover 6 cooperates with the glass bottle 2 , and the delivery tube 5 passes through the sealing cover 6 through the support block 7 and extends into the interior of the glass bottle 2 , which facilitates the sealing of the glass bottle 2 through the sealing cover 6 .

[0022] Furthermore, the support block 7 is an integrated structure with the positioning block 8 and the limit block 9, and the support block 7, the positioning block 8 and the limit block 9 are arranged in an "I" shape, which facilitates the installation of the support block 7, the positioning block 8 and the limit block 9.

[0023] Furthermore, the positioning block 8 is a “concave” shaped structure, and the sealing ring 10 is engaged with the positioning block 8 , which facilitates the positioning of the sealing ring 10 .

[0024] Furthermore, the sealing ring 10 is fixed to the outer wall of the delivery pipe 5 , and the delivery pipe 5 is connected to the positioning block 8 through the sealing ring 10 , thereby improving the sealing effect between the delivery pipe 5 and the positioning block 8 .

[0025] Furthermore, the limiting block 9 is an elastic structure, and the bottom of the limiting block 9 is in a cone shape, which facilitates the deformation of the limiting block 9 after being squeezed.

[0026] When in use, firstly, the support block 7 drives the limit block 9 to be inserted into the inner wall of the sealing cover 6, so that the outer wall of the limit block 9 is deformed by its own elastic structure after being squeezed, thereby ensuring that the limit block 9 effectively slides into the interior of the sealing cover 6, and seals the through hole of the sealing cover 6 after recovering to its original state, and then the sealing cover 6 is screwed to the outer wall of the glass bottle 2, and then the delivery tube 5 is inserted into the interior of the glass bottle 2 through the support block 7. In this process, the delivery tube 5 will squeeze the inner wall of the limit block 9, so that after its deformation, it is ensured that the delivery tube 5 is inserted. After the delivery tube 5 passes through, the inner wall of the limit block 9 returns to its original state and presses against the outer wall of the delivery tube 5 to form a sealing effect, and the delivery tube 5 drives the sealing ring 10 to insert into the interior of the positioning block 8, so that the connection between the positioning block 8 and the delivery tube 5 is sealed, thereby improving the safety of the input gas. When the preparation is completed, the delivery tube 5 is pulled out. During the pulling-out process, the limit block 9 will gradually return to its original state due to its elasticity, thereby ensuring the sealing effect of the sealing cover 6 on the glass bottle 2 and preventing leakage when the delivery tube 5 is pulled out.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A connecting device for preparing phosphine, comprising a collecting bottle (1) and a glass bottle (2), characterized in that: The outer wall of the collecting bottle (1) is provided with a collecting cover (3), the inner wall of the collecting cover (3) is respectively provided with an air inlet pipe (4) and a delivery pipe (5), one end of the delivery pipe (5) is provided with a sealing cover (6), the inner wall of the sealing cover (6) is provided with a supporting block (7), the top of the supporting block (7) is provided with a positioning block (8), the bottom of the supporting block (7) is provided with a limiting block (9), and the inner wall of the positioning block (8) is provided with a sealing ring (10).

2. A connecting device for preparing bisphosphine according to claim 1, characterized in that: The sealing cover (6) is matched with the glass bottle (2), and the delivery pipe (5) passes through the sealing cover (6) through the support block (7) and extends into the interior of the glass bottle (2).

3. A connecting device for preparing bisphosphine according to claim 1, characterized in that: The support block (7) is an integrated structure with the positioning block (8) and the limit block (9), and the support block (7), the positioning block (8) and the limit block (9) are arranged in an "I" shape.

4. A connecting device for preparing bisphosphine according to claim 1, characterized in that: The positioning block (8) is a "concave"-shaped structure, and the sealing ring (10) is engaged with the positioning block (8).

5. A connecting device for preparing bisphosphine according to claim 1, characterized in that: The sealing ring (10) is fixed to the outer wall of the delivery pipe (5), and the delivery pipe (5) is connected to the positioning block (8) via the sealing ring (10).

6. A connecting device for preparing bisphosphine according to claim 1, characterized in that: The limiting block (9) is an elastic structure, and the bottom of the limiting block (9) is in a cone shape.

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