CN212238493U

CN212238493U - Nested formula pumping head

Info

Publication number: CN212238493U
Application number: CN202020222065.1U
Authority: CN
Inventors: 陈继欣; 高雨飞
Original assignee: Jiangxi Xili Technology Co ltd
Current assignee: Jiangxi Xili Technology Co ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-12-29
Anticipated expiration: 2030-02-27

Abstract

The application relates to a nested formula suction head. The nested pumping head comprises a shell, and two opposite ends of the shell are respectively provided with a joint and a pumping port. The water pumping pipe is arranged in the shell. And the supporting piece is fixedly arranged at one end, far away from the water pumping port, of the water pumping pipe. The blocking piece is arranged in the shell and is movably sleeved on the water pumping pipe. The blocking piece is located between the supporting piece and the water pumping port, the diameter of the blocking piece is larger than that of the water pumping port and smaller than that of the inner cavity of the shell, and two ends of the elastic element are respectively abutted to the supporting piece and the blocking piece. The water remained at the bottom of the dissolving-out cup can be pumped out through the water pumping pipe, so that the residual liquid at the bottom of the dissolving-out cup can be avoided. Meanwhile, in the earlier stage of liquid extraction, water is drained through the gap between the inner wall of the shell and the blocking piece, and the drainage rate can be improved.

Description

Nested formula pumping head

Technical Field

The application relates to the field of experiments, in particular to a nested water pumping head.

Background

The development of the medicine needs to be carried out with dissolution test, so that a dissolution cup is needed as an experimental container. The cleanliness of the dissolution cup after the test is finished has high requirements. When the dissolution cup cleaning instrument which has higher efficiency and better effect than manual cleaning is used, residual liquid in the dissolution cup needs to be sucked up as far as possible. When the bottom of the dissolution cup is arc-shaped, the residual liquid in the dissolution cup is difficult to be completely absorbed, which brings inconvenience to subsequent experiments.

Disclosure of Invention

In view of the above, it is desirable to provide a nested pumping head that addresses the above-mentioned problems.

A nested pumping head comprising:

the water pump comprises a shell, wherein two opposite ends of the shell are respectively provided with a joint and a water pumping port;

the water pumping pipe is arranged in the shell;

the supporting piece is fixedly arranged at one end of the water pumping pipe, which is far away from the water pumping port;

block piece, set up in the casing to the movable sleeve is located the drinking-water pipe, block piece is located support piece with between the mouth draws water, the diameter that blocks is greater than the diameter of drawing water mouth, and be less than the diameter of casing inner chamber to and

and two ends of the elastic element are respectively abutted against the supporting piece and the blocking piece.

In one embodiment, the water pumping device further comprises a water sucking cover sleeved at one end of the water pumping pipe far away from the support.

In one embodiment, the open edge of the side of the suction hood remote from the support is provided with at least one opening.

In one embodiment, still include the stock solution chamber, set up in the drinking-water pipe is kept away from the one end of drawing water mouthful, the diameter in stock solution chamber be greater than with the diameter of articulate pipeline, the drinking-water pipe draw water mouthful with the stock solution chamber set up in the same axis of casing.

In one embodiment, a wide-mouth cavity is arranged at one end, close to the joint, of the water pumping pipe, and the liquid storage cavity is arranged in the wide-mouth cavity in a suspended mode.

In one embodiment, the liquid storage device further comprises a supporting sleeve sleeved outside the wide mouth cavity, and the liquid storage cavity is fixedly arranged on the supporting sleeve.

In one embodiment, the diameter of the pumping port is smaller than the maximum diameter of the housing.

In one embodiment, the housing comprises a first sub-housing and a second sub-housing, the first sub-housing and the second sub-housing being detachably connected.

In one embodiment, the center of gravity of the nested pumping head is located on the side of the housing adjacent to the suction hood.

In one embodiment, the mass of the suction cup is greater than the sum of the housing, the suction tube, the support, the stopper and the resilient element.

The nested formula suction head that this application embodiment provided, including casing, drinking-water pipe, support piece, stop and elastic element. The interior of the housing is evacuated through the fitting, and the barrier is evacuated due to a reduction in air pressure on a side of the housing adjacent the fitting. Because the diameter of the blocking part is smaller than that of the inner cavity of the shell, when the blocking part ascends for a certain position, a gap is formed between the blocking part and the inner wall of the shell. At this point, liquid in the dissolution cup enters the housing along the space between the inner wall of the housing and the barrier and is drawn out of the dissolution cup along the adapter. When the amount of the liquid remained in the dissolution cup is not enough to jack up the blocking piece again, the elastic element pushes the blocking piece to block the water pumping port again. At this point, the vacuum continues to be drawn in the housing. Because the water pumping pipe stretches out the water pumping port, and the bottom of the dissolution cup is arc-shaped. The withdrawal tube is therefore closer to the bottom of the dissolution cup than the withdrawal port. At this time, the water remaining at the bottom of the dissolution cup can be pumped out through the water pumping pipe, so that the residual liquid at the bottom of the dissolution cup can be avoided. Meanwhile, in the earlier stage of liquid extraction, water is drained through the gap between the inner wall of the shell and the blocking piece, and the drainage rate can be improved.

Drawings

FIG. 1 is a schematic view of a nested pump head according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of a nested pumping head provided by an embodiment of the present application;

FIG. 3 is a cross-sectional view of a nested pumping head provided in accordance with another embodiment of the present application.

Description of reference numerals:

nested pumping head 10

Case 100

Joint 110

The pumping port 120

First sub-housing 130

Second sub-housing 140

Suction pipe 150

Support member 210

Barrier 220

Elastic element 230

Water absorption cover 240

Opening 242

Reservoir 250

Wide oral cavity 260

Support sleeve 270

And a seal 280.

Detailed Description

In order to make the purpose, technical solution and advantages of the present application more apparent, the nested water pumping head of the present application is further described in detail by the embodiments and with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-3, the present embodiment provides a nested pumping head 10. The nested head 10 comprises a housing 100, a suction pipe 150, a support 210, a stopper 220 and a resilient element 230. The opposite ends of the housing 100 are respectively provided with a joint 110 and a pumping port 120. The diameter of the middle portion of the housing 100 may be larger than the diameters of both ends. The adapter 110 may have external threads by which it may be connected to a vacuum pumping device such as a vacuum pump. The vacuum pump may draw air from the housing 100 through the fitting 110 to create a negative pressure within the housing 100. The pumping port 120 is used for pumping the liquid in the dissolution cup. The pumping tube 150 may be made of polyester or the like. The pumping pipe 150 is disposed inside the housing 100. The diameter of the pumping pipe 150 is smaller than that of the pumping port 120. I.e. there may be a gap between the suction pipe 150 and the suction port 120. The line connecting the joint 110 and the pumping port 120 may be an axis of the housing 100. The suction tube 150 may extend along the axis.

The supporting member 210 is fixedly disposed at an end of the pumping pipe 150 far away from the pumping port 120. The support member 210 may have a plate-shaped structure. The plate-like structure may have an opening in the middle. The suction pipe 150 may pass through the opening. The edge of the support 210 may be supported on the inner wall of the housing 100.

The blocking member 220 is disposed in the housing 100. The blocking member 220 is movably sleeved on the pumping pipe 150. The stop 220 is located between the support 210 and the pumping port 120. The diameter of the baffle 220 is larger than the diameter of the pumping port 120 and smaller than the diameter of the inner cavity of the housing 100. The stopper 220 may slide on the surface of the suction pipe 150. The barrier 220 may slide along the surface of the suction tube 150 when a pressure differential occurs across the barrier 220. Both ends of the elastic element 230 abut against the supporting member 210 and the blocking member 220, respectively. Thus, the stopper 220 may compress the resilient element 230 when the stopper 220 slides relative to the suction tube 150. When the pressure on the side of the pumping port 120 becomes small, the elastic member 230 may push the blocking member 220 to block the pumping port 120. In one embodiment, the elastic member 230 may be a compression spring.

In the embodiment of the present application, when the nested pumping head 10 is used, the nested pumping head 10 may be placed at the bottom of the dissolution cup. The pumping port 120 faces the bottom of the dissolution cup. Due to the gravity and the elastic force of the elastic element 230, the blocking member 220 will move towards the pumping port 120 and block the pumping port 120. Since the diameter of the baffle 220 is larger than the diameter of the pumping port 120, the baffle 220 blocks the pumping port 120. A vacuum is then drawn through the fitting 110 on the interior of the housing 100, and the barrier 220 is pulled up as the air pressure decreases on the side of the housing 100 adjacent the fitting 110. Since the diameter of the blocking member 220 is smaller than the diameter of the inner cavity of the housing 100, when the blocking member 220 ascends to a certain position, a gap is formed between the blocking member 220 and the inner wall of the housing 100. At this point, liquid in the dissolution cup enters the housing 100 along the space between the inner wall of the housing 100 and the barrier 220 and is drawn out of the dissolution cup along the adapter 110. When the amount of liquid remaining in the dissolution cup is not enough to jack up the stopper 220 again, the elastic element 230 pushes the stopper 220 to close the pumping port 120 again. At this point, the vacuum continues to be drawn into the housing 100. At this time, the water remaining at the bottom of the dissolution cup can be pumped out through the pumping pipe 150, so that the liquid remaining at the bottom of the dissolution cup can be prevented. Pumping water through the gap between the inner wall of the housing 100 and the barrier 220 in the early stage of pumping the liquid may have a large pumping amount, which may improve the rate of water discharge.

In one embodiment, the nested pumping head 10 further comprises a suction hood 240. The water suction cover 240 is sleeved on one end of the water suction pipe 150 far away from the support member 210. The water absorbing cover 240 may be made of rubber. The open mouth of the water absorption cover 240 can face the bottom of the dissolution cup. Therefore, the water absorption cover 240 can cover the residual liquid at the lowest position of the dissolution cup, so that the internal and external pressure difference can be conveniently increased and the water absorption rate can be increased when water is absorbed through the water absorption pipe at a later stage.

In one embodiment, the open edge of the side of the suction cover 240 away from the support member 210 is provided with at least one opening 242. When the residual liquid in the water absorption cover 240 is absorbed, the residual liquid remained outside the water absorption cover 240 can also enter the water absorption cover 240 through the opening 242, so that the purpose of thoroughly cleaning the residual liquid is achieved.

In one embodiment, the nested head 10 further includes a sump cavity 250. The reservoir chamber 250 is disposed at an end of the pumping tube 150 away from the pumping port 120. The reservoir 250 has a diameter greater than the diameter of the tubing connected to the fitting 1110. The water in the pumping tube 150 may flow from around the reservoir 250 to the joint 110. The pumping pipe 150, the pumping port 120 and the reservoir chamber 250 are disposed on the same axis of the housing 100. When the pumping pipe 150 absorbs the residual liquid, the liquid near the joint 110 and the liquid in the pipe connected to the joint 110 may fall due to the insufficient power. Since the reservoir 250 has a diameter larger than that of the pipe connected to the adapter 110, the liquid drops from the adapter 110 and the pipe connected to the adapter 110 can be dropped into the reservoir 250. The falling liquid can be stored through the liquid storage cavity 250, and the liquid is prevented from falling into the bottom of the dissolving cup again.

In one embodiment, a wide mouth 260 is disposed at one end of the pumping tube 150 close to the joint 110, and the reservoir 250 is suspended in the wide mouth 260. When pumping water from the pumping tube 150, the liquid flowing through the pumping tube 150 may enter the joint 110 through the gap between the wide mouth cavity 260 and the pumping tube 150.

In one embodiment, the wide mouth cavity 260, the pumping tube 150 and the supporting member 210 are integrally formed, thereby facilitating mold-opening manufacturing and improving production efficiency.

In one embodiment, the nested hydrohead 10 further includes a support sleeve 270. The support sleeve 270 is disposed outside the wide mouth cavity 260. The reservoir chamber 250 is fixedly disposed on the support sleeve 270. That is, the supporting sleeve 270 is sleeved outside the wide mouth cavity 260. And the support sleeve 270 may have an extension portion extending above the wide mouth cavity 260, the reservoir cavity 250 may be fixedly disposed on the extension portion.

In one embodiment, the nested head 10 further comprises a sealing ring 280 sleeved on the pumping pipe 150 and disposed between the pumping port 120 and the blocking member 220. Therefore, when the blocking member 220 blocks the pumping port 120, the sealing performance can be improved, and the difficulty of pumping the liquid through the pumping tube 150 can be reduced.

In one embodiment, the diameter of the pumping port 120 is less than the maximum diameter of the housing 100. I.e. there is a diameter variation between the pumping port 120 and the maximum diameter of the housing 100. The diameter of the middle portion of the housing 100 may be the largest. The diameter of the pumping port 120 is the smallest. The diameter of the stop 220 may be between the diameter of the pumping port 120 and the maximum diameter of the housing 100. The blocking member 220 can thus slide either out of or away from the pumping port 120.

In one embodiment, the housing 100 includes a first sub-housing 130 and a second sub-housing 140. The joint 110 is disposed on the first sub-housing 130, and the pumping port 120 is disposed on the second sub-housing 140. The first sub-housing 130 and the second sub-housing 140 are detachably connected. In one embodiment, the first sub-housing 130 and the second sub-housing 140 may be connected or inserted by bolts. Therefore, when the nested water pumping head 10 needs to be repaired, the first sub-housing 130 and the second sub-housing 140 can be disassembled, and the cleaning and the repairing are more convenient.

In one embodiment, a length-adjustable hard tube may be connected between the joint 110 and the vacuum-pumping device. A cleaning instrument may also be attached to the end of the wand remote from the fitting 110. The cleaning instrument can have the function of vacuumizing. The hard pipe is composed of two plastic pipes with higher hardness, the positions of the plastic pipes are relatively fixed by virtue of the friction force between pipe walls in a nested connection mode, and meanwhile, the tightness of the system can be guaranteed by virtue of tight contact. Due to the different sizes of different containers, the length of the hard pipe can be adjusted to adapt to different containers.

In one embodiment, the center of gravity of the nested head 10 is located on the side of the housing 100 adjacent to the suction cup 240. That is, the center of gravity of the nested pumping head 10 is located at a position below the center of the nested pumping head 10 as a whole. Thus, when the nested head 10 is inserted deep into the container, it is ensured that the pumping openings 120 of the nested head 10 are all oriented vertically downwards towards the bottom of the container. The nested pumping head 10 may be made of a material with a high mass density at a lower portion thereof, so that the center of gravity of the nested pumping head 10 is located at a side of the housing 100 close to the water suction cover 240.

In one embodiment, the connection between the fitting 110 and the evacuation device may also be via a flexible hose. Because the gravity center of the nested pumping head 10 is located at one side of the casing 100 close to the water suction cover 240, the nested pumping head 10 is not easy to topple when falling into the container through the flexible hose, so that the nested pumping head 10 can stably fall at the bottom of the container.

In one embodiment, the mass of the suction cap (240) is greater than the sum of the housing (100), the suction tube (150), the support (210), the stopper (220), and the elastic element (230). Since the water absorption cover 240 is located at one end of the housing, the center of gravity of the nested pumping head 10 can be located at the side of the housing 100 close to the water absorption cover 240.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present patent. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A nested pumping head, comprising:

the water pump comprises a shell (100), wherein two opposite ends of the shell (100) are respectively provided with a joint (110) and a water pumping port (120);

a suction pipe (150) disposed inside the housing (100);

the support piece (210) is fixedly arranged at one end, far away from the water pumping port (120), of the water pumping pipe;

block (220), set up in casing (100) to the movable sleeve is located the drinking-water pipe, block (220) are located support piece (210) with between mouth (120) draws water, the diameter that blocks (220) is greater than the diameter that draws water mouth (120) is, and is less than the diameter of casing (100) inner chamber, and

and two ends of the elastic element (230) are respectively abutted against the support (210) and the stopper (220).

2. A nested pumping head according to claim 1, further comprising a water suction hood (240) sleeved at an end of the pumping tube (150) remote from the support (210).

3. A nested pumping head according to claim 2, characterized in that the open edge of the side of the suction hood (240) remote from the support (210) is provided with at least one opening (242).

4. A nested suction head according to claim 1, further comprising a reservoir chamber (250) arranged at an end of the suction pipe remote from the suction port (120), the reservoir chamber (250) having a diameter larger than a diameter of a pipe connected to the joint (110), the suction pipe, the suction port (120) and the reservoir chamber (250) being arranged on a same axis of the housing (100).

5. The nested suction head as set forth in claim 4 wherein a wide mouth (260) is provided at an end of the suction pipe adjacent to the joint (110), the reservoir chamber (250) being provided in the wide mouth (260) in a suspended manner.

6. The nested pumping head as set forth in claim 5, further comprising a support sleeve (270) disposed outside the wide mouth cavity (260), the reservoir cavity (250) being fixedly disposed on the support sleeve (270).

7. A nested suction head according to claim 1, characterised in that the diameter of the suction opening (120) is smaller than the maximum diameter of the housing (100).

8. The nested hydrohead of claim 1, wherein the housing (100) comprises a first sub-housing (130) and a second sub-housing (140), the first sub-housing (130) and the second sub-housing (140) being detachably connected.

9. A nested pumping head according to claim 2, characterized in that the nested pumping head (10) has a centre of gravity on the side of the housing (100) adjacent to the suction hood (240).

10. A nested pumping head according to claim 9, characterized in that the mass of the suction hood (240) is greater than the sum of the housing (100), the pumping tube (150), the support (210), the stop (220) and the elastic element (230).