Liquid taking device for formalin

Abstract

The utility model provides a liquid taking device for formalin, which comprises a liquid storage barrel, a shell, a pump body, a liquid outlet pipe, a liquid pumping pipe, a water outlet pipe, a water supply pipe, a collecting pipe, a mounting cylinder, a plunger and an elastic piece, a recycling pipe and a recycling mechanism are arranged on the collecting pipe in a communicated manner, and the recycling mechanism is in transmission connection with the plunger. The pump body is started to extract liquid to flow to the upper cavity of the mounting cylinder, the plunger is pushed by hydraulic pressure to move downwards until the water supply pipe is communicated with the mounting cylinder, the liquid flows out of the liquid outlet pipe for liquid extraction, the pump body is closed after liquid extraction is completed, and the elastic piece drives the plunger to move upwards to block the water supply pipe and stop liquid extraction. Residual liquid at the liquid outlet pipe is collected through cooperation of the recycling mechanism and the collecting pipe in the plunger upward moving process, the liquid is recycled into the liquid storage barrel through cooperation of the recycling mechanism, the collecting pipe and the recycling pipe in the process that the pump body is started next time to push the plunger to move downwards, and the effects of recycling and leakage prevention in the formalin liquid taking process are achieved; and safe use of medical staff is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of medical liquid extraction equipment, and particularly relates to a liquid extraction device for formalin. Background Art

[0002] Formalin is colorless and transparent in appearance and corrosive. In medicine, it can be used as a tissue fixative and preservative during inspections. Formalin is usually stored in a barrel. When in use, the lid at the liquid outlet of the barrel is opened and the liquid storage cylinder is lifted for pouring. This liquid extraction method is relatively cumbersome and laborious, and it is easy to accidentally spill formalin due to unstable manual operation. Currently, a water pump is used in combination with a pipeline structure for the liquid extraction of formalin. The water pump is installed at the liquid outlet of the barrel. The suction pipe of the water pump extends to the bottom of the barrel, and the outlet pipe of the water pump is located outside the barrel. By pressing the water pump switch, formalin solution can be received from the outlet pipe. However, when extracting liquid, it is often easy for liquid to remain in the outlet pipe. Even after the pump body is turned off, there is still liquid accumulation at the outlet pipe, and accidental dripping is likely to occur, which is not conducive to the safe use by medical staff. Content of the Utility Model

[0003] The purpose of the utility model is to propose a liquid extraction device for formalin aiming at the deficiencies in the above technologies to solve the above problems.

[0004] The utility model provides a liquid extraction device for formalin, including:

[0005] A liquid storage barrel, on which a shell is detachably installed. A pump body and an outlet pipe are arranged on the shell. The suction end of the pump body is connected and communicated with a suction pipe extending to the bottom of the liquid storage barrel. The outlet end of the pump body is connected and communicated with an outlet pipe. The outlet pipe is sequentially connected and communicated with a water supply pipe and a collection pipe along its liquid outlet direction;

[0006] An installation cylinder, which is arranged on the shell. The outlet pipe is connected and communicated with the upper end of the installation cylinder. The water supply pipe is connected and communicated with the side wall of the installation cylinder. A one-way valve is arranged on the water supply pipe. A plunger for adjusting the communication state between the water supply pipe and the installation cylinder is movably arranged on the installation cylinder. The plunger divides the installation cylinder into an upper cavity and a lower cavity. The pump body provides hydraulic pressure to the upper cavity through the outlet pipe to push the plunger to move downward away from the water supply pipe. An elastic member is arranged at the lower cavity, and the elastic member acts on the plunger to drive the plunger to move upward close to and block the water supply pipe;

[0007] A recovery pipe and a recovery mechanism are connected to the collection pipe. The recovery pipe is connected to the liquid storage bucket, and the recovery mechanism is connected to the plunger in a driving manner and, in cooperation with the movement process of the plunger, drives the liquid at the liquid outlet pipe to flow back into the liquid storage bucket through the collection pipe and the recovery pipe.

[0008] Preferably, the recovery mechanism includes a cylinder body, a piston disk, a first one-way valve, and a second one-way valve. The piston disk is movably installed on the cylinder body. A transmission rod is provided on the piston disk. The transmission rod penetrates through the upper end of the cylinder body and the upper end of the installation cylinder and is connected to the plunger. The collection pipe is connected to the bottom of the cylinder body. The first one-way valve is provided at the connection between the collection pipe and the liquid outlet pipe, and the second one-way valve is provided at the connection between the collection pipe and the recovery pipe.

[0009] Preferably, an upper abutting portion and a lower abutting portion for the piston disk to abut against are respectively provided at the upper end and the lower end of the cylinder body. The elastic member acts on the plunger to drive the piston disk to abut against the upper abutting portion through the transmission rod.

[0010] Preferably, the elastic member is a spring. The spring is used to push against the plunger to drive the plunger to block and close the water supply pipe.

[0011] Preferably, the liquid outlet pipe is composed of a main pipe body and a bent pipe to form an L-shaped tubular structure.

[0012] Preferably, the main pipe body forms a 45-degree angle relative to the housing.

[0013] Preferably, the housing and the liquid storage bucket are installed by means of threaded connection.

[0014] Preferably, a button switch for controlling the working state of the pump body is provided on the housing.

[0015] Preferably, a handle is provided on the liquid storage bucket.

[0016] Preferably, the liquid storage bucket is made of white translucent PVC material.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] During operation, the pump body is started to extract liquid, which flows through the outlet pipe to the upper cavity of the installation cylinder. Under hydraulic action, the plunger is pushed downward until the plunger is away from the water supply pipe. The water supply pipe is communicated with the installation cylinder, and the one-way valve at the water supply pipe opens. The liquid flows out through the water supply pipe and the liquid outlet pipe for liquid extraction work. After the liquid extraction is completed, the pump body is closed. The elastic member drives the plunger to move upward to block the water supply pipe, stopping the liquid outlet work. The one-way valve at the water supply pipe closes, and the liquid in the upper cavity of the installation cylinder is squeezed and flows back through the outlet pipe to the pump body and the liquid storage bucket. During the upward movement of the plunger, the residual liquid at the liquid outlet pipe is collected through the cooperation of the recovery mechanism and the collection pipe. During the next start of the pump body to push the plunger downward, the liquid is recovered into the liquid storage bucket through the cooperation of the recovery mechanism, the collection pipe and the recovery pipe, playing a role in recovering and preventing dripping during the formalin liquid extraction process, which is beneficial to the safe use by medical staff. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the preferred embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 External structural schematic diagram of a certain embodiment of the present invention;

[0021] Figure 2 Internal structural schematic diagram of a certain embodiment of the present invention;

[0022] Figure 3 Structural schematic diagram of the recovery mechanism in a certain embodiment of the present invention.

[0023] In the figure, 1 - liquid storage bucket; 11 - handle; 2 - housing; 21 - pump body; 22 - liquid suction pipe; 23 - outlet pipe; 3 - liquid outlet pipe; 31 - main pipe body; 32 - bent pipe; 4 - water supply pipe; 41 - one-way valve; 5 - collection pipe; 51 - recovery pipe; 6 - installation cylinder; 61 - plunger; 62 - upper cavity; 63 - lower cavity; 7 - elastic member; 8 - recovery mechanism; 81 - cylinder body; 82 - piston disc; 821 - transmission rod; 83 - first one-way valve; 84 - second one-way valve; 9 - button switch. Detailed Description of the Embodiments

[0024] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0025] Embodiment 1:

[0026] Reference Figures 1 to 3 The utility model provides a liquid taking device for formalin, comprising:

[0027] A liquid storage barrel 1, on which a shell 2 is detachably mounted, a pump body 21 and a liquid outlet pipe 3 are provided on the shell 2, a liquid extraction end of the pump body 21 is connected with a liquid extraction pipe 22 extending to the bottom of the liquid storage barrel 1, a liquid outlet end of the pump body 21 is connected with a water outlet pipe 23, and the liquid outlet pipe 3 is sequentially connected with a water supply pipe 4 and a collecting pipe 5 along its liquid outlet direction;

[0028] The installation cylinder 6 is arranged on the housing 2, the water outlet pipe 23 is connected to the upper end of the installation cylinder 6, the water supply pipe 4 is connected to the side wall of the installation cylinder 6, a one-way valve 41 is arranged on the water supply pipe 4, a plunger 61 for adjusting the connection state between the water supply pipe 4 and the installation cylinder 6 is movably arranged on the installation cylinder 6, and the plunger 61 divides the installation cylinder 6 into an upper chamber 62 and a lower chamber 63. The pump body 21 provides hydraulic pressure to the upper chamber 62 through the water outlet pipe 23 to push the plunger 61 to move downward away from the water supply pipe 4, and an elastic member 7 is arranged at the lower chamber 63, and the elastic member 7 acts on the plunger 61 to drive the plunger 61 to move upward close to and block the water supply pipe 4;

[0029] A recovery pipe 51 and a recovery mechanism 8 are connected to the collecting pipe 5, the recovery pipe 51 is connected to the liquid storage barrel 1, the recovery mechanism 8 is transmission-connected to the plunger 61 and cooperates with the movement of the plunger 61 to drive the liquid at the liquid outlet pipe 3 to flow through the collecting pipe 5 and the recovery pipe 51 and flow back into the liquid storage barrel 1.

[0030] During operation, the pump body 21 is started to extract liquid through the water outlet pipe 23 to the upper chamber 62 of the installation cylinder 6. Under the action of the hydraulic pressure, the plunger 61 is pushed downward until the plunger 61 is away from the water supply pipe 4. The one-way valve 41 at the water supply pipe 4 is opened, the water supply pipe 4 is connected to the installation cylinder 6, and the liquid flows out through the water supply pipe 4 and the liquid outlet pipe 3 to perform the liquid extraction work. After the liquid extraction is completed, the pump body 21 is closed, and the elastic member 7 drives the plunger 61 to move upward to block the water supply pipe 4, stopping the liquid extraction work. When the valve 41 is closed, the liquid in the upper chamber 62 of the installation cylinder 6 is squeezed and flows back to the pump body 21 and the liquid storage barrel 1 through the outlet pipe 23. During the upward movement of the plunger 61, the residual liquid at the liquid outlet pipe 3 is collected by the recovery mechanism 8 and the collecting pipe 5. When the pump body 21 is started next time to push the plunger 61 downward, the recovery mechanism 8, the collecting pipe 5 and the recovery pipe 51 are cooperated to recover the liquid into the liquid storage barrel 1, which plays a role in recovery and drip prevention in the formalin extraction process, and is beneficial to the safe use of medical staff.

[0031] Specifically, the recovery mechanism 8 includes a cylinder body 81, a piston disc 82, a first one-way valve 83, and a second one-way valve 84. The piston disc 82 is movably mounted on the cylinder body 81. A transmission rod 821 is provided on the piston disc 82. The transmission rod 821 penetrates through the upper end of the cylinder body 81 and the upper end of the installation cylinder 6 and is connected to the plunger 61. The collection pipe 5 communicates with the bottom of the cylinder body 81. A first one-way valve 83 is provided at the connection between the collection pipe 5 and the liquid outlet pipe 3. A second one-way valve 84 is provided at the connection between the collection pipe 5 and the recovery pipe 51. The first one-way valve 83 is only used for allowing liquid to flow from the liquid outlet pipe 3 to the collection pipe 5, and the second one-way valve 84 is only used for allowing liquid to flow from the collection pipe 5 to the recovery pipe 51.

[0032] Specifically, an upper abutting portion and a lower abutting portion for the piston disc 82 to abut against are respectively provided at the upper and lower ends of the cylinder body 81. The elastic member 7 acts on the plunger 61 to drive the piston disc 82 to abut against the upper abutting portion through the transmission rod 821.

[0033] Specifically, the elastic member 7 is a spring. The spring is used to push against the plunger 61 to drive the plunger 61 to block and close the water supply pipe 4.

[0034] After starting the pump body 21, the pump body 21 extracts the liquid and flows it through the water outlet pipe 23 to the upper cavity 62 of the installation cylinder 6. Under the hydraulic action, the plunger 61 is pushed downward until the plunger 61 is far away from the water supply pipe 4. The spring is in a compressed state. The water supply pipe 4 communicates with the installation cylinder 6. The liquid flows out through the water supply pipe 4 and the liquid outlet pipe 3 to perform the liquid extraction work. After the liquid extraction is completed, the pump body 21 is turned off. The spring resets to drive the plunger 61 to move upward to block the water supply pipe 4 and stop the liquid outlet work. During the upward movement of the plunger 61, the piston disc 82 is driven by the transmission rod 821 to move upward in the cylinder body 81 and generate a negative pressure at the cylinder body 81 until the piston disc 82 abuts against the upper abutting portion of the cylinder body 81. And during the upward movement of the plunger 61, the side surface of the plunger 61 can maintain the state of blocking the water supply pipe 4. The first one-way valve 83 opens and the second one-way valve 84 closes. The residual liquid at the liquid outlet pipe 3 is extracted to the cylinder body 81 through the collection pipe 5. This part of the liquid is temporarily stored in the cylinder body 81, realizing the collection of the residual liquid at the liquid outlet pipe 3 and playing a good role in preventing dripping. When liquid extraction is needed next time, when starting the pump body 21 to push the plunger 61 downward, the plunger 61 drives the piston disc 82 to move downward in the cylinder body 81 through the transmission rod 821 and squeezes the liquid temporarily stored in the cylinder body 81. The second one-way valve 84 opens and the first one-way valve 83 closes. The liquid temporarily stored at the cylinder body 81 is squeezed into the liquid storage cylinder through the recovery pipe 51 to realize the recovery work of the liquid. Until the piston disc 82 abuts against the lower abutting portion of the cylinder body 81, the plunger 61 just moves away from the water supply pipe 4 to drive the water supply pipe 4 to communicate with the installation cylinder 6 for liquid extraction work, playing a role in preventing dripping and recovering during the formalin liquid extraction process, which is beneficial to the safe use by medical staff.

[0035] Embodiment 2:

[0036] Reference Figures 1 to 3 Combined with the technical solution of Embodiment 1, in this embodiment, the liquid outlet pipe 3 is composed of a main pipe body 31 and a bent pipe 32 to form an L-shaped tubular structure.

[0037] Specifically, the main pipe body 31 forms a 45-degree angle relative to the housing 2.

[0038] Adopting the L-shaped pipe structure composed of the main pipe body 31 and the bent pipe 32 and the main pipe body 31 forming a 45-degree angle relative to the housing 2 is beneficial for the residual liquid at the bent pipe 32 to be smoothly discharged after the pump body 21 stops, and the residual liquid at the main pipe body 31 can be temporarily retained in the main pipe body 31 under the action of gravity and cooperate with the elastic member 7, the plunger 61 and the recovery mechanism 8 to recover it, which is beneficial for the anti-drip and recovery work of the liquid.

[0039] Specifically, the housing 2 and the liquid storage barrel 1 are installed in a threaded connection manner. The housing 2 can be removed for cleaning, maintenance and liquid replacement as needed.

[0040] Specifically, a button switch 9 for controlling the working state of the pump body 21 is provided on the housing 2. By pressing the button switch 9, the start and stop of the pump body 21 can be controlled, and the collection and recovery of the residual liquid can be automatically carried out during the process of starting and stopping the pump body 21, providing operational convenience for the liquid extraction work.

[0041] Specifically, a handle 11 is provided on the liquid storage barrel 1. The whole device can be conveniently carried and transported through the handle 11.

[0042] Specifically, the liquid storage barrel 1 is made of white translucent PVC material. The liquid storage barrel 1 made of white translucent PVC material can meet the low light storage requirements of formalin and at the same time can see the liquid storage volume inside the liquid storage barrel 1 through its white translucent barrel body, which is convenient for timely supplement of formalin solution.

[0043] The above is only the preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above technical content without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention without departing from the content of the technical solution of the present invention all belong to the protection scope of this technical solution.

Claims

1. A liquid extraction device for formalin, characterized in that Including: A liquid storage bucket, on which a housing is detachably installed. A pump body and a liquid outlet pipe are arranged on the housing. A liquid suction pipe extending to the bottom of the liquid storage bucket is communicated with the liquid suction end of the pump body. A water outlet pipe is communicated with the liquid outlet end of the pump body. The liquid outlet pipe is sequentially communicated with a water supply pipe and a collection pipe along its liquid outlet direction. An installation cylinder, which is arranged on the housing. The water outlet pipe is communicated with the upper end of the installation cylinder. The water supply pipe is communicated with the side wall of the installation cylinder. A one-way valve is arranged on the water supply pipe. A plunger for adjusting the communication state between the water supply pipe and the installation cylinder is movably arranged on the installation cylinder. The plunger divides the installation cylinder into an upper chamber and a lower chamber. The pump body provides hydraulic pressure to the upper chamber through the water outlet pipe to push the plunger to move downward away from the water supply pipe. An elastic member is arranged at the lower chamber. The elastic member acts on the plunger to drive the plunger to move upward close to and block the water supply pipe. A recovery pipe and a recovery mechanism are communicated with the collection pipe. The recovery pipe is communicated with the liquid storage bucket. The recovery mechanism is in transmission connection with the plunger and cooperates with the movement process of the plunger to drive the liquid at the liquid outlet pipe to flow through the collection pipe and the recovery pipe and flow back into the liquid storage bucket.

2. The liquid taking device for formalin according to claim 1, characterized in that: The recovery mechanism includes a cylinder body, a piston disc, a first one-way valve and a second one-way valve. The piston disc is movably installed on the cylinder body. A transmission rod is arranged on the piston disc. The transmission rod penetrates through the upper end of the cylinder body and the upper end of the installation cylinder and is connected with the plunger. The collection pipe is communicated with the bottom of the cylinder body. The first one-way valve is arranged at the communication place between the collection pipe and the liquid outlet pipe. The second one-way valve is arranged at the communication place between the collection pipe and the recovery pipe.

3. The liquid taking device for formalin according to claim 2, characterized in that: An upper abutting part and a lower abutting part for the piston disc to abut against are respectively arranged at the upper end and the lower end of the cylinder body. The elastic member acts on the plunger to drive the piston disc to abut against the upper abutting part through the transmission rod.

4. The liquid taking device for formalin according to claim 1, characterized in that: The elastic member is a spring, and the spring is used to push the plunger to drive the plunger to block and be close to the water supply pipe.

5. The liquid taking device for formalin according to claim 1, characterized in that: The liquid outlet pipe is composed of a main pipe body and a bent pipe to form an L-shaped tubular structure.

6. The liquid taking device for formalin according to claim 5, characterized in that: The main pipe body is at an angle of 45 degrees relative to the housing.

7. The liquid taking device for formalin according to claim 1, characterized in that: The housing and the liquid storage bucket are installed in a threaded connection manner.

8. The liquid taking device for formalin according to claim 1, characterized in that: A button switch for controlling the working state of the pump body is arranged on the housing.

9. A liquid extraction device for formalin according to claim 1, characterized in that: A handle is provided on the liquid storage barrel.

10. A liquid extraction device for formalin according to claim 1, characterized in that: The liquid storage barrel is made of white semi-transparent PVC material.

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