Underwater sampling and injecting device

Abstract

The utility model discloses an underwater sampling and injecting device which comprises a first driving unit, a first transmission unit, a sealing cylinder, a piston, a bidirectional injection head and a fixing plate, the first driving unit and the sealing cylinder are respectively fixed on the fixing plate, and the bidirectional injection head is installed at the front end of the sealing cylinder in a sealing mode and communicated with the sealing cylinder. The first driving unit is connected with the piston in the sealing cylinder and drives the piston to reciprocate along the sealing cylinder, the two-way injection head comprises a liquid inlet and a liquid outlet, the piston moves in the direction away from the two-way injection head along the sealing cylinder, the liquid inlet is opened, the liquid outlet is closed, and liquid enters the sealing cylinder; the piston moves in the direction close to the two-way injection head along the sealing cylinder, the liquid inlet is closed, the liquid outlet is opened, and liquid is squeezed out of the sealing cylinder. The maintenance-free operation equipment carried by the underwater robot is high in expansibility, simple in structure and capable of being used for multiple times for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater equipment, in particular to an underwater sampling and injection device. Background Art

[0002] With the rapid development of industry in today's society, ocean pollution is becoming increasingly serious. To help people understand the extent of ocean pollution and understand marine biodiversity and suitability, various substances and microorganisms in seawater are tested and analyzed to determine the quality and safety of seawater, thereby protecting the marine environment and human health.

[0003] Coral reefs play an important role in the marine ecosystem, providing a comfortable living environment for many animals and plants. Crown-of-thorns starfish, also known as the "coral killer," can devour about 2 square meters of coral a day after maturity. A coral reef visited by a crown-of-thorns starfish will only be left with a piece of white coral skeleton. Crown-of-thorns starfish have strong vitality, and their broken pieces can still grow into a complete crown-of-thorns starfish.

[0004] In summary, seawater sampling and the capture of underwater pests are important aspects of marine activities. Patent publication number CN111012541B discloses an underwater syringe for long-spined sea stars. However, the syringe's needle direction cannot be flexibly adjusted to meet operational requirements, resulting in limited flexibility. Furthermore, its first drive unit includes a sealed housing, a drive assembly, and a transmission assembly. Because it is used underwater, both the drive assembly and the transmission assembly must be housed within the sealed housing, placing high demands on sealing performance. Utility Model Content

[0005] The purpose of the utility model is to provide an underwater sampling and injection device, which solves the technical problem in the prior art that the needle direction of the underwater sampling and injection device is fixed and difficult to be flexibly adjusted according to work needs.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An underwater sampling and injection device includes a first drive unit, a first transmission unit, a sealing cylinder, a piston, a two-way injection head and a fixed plate. The first drive unit and the sealing cylinder are respectively fixed on the fixed plate. The two-way injection head is sealed and installed at the front end of the sealing cylinder and is connected thereto. The first drive unit is connected to the piston in the sealing cylinder, driving the piston to reciprocate along the sealing cylinder. The two-way injection head includes a liquid inlet and a liquid outlet. When the piston moves along the sealing cylinder away from the two-way injection head, the liquid inlet opens, the liquid outlet closes, and liquid enters the sealing cylinder. Conversely, when the piston moves along the sealing cylinder toward the two-way injection head, the liquid inlet closes, the liquid outlet opens, and liquid is squeezed out of the sealing cylinder.

[0008] As an implementation method, the first drive unit is a first servo that has been water-sealed, and the first transmission unit includes a swing arm, a connecting rod and a push rod. The first servo and the sealing cylinder are respectively fixed on the fixed plate, the rear end of the swing arm is fixed on the output shaft of the first servo, the front end of the swing arm is rotatably connected to the rear end of the connecting rod through a rotating shaft, the front end of the connecting rod is fixed to the rear end of the push rod through a rotating shaft, the front end of the push rod is sealed and extends into the rear end of the sealing cylinder, the piston is fixed at the front end of the push rod and reciprocates along the sealing cylinder, and the bidirectional injection head is fixed at the front end of the sealing cylinder.

[0009] It should be noted that: the first steering gear is fixed on the side fixing plate, and the side fixing plate is fixed on the fixing plate.

[0010] The underwater sampling and injection device also includes an angle adjustment unit, which is connected to the fixed plate to drive the fixed plate to rotate, and then drives the driving unit, sealing cylinder, piston and bidirectional injection head to rotate together.

[0011] As an implementation method, the angle adjustment unit includes a servo fixing part, a second servo, a carrying fixing part, and a fixing block. The second servo is fixed on the servo fixing part, one side of the fixing block is rotatably connected to the carrying fixing part, the second servo output shaft is connected to the other side of the fixing block, and the fixing block is fixed to one end of the fixed plate.

[0012] It should be noted that the angle adjustment assembly also includes a swing arm plate, which is fixed to the other side of the fixed block. The central gear hole of the swing arm plate is fully matched with the gear on the second servo output shaft and then locked and fixed.

[0013] It should be noted that the angle adjustment assembly also includes a cylindrical pin, one end of which is inserted into one side of the fixing block, and the other end of the cylindrical pin is rotatably connected to the mounting fixing piece.

[0014] It should be noted that the sealing cylinder includes a sealing cylinder fixing part, a hollow tube, an outer cylinder, a front end rubber pad and a rear end rubber pad. The two-way injection head is placed at the front end opening of the hollow tube after pressing the front end rubber pad. The outer cylinder is sleeved on the outside of the hollow tube, and the front end of the outer cylinder covers the interface between the two-way injection head and the hollow tube. The rear end of the hollow tube is pressed against the rear end rubber pad and inserted into the groove of the sealing cylinder fixing part. The piston moves back and forth along the hollow tube, and the front end seal of the push rod passes through the center hole of the sealing cylinder fixing part and is connected to one end of the piston.

[0015] The beneficial effects of the present invention are as follows: (1) the angle adjustment unit can flexibly adjust the injection direction of the bidirectional injection head, thereby improving the flexibility of the device; (2) only the first servo needs to be water-sealed, and the first transmission unit composed of the swing arm, the connecting rod and the push rod is directly exposed to the water, eliminating the need for a sealing shell and simplifying the watertight design requirements; (3) the structure can not only realize underwater sampling, but also can inject drugs into underwater organisms after being equipped with a needle, thereby killing harmful organisms; (4) a maintenance-free operation equipment is provided, which is carried by an underwater robot with strong expandability, simple structure and can be used multiple times for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the underwater sampling and injection device involved in Example 1.

[0017] Figure 2 This is a three-dimensional diagram of the underwater sampling and injection device involved in Example 1.

[0018] Figure 3 These are three stereoscopic diagrams of the underwater sampling and injection device involved in Example 1.

[0019] Figure 4 This is a cross-sectional view of the angle adjustment unit involved in Example 1.

[0020] Figure 5 This is a cross-sectional view of the connection structure of the sealing cylinder, piston and two-way injection head involved in Example 1. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and technical solutions.

[0022] Example 1

[0023] like Figures 1 to 3As shown in Figure 5, the present embodiment involves an underwater sampling and injection device, comprising a first drive unit 1, a first transmission unit 2, a sealing cylinder 3, a piston 4, a bidirectional injection head 5, and a fixed plate 6. The first drive unit 1 and the sealing cylinder 3 are respectively fixed on the fixed plate 6. The bidirectional injection head 5 is sealed and installed at the front end of the sealing cylinder 3 and is connected thereto. The first drive unit 1 is connected to the piston 4 in the sealing cylinder 3, driving the piston 4 to reciprocate along the sealing cylinder 3. The bidirectional injection head 5 includes a liquid inlet b and a liquid outlet a. The piston 4 moves along the sealing cylinder 3 in a direction away from the bidirectional injection head 5, the liquid inlet b opens, the liquid outlet a closes, and the liquid enters the sealing cylinder 3. Conversely, the piston 4 moves along the sealing cylinder 3 in a direction close to the bidirectional injection head 5, the liquid inlet b closes, the liquid outlet a opens, and the liquid is squeezed out of the sealing cylinder 3. The bidirectional injection head 5 can be the drug collection head 11 involved in the patent with publication number CN111012541A and invention name: A long-spined starfish underwater syringe and its integrated control platform.

[0024] The first drive unit 1 and the first transmission unit 2 can be structures well known to those skilled in the art. As an implementation method, the first drive unit 1 is a first servo 101 that has been water-sealed, and the first transmission unit 2 includes a swing arm 201, a connecting rod 202 and a push rod 203. The first servo 101 and the sealing cylinder 3 are respectively fixed on the fixed plate 6. The rear end of the swing arm 201 is fixed on the output shaft of the first servo 101, and the front end of the swing arm 201 is rotatably connected to the rear end of the connecting rod 202 through a rotating shaft. The front end of the connecting rod 202 is fixed to the rear end of the push rod 203 through a rotating shaft. The front end of the push rod 203 is sealed and extends into the rear end of the sealing cylinder 3. The piston 4 is fixed to the front end of the push rod 203 and reciprocates along the sealing cylinder 3. The bidirectional injection head 5 is fixed to the front end of the sealing cylinder 3. The first servo 101 rotates forward to drive the swing arm 201 to rotate, and pulls the push rod 203 out of the sealing cylinder 3 through the connecting rod 202, and the liquid medicine or the liquid sample to be drawn enters the sealing cylinder 3 through the liquid inlet b of the two-way injection head 5. The first servo 101 rotates backward to drive the swing arm 201 to rotate back to its original position, and pushes the push rod 203 into the sealing cylinder 3 through the connecting rod 202, and then the liquid medicine or the liquid sample to be drawn in the sealing cylinder 3 is pushed out through the liquid outlet a of the two-way injection head 5.

[0025] It should be noted that, for the convenience of assembly, the first steering gear 101 is fixed on the side fixing plate 102 , and the side fixing plate 102 is fixed on the fixing plate 6 .

[0026] like Figure 2-3 As shown, the underwater sampling and injection device involved in this embodiment also includes an angle adjustment unit 7, which is connected to the fixed plate 6 to drive the fixed plate 6 to rotate, and then drive the driving unit, the sealing cylinder 3, the piston 4 and the bidirectional injection head 5 to rotate together, thereby realizing the adjustment of the angle of the bidirectional injection head 5.

[0027] The angle adjustment unit 7 may be a structure well known to those skilled in the art. As an implementation method, Figure 4 As shown, the angle adjustment unit 7 includes a servo mount 701, a second servo 702, a mounting mount 703, and a fixing block 704. The second servo 702 is fixed to the servo mount 701. One side of the fixing block 704 is rotatably connected to the mounting mount 703. The output shaft of the second servo 702 is connected to the other side of the fixing block 704, which is fixed to one end of the fixing plate 6. The rotation of the second servo 702 drives the fixing block 704 and the fixing plate 6 to rotate about the output shaft of the second servo 702, thereby adjusting the injection angle of the bidirectional injection head 5. The second servo 702 is also watertight.

[0028] It should be noted that the angle adjustment assembly also includes a swing arm plate 705. The second servo 702 is fixed to the servo fixing part 701 by screws. The central gear hole of the swing arm plate 705 is fully matched with the gear on the output shaft of the second servo 702 and then locked by screws. The four threaded holes of the swing arm plate 705 are aligned with the swing arm plate fixing holes reserved in the fixing block 704, and the other end of the fixing block 704 is fixed with screws.

[0029] It should be noted that the angle adjustment assembly further includes a cylindrical pin 706 , one end of which is inserted into one side of the fixing block 704 , and the other end of which is rotatably connected to the mounting fixing member 703 .

[0030] It should be noted that: Figure 5 As shown, the sealing cylinder 3 includes a sealing cylinder fixing part 301, a hollow tube 302, an outer cylinder 303, a front end rubber pad 304 and a rear end rubber pad 305. The two-way injection head 5 presses the front end rubber pad 304 and is placed at the front end opening of the hollow tube 302. The outer cylinder 303 is sleeved on the outside of the hollow tube 302, and the front end of the outer cylinder 303 covers the interface between the two-way injection head 5 and the hollow tube 302 to seal the two. After the rear end of the hollow tube 302 presses the rear end rubber pad 305, it is inserted into the groove of the sealing cylinder fixing part 301 to realize the sealed connection. The piston 4 reciprocates along the hollow tube 302, and the front end of the push rod 203 is sealed and passes through the center hole of the sealing cylinder fixing part 301 and is connected to one end of the piston 4.

[0031] When an underwater sampling and injection device involved in this embodiment is used for sampling operations, the liquid outlet a is connected to a sterile collection bag, and the liquid inlet b is not connected. The first servo 101 rotates forward to drive the swing arm 201 to rotate, and the push rod 203 is pulled out from the sealing cylinder 3 through the connecting rod 202. The liquid sample to be drawn enters the sealing cylinder 3 through the liquid inlet b of the two-way injection head 5. The first servo 101 rotates backward to drive the swing arm 201 to rotate back to its original position, and pushes the push rod 203 into the sealing cylinder 3 through the connecting rod 202, and then the liquid sample to be drawn in the sealing cylinder 3 is pushed into the sterile collection bag through the liquid outlet a of the two-way injection head 5.

[0032] When an underwater sampling and injection device involved in this embodiment is used for injection operations, the liquid outlet a is connected to the needle, the liquid inlet b is connected to the medicine bag, and the second servo 702 is controlled to rotate, driving the fixed block 704 and the fixed plate 6 to rotate around the output shaft of the second servo 702 until the needle is aimed at the starfish waiting to kill the organism, and then the needle is controlled to be inserted into the starfish waiting to kill the organism, the first servo 101 rotates forward to drive the swing arm 201 to rotate, and the push rod 203 is pulled out of the sealing cylinder 3 through the connecting rod 202, and the medicine enters the sealing cylinder 3 through the liquid inlet b of the two-way injection head 5. The first servo 101 rotates reversely to drive the swing arm 201 to rotate back to its original position, and pushes the push rod 203 into the sealing cylinder 3 through the connecting rod 202, and then the medicine in the sealing cylinder 3 is pushed into the needle through the liquid outlet a of the two-way injection head 5.

Claims

1. An underwater sampling and injection device, characterized in that: It includes a first drive unit, a first transmission unit, a sealing cylinder, a piston, a two-way injection head and a fixed plate. The first drive unit and the sealing cylinder are respectively fixed on the fixed plate. The two-way injection head is sealed and installed at the front end of the sealing cylinder and is connected with it. The first drive unit is connected to the piston in the sealing cylinder, driving the piston to reciprocate along the sealing cylinder. The two-way injection head includes a liquid inlet and a liquid outlet. The piston moves along the sealing cylinder in a direction away from the two-way injection head, the liquid inlet opens, the liquid outlet closes, and the liquid enters the sealing cylinder. Conversely, the piston moves along the sealing cylinder in a direction close to the two-way injection head, the liquid inlet closes, the liquid outlet opens, and the liquid is squeezed out of the sealing cylinder.

2. The underwater sampling and injection device according to claim 1, characterized in that: The first driving unit is a first servo that has been water-sealed. The first transmission unit includes a swing arm, a connecting rod and a push rod. The first servo and the sealing cylinder are respectively fixed on the fixed plate. The rear end of the swing arm is fixed on the output shaft of the first servo, and the front end of the swing arm is rotatably connected to the rear end of the connecting rod through a rotating shaft. The front end of the connecting rod is fixed to the rear end of the push rod through the rotating shaft. The front end of the push rod is sealed and extends into the rear end of the sealing cylinder. The piston is fixed to the front end of the push rod and reciprocates along the sealing cylinder. The bidirectional injection head is fixed to the front end of the sealing cylinder.

3. The underwater sampling and injection device according to claim 2, characterized in that: The first steering gear is fixed on the side fixing plate, and the side fixing plate is fixed on the fixing plate.

4. The underwater sampling and injection device according to claim 1, characterized in that: The underwater sampling and injection device also includes an angle adjustment unit, which is connected to the fixed plate to drive the fixed plate to rotate, and then drives the driving unit, sealing cylinder, piston and bidirectional injection head to rotate together.

5. The underwater sampling and injection device according to claim 4, characterized in that: The angle adjustment unit includes a servo fixing part, a second servo, a carrying fixing part, and a fixing block. The second servo is fixed on the servo fixing part. One side of the fixing block is rotatably connected to the carrying fixing part. The output shaft of the second servo is connected to the other side of the fixing block. The fixing block is fixed to one end of the fixing plate.

6. The underwater sampling and injection device according to claim 5, characterized in that: The angle adjustment assembly also includes a swing arm plate, which is fixed to the other side of the fixed block. The central gear hole of the swing arm plate is fully matched with the gear on the output shaft of the second servo and then locked and fixed.

7. The underwater sampling and injection device according to claim 6, characterized in that: The angle adjustment component also includes a cylindrical pin, one end of which is inserted into one side of the fixing block, and the other end of the cylindrical pin is rotatably connected to the mounting fixing piece.

8. The underwater sampling and injection device according to claim 1, characterized in that: The sealing cylinder includes a sealing cylinder fixing part, a hollow tube, an outer cylinder, a front end rubber pad and a rear end rubber pad. The two-way injection head is placed at the front end opening of the hollow tube after pressing the front end rubber pad. The outer cylinder is sleeved on the outside of the hollow tube, and the front end of the outer cylinder covers the interface between the two-way injection head and the hollow tube. The rear end of the hollow tube is pressed against the rear end rubber pad and inserted into the groove of the sealing cylinder fixing part. The piston moves back and forth along the hollow tube, and the front end seal of the push rod passes through the center hole of the sealing cylinder fixing part and is connected to one end of the piston.

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