Adjustable injector for water quality detection

Abstract

The utility model discloses an adjustable syringe for water quality detection, which relates to the technical field of water quality detection and comprises a syringe, a needle tube, a positioning tube and a push-pull component, the needle tube is fixedly connected to the middle side of the lower end of the syringe, and the bottom of the positioning tube is fixedly connected to the middle side of the upper end of the syringe. The lower end of the outer wall of the push-pull assembly penetrates into the syringe through a positioning pipe, and a position adjusting assembly is arranged on the outer wall of the syringe. According to the utility model, the upward threaded rod is pulled to draw a water sample collected in a container into the injection cylinder by the needle tube, and then the threaded sleeve is rotationally moved to a numerical value on the corresponding scale line on the threaded rod through the scale line according to the measurement required by water sample detection, so that the injection dosage is adjusted, and the water sample is detected by rotating the lead screw. And the distance between the grab handle and the pressing disc is adjusted, so that the device is suitable for pressing the hand of a user.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality detection, in particular to an adjustable syringe for water quality detection. Background Art

[0002] With the development of social economy, scientific progress and the improvement of people's living standards, people's requirements for the quality of drinking water are constantly increasing, and drinking water quality standards are also constantly developing and improving accordingly. In the process of water quality testing, testers usually use syringes to extract water samples collected from containers for testing. The existing technology has the following problems:

[0003] When using existing syringes, it is not convenient to adjust the detection volume after the syringe draws the water sample. The injection depth can only be controlled by the naked eye and experience, which is difficult to grasp. Secondly, when injecting, the user needs to use his fingers to hook the handle and then use the thumb to push the pressing plate to push. However, since the palms of users are of different sizes, the distance between the fixed handle and the pressing plate is difficult for medical staff with smaller hands to use. Utility Model Content

[0004] The utility model provides an adjustable syringe for water quality detection, so as to solve the problems existing in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] An adjustable syringe for water quality testing includes a syringe, a needle tube, a positioning tube and a push-pull assembly. The needle tube is fixedly connected to the middle side of the lower end of the syringe, the bottom of the positioning tube is fixedly connected to the middle side of the upper end of the syringe, the lower end of the outer wall of the push-pull assembly passes through the positioning tube to the interior of the syringe, and the outer wall of the syringe is provided with a position adjustment assembly.

[0007] A further improvement of the technical solution of the present utility model is that: the push-pull assembly includes a threaded rod, a scale line, a pressing plate, a connecting plate, a piston and a threaded sleeve, a groove is provided on one side of the outer wall of the threaded rod, the scale line is arranged on the front side of the groove, the top end of the threaded rod is fixedly connected to the lower end of the pressing plate, the lower end of the outer wall of the threaded rod passes through the interior of the injection barrel through a positioning tube and is fixedly connected to the top middle side of the connecting plate, the inner wall of the piston is fixedly connected to the lower side of the outer wall of the connecting plate, the inner wall of the threaded sleeve is threadedly connected to the outer wall of the threaded rod, and the outer wall of the threaded sleeve is provided with upper and lower through-going slots on both sides.

[0008] A further improvement of the technical solution of the present utility model is that the outer wall of the piston overlaps the inner wall of the injection cylinder.

[0009] A further improvement of the technical solution of the present invention is that: a plurality of semicircular grooves are provided in a circular array on the outer wall of the connecting disk close to the upper side of the piston, and balls are provided on the inner walls of the plurality of semicircular grooves.

[0010] A further improvement of the technical solution of the present utility model is that the outer surfaces of a plurality of the balls overlap with the inner wall of the injection barrel.

[0011] A further improvement of the technical solution of the present utility model is that: the position adjustment assembly includes a collar, a positioning collar, a connecting block, a positioning block, a screw, a knob, a bearing and two handles, one end of the connecting block is fixedly connected to the rear side of the outer wall of the collar, one end of the positioning block is fixedly connected to the rear side of the outer wall of the positioning collar, the lower end of the outer wall of the screw passes through the upper and lower ends of the middle part of the connecting block and is threadedly connected, the upper end of the screw is fixedly connected to the bottom of the knob, the outer wall of the lower end of the screw is rotatably connected to the top of the bearing, the bottom of the bearing is fixedly connected to the upper end of the positioning block, and the opposite surfaces of the two handles are respectively fixedly connected to the left and right ends of the outer wall of the collar.

[0012] A further improvement of the technical solution of the present invention is that the inner wall of the collar is sleeved with the outer wall of the syringe, the inner wall of the positioning collar is fixedly connected to the lower side of the outer wall of the syringe, and the left and right ends of the outer wall of the syringe near the upper side of the positioning collar are respectively fixedly connected with limiting protrusions.

[0013] A further improvement of the technical solution of the present invention is that: a sliding groove which passes through from top to bottom is respectively opened at the left and right ends of the inner wall of the collar, and the outer wall of the limiting protrusion is slidably connected to the inner wall of the sliding groove.

[0014] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0015] 1. The utility model provides an adjustable syringe for water quality testing, which adopts the cooperation between a syringe barrel, a needle tube, a positioning tube and a push-pull assembly. The needle tube draws the water sample collected in the container into the syringe barrel by pulling the upward threaded rod, and then the threaded sleeve is rotated on the threaded rod and moved to the value on the corresponding scale line according to the measurement required for the water sample test, so as to adjust the injection dose. This solves the problem that the existing syringes are inconvenient to adjust the test capacity after the syringe draws the water sample, and the injection depth can only be controlled by naked eyes and experience, which is difficult to grasp. The utility model achieves the beneficial effect of facilitating the adjustment of the injection dose.

[0016] 2. The utility model provides an adjustable syringe for water quality testing, which adopts the cooperation between the injection barrel and the position adjustment component. By rotating the screw, the driving ring is driven to slide along the injection barrel, and the distance between the handle and the pressing plate is adjusted to be suitable for the pressing of the user's hand. This solves the problem that when the user injects, the user needs to use his fingers to hook the handle and then use the thumb to push the pressing plate for pushing. However, due to the different sizes of users' palms, the distance between the fixed handle and the pressing plate is difficult to use for medical staff with smaller palms. This achieves the beneficial effect of facilitating the adjustment of the position between the handle and the pressing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a new adjustable syringe for water quality testing in this application;

[0018] Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the adjustable syringe of the present invention;

[0019] Figure 3 It is a partially enlarged schematic diagram of the three-dimensional structure A of the present utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the position adjustment component of the utility model;

[0021] Figure 5 It is a partially enlarged schematic diagram of the B three-dimensional structure of the present invention.

[0022] In the figure: 1. syringe; 11. limiting protrusion; 2. needle tube; 3. positioning tube; 4. push-pull assembly; 41. threaded rod; 410. groove; 42. scale line; 43. pressing plate; 44. connecting plate; 440. semicircular groove; 441. ball; 45. piston; 46. threaded sleeve; 460. slot; 5. position adjustment assembly; 51. collar; 510. slide groove; 52. positioning collar; 53. connecting block; 54. positioning block; 55. screw; 56. knob; 57. bearing; 58. handle. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods:

[0024] like Figure 1As shown, the utility model provides an adjustable syringe for water quality testing, comprising a syringe 1, a needle tube 2, a positioning tube 3 and a push-pull assembly 4. The needle tube 2 is fixedly connected to the middle side of the lower end of the syringe 1, and the bottom of the positioning tube 3 is fixedly connected to the middle side of the upper end of the syringe 1. The lower end of the outer wall of the push-pull assembly 4 passes through the positioning tube 3 to the interior of the syringe 1, and the outer wall of the syringe 1 is provided with a position adjustment assembly 5;

[0025] A push-pull component 4 and a position adjustment component 5 are provided. By operating the push-pull component 4, the dose of the injected water sample can be adjusted. At the same time, with the use of the position adjustment component 5, the distance between the index finger and the thumb can be adjusted according to the size of the user's palm, which is convenient for the user's operation.

[0026] like Figure 2 As shown, the utility model provides a technical solution for an adjustable syringe for water quality testing: the push-pull assembly 4 includes a threaded rod 41, a scale line 42, a pressing plate 43, a connecting plate 44, a piston 45 and a threaded sleeve 46. A groove 410 is opened on one side of the outer wall of the threaded rod 41, and the scale line 42 is arranged on the front of the groove 410. The top end of the threaded rod 41 is fixedly connected to the lower end of the pressing plate 43. The lower end of the outer wall of the threaded rod 41 passes through the positioning tube 3 to the interior of the injection barrel 1 and is fixedly connected to the top middle side of the connecting plate 44. The inner wall of the plug 45 is fixedly connected to the lower side of the outer wall of the connecting plate 44, the inner wall of the threaded sleeve 46 is threadedly connected to the outer wall of the threaded rod 41, and the threaded sleeve 46 is set on the threaded rod 41. The distance between the scale line 42 and the threaded sleeve 46 is adjusted by rotation to control the amount of injection. The outer wall of the threaded sleeve 46 is respectively provided with a vertical through-groove 460 on both sides. The threaded sleeve 46 is provided with a groove 460 to facilitate the rotation operation of the threaded sleeve 46. The outer wall of the piston 45 overlaps the inner wall of the injection barrel 1.

[0027] like Figure 3 As shown, the utility model provides a technical solution for an adjustable syringe for water quality testing: a plurality of semicircular grooves 440 are provided in a circular array on the outer wall of the connecting disk 44 near the upper side of the piston 45, and the inner walls of the plurality of semicircular grooves 440 are provided with balls 441. The outer surfaces of the plurality of balls 441 overlap with the inner wall of the injection barrel 1, and a plurality of balls 441 are provided on the outer wall of the connecting disk 44. During the pressing or pulling process, the balls 441 are driven to roll along the inner wall of the injection barrel 1, thereby improving the smoothness of the movement of the piston 45.

[0028] like Figure 4-5As shown, the utility model provides a technical solution for an adjustable syringe for water quality testing: the position adjustment component 5 includes a collar 51, a positioning collar 52, a connecting block 53, a positioning block 54, a screw 55, a knob 56, a bearing 57 and two handles 58. One end of the connecting block 53 is fixedly connected to the rear side of the outer wall of the collar 51, one end of the positioning block 54 is fixedly connected to the rear side of the outer wall of the positioning collar 52, the lower end of the outer wall of the screw 55 passes through the upper and lower ends of the middle part of the connecting block 53 and is threadedly connected therebetween, the upper end of the screw 55 is fixedly connected to the bottom of the knob 56, the outer wall of the lower end of the screw 55 is rotatably connected to the top of the bearing 57, the bottom of the bearing 57 is fixedly connected to the upper end of the positioning block 54, and the two handles 58 are fixedly connected to the upper end of the positioning block 54. The opposite surfaces are respectively fixedly connected to the left and right ends of the outer wall of the collar 51. By rotating the lead screw 55, the collar 51 is displaced along the outer wall of the syringe 1, so that the distance between the handle 58 and the pressing plate 43, the inner wall of the collar 51 is sleeved with the outer wall of the syringe 1, and the inner wall of the positioning collar 52 is fixedly connected to the lower side of the outer wall of the syringe 1. The left and right ends of the outer wall of the syringe 1 near the upper side of the positioning collar 52 are respectively fixedly connected to the limiting protrusion 11, and the left and right ends of the inner wall of the collar 51 are respectively provided with a sliding groove 510 that passes through from top to bottom. The outer wall of the limiting protrusion 11 is slidably connected to the inner wall of the sliding groove 510, and the limiting protrusion 11 slides along the sliding groove 510, which plays a role in limiting the moving trajectory of the collar 51.

[0029] The following is a detailed description of the working principle of this adjustable syringe for water quality testing.

[0030] like Figure 1-5 As shown, in the water quality test, when using the syringe to extract the water sample collected in the container for testing, the needle tube 2 is inserted into the container containing the water sample, and the user pulls the threaded rod 41 upward by pressing the plate 43, so that the connecting plate 44 drives the piston 45 to move upward along the syringe 1, so that the water sample is drawn into the syringe 1 through the needle tube 2, and then the user turns the knob 56 to drive the lead screw 55 to rotate along the inside of the connecting block 53, so that the collar 51 slides along the limit protrusion 11 through the slide groove 510, according to the size of the user's palm. The handle 58 is small, so that the user can move the handle 58 to a suitable position, so that the user's fingers can hook the handle 58 while the thumb can fit the upper end of the pressing plate 43, and then rotate the threaded sleeve 46 along the threaded rod 41, and rotate the threaded sleeve 46 to the corresponding injection value by observing the value on the scale line 42. The user presses the pressing plate 43 downward, and at the same time, the ball 441 rolls along the inner wall of the syringe 1, so that the piston 45 assists in the extrusion of the water sample, so that the water sample is quickly injected into the detection vessel through the needle tube 2 for detection.

[0031] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An adjustable syringe for water quality testing, comprising a syringe barrel (1), a needle tube (2), a positioning tube (3) and a push-pull assembly (4), characterized in that: The needle tube (2) is fixedly connected to the middle side of the lower end of the syringe (1), the bottom of the positioning tube (3) is fixedly connected to the middle side of the upper end of the syringe (1), the lower end of the outer wall of the push-pull assembly (4) passes through the positioning tube (3) to the interior of the syringe (1), and the outer wall of the syringe (1) is provided with a position adjustment assembly (5).

2. The adjustable syringe for water quality testing according to claim 1, characterized in that: The push-pull assembly (4) comprises a threaded rod (41), a scale line (42), a pressing plate (43), a connecting plate (44), a piston (45) and a threaded sleeve (46). A groove (410) is provided on one side of the outer wall of the threaded rod (41). The scale line (42) is arranged on the front side of the groove (410). The top end of the threaded rod (41) is fixedly connected to the lower end of the pressing plate (43). The lower end of the outer wall of the threaded rod (41) passes through the interior of the injection barrel (1) through a positioning tube (3) and is fixedly connected to the top middle side of the connecting plate (44). The inner wall of the piston (45) is fixedly connected to the lower side of the outer wall of the connecting plate (44). The inner wall of the threaded sleeve (46) is threadedly connected to the outer wall of the threaded rod (41). The outer wall of the threaded sleeve (46) is respectively provided with upper and lower through-going slots (460) on both sides.

3. The adjustable syringe for water quality testing according to claim 2, characterized in that: The outer wall of the piston (45) overlaps the inner wall of the syringe (1).

4. The adjustable syringe for water quality testing according to claim 2, characterized in that: The outer wall of the connecting disk (44) is provided with a plurality of semicircular grooves (440) in a circular array near the upper side of the piston (45), and the inner walls of the plurality of semicircular grooves (440) are provided with balls (441).

5. The adjustable syringe for water quality testing according to claim 4, characterized in that: The outer surfaces of the plurality of balls (441) overlap the inner wall of the injection barrel (1).

6. The adjustable syringe for water quality testing according to claim 1, characterized in that: The position adjustment assembly (5) comprises a collar (51), a positioning collar (52), a connecting block (53), a positioning block (54), a lead screw (55), a knob (56), a bearing (57) and two handles (58), one end of the connecting block (53) is fixedly connected to the rear side of the outer wall of the collar (51), one end of the positioning block (54) is fixedly connected to the rear side of the outer wall of the positioning collar (52), the lower end of the outer wall of the lead screw (55) passes through the upper and lower ends of the middle part of the connecting block (53) and is threadedly connected therebetween, the upper end of the lead screw (55) is fixedly connected to the bottom of the knob (56), the outer wall of the lower end of the lead screw (55) is rotatably connected to the top of the bearing (57), the bottom of the bearing (57) is fixedly connected to the upper end of the positioning block (54), and the opposite surfaces of the two handles (58) are fixedly connected to the left and right ends of the outer wall of the collar (51), respectively.

7. The adjustable syringe for water quality testing according to claim 6, characterized in that: The inner wall of the collar (51) is sleeved with the outer wall of the syringe (1), the inner wall of the positioning collar (52) is fixedly connected to the lower side of the outer wall of the syringe (1), and the left and right ends of the outer wall of the syringe (1) close to the upper side of the positioning collar (52) are respectively fixedly connected to limiting protrusions (11).

8. The adjustable syringe for water quality testing according to claim 7, characterized in that: The left and right ends of the inner wall of the collar (51) are respectively provided with sliding grooves (510) that pass through the upper and lower parts, and the outer wall of the limiting protrusion (11) is slidably connected to the inner wall of the sliding groove (510).

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