A blood collection needle detection device with screening function

Abstract

The present invention discloses a blood collection needle detection device with screening function, and relates to the field of blood collection needle detection technology. It includes a detection shell, a detection door, a qualified material box, an unqualified material box, a screening component, a reset component, an airtight detection component, a fixed guide component and an air pressure output component. The present invention fills a needle with high-pressure gas within a fixed time for a closed test, and converts the air pressure change into the sliding of a slide, and the slide drives the limit column to move, so that the fixed guide is separated from the first airtight shell and the second airtight shell, so that the needle with qualified airtightness automatically falls to the qualified material box, and at the same time, the gas will seep out from the unqualified needle and flow out from the exhaust port, and the screener cannot be triggered, so that the unqualified needle is still located in the airtight detection component, thereby achieving the purpose of automatic screening of the needle. The fixed guide is separated from the first airtight shell and the second airtight shell by using a reset slide, so that the needle with unqualified airtightness passively falls to the unqualified material box.

Description

Technical Field

[0001] The invention relates to the technical field of blood collection needle detection, in particular to a blood collection needle detection device with a screening function. Background Art

[0002] As an important tool in the medical and scientific research fields, lancets are mainly used for collecting blood samples. There are many types of lancets, suitable for different blood collection sites and needs, and have broad application prospects. Although there are many types of lancets, the most important component is the lancet needle, which can relieve the patient's pain and reduce the risk of needlestick injuries. In order to ensure the integrity and safety of blood samples and ensure that the lancet does not leak during use, people often need to perform airtightness tests on the lancet needle.

[0003] At present, conventional blood collection needle air tightness testing equipment on the market can often only test a single needle, and needs to be manually placed up and down. This method is not only inefficient, but also labor-intensive. Even if there are some devices that can perform batch testing, these devices do not have the function of screening unqualified needles. Summary of the invention

[0004] The object of the present invention is to provide a blood collection needle detection device with a screening function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a blood collection needle detection device with a screening function, comprising a detection shell, a qualified material box and an unqualified material box are arranged at the bottom of the detection shell, a detection door is arranged on the detection shell, a screening component is installed in the detection shell, a pneumatic output component is installed in the detection shell, a reset component is installed in the detection shell, an airtight detection component is installed in the detection shell, a fixed guide component is installed in the detection shell, the airtight detection component is embedded with the fixed guide component, the fixed guide component is slidably connected with the reset component, the airtight detection component is used to perform airtight detection on the blood collection needle, the reset component is used to reset the airtight detection component, and the fixed guide component is used to fix the airtight detection component and guide the detected blood collection needle. A control system is installed in the detection shell, and the control system is used to control the entire detection device.

[0006] The airtight detection component includes an airtight connecting plate, several first airtight outer shells and several second airtight outer shells. The first airtight outer shells and the second airtight outer shells are both equipped with outer shell connecting parts, and airtight sliding bars are symmetrically installed on the outer shell connecting parts. The airtight connecting plate is installed in the detection outer shell, and the airtight sliding bar is slidably connected to the airtight connecting plate. An airtight spring is installed between the outer shell connecting part and the airtight connecting plate. A screener is installed in the first airtight outer shell, and the first airtight outer shell and the second airtight outer shell are embedded with the fixed guide.

[0007] Before the detection, the detection equipment is in the detection state. In the detection state, the guide spring and the airtight spring are both in the stretched state, the fixed guide cylinder is sleeved on the outside of the first airtight shell and the second airtight shell, the sealing ring of the fixed guide cylinder and its inner wall tightly wraps the first airtight shell and the second airtight shell, so that the first airtight shell and the second airtight shell are tightly fitted under the action of the gripping force, the needle sealing ring in the first airtight shell and the second airtight shell tightly wraps the needle of the blood collection needle, the needle sealing ring, the inner wall of the first airtight shell and the second airtight shell and the top of the sifter form a sealed chamber, the needle tip air outlet of the needle is located in the closed chamber, the fixed guide cylinder is fixed to the first airtight shell and the second airtight shell by a constraint rod, one end of the constraint rod is engaged with the airtight holes on the first airtight shell and the second airtight shell, so that the fixed guide cylinder cannot slide up and down along the first airtight shell and the second airtight shell; the sliding cylinder makes the herringbone guide plate located on one side of the feeding hole through the output shaft, so that when the qualified products fall from the feeding hole, they are just introduced into the qualified material box along one side of the herringbone guide plate.

[0008] The first airtight shell and the second airtight shell are both provided with a plurality of exhaust ports, the first airtight shell and the second airtight shell are provided with needle sealing rings, and a sealed chamber is formed between the first airtight shell, the second airtight shell and the sifter. A sealing gasket is provided at the joint of the first airtight shell and the second airtight shell.

[0009] The screener includes a screening shell, which is installed in the first airtight shell, a sliding plate is slidably installed in the screening shell, a connecting column is installed at the bottom of the sliding plate, an extrusion head is installed at the bottom of the connecting column, a sliding block is symmetrically and slidably installed at the bottom of the screening shell, a limiting column is installed on one side of the sliding block, a screening spring is installed between the sliding block and the screening shell, a screening hole is provided at the bottom of the screening shell, the limiting column can slide freely in the screening hole, and the first airtight shell and the second airtight shell are provided with airtight holes at the positions corresponding to the screening holes. The sliding plate slides and is sealedly connected to the inner wall of the screening shell.

[0010] If the blood collection needle has good sealing performance, the air cylinder in the sealing chamber continues to rise, so that the slide continuously slides downward under the action of pressure, and the slide drives the extrusion head to slide down through the connecting column. The inclined surface of the extrusion head squeezes the inclined surface of the sliding block, so that the sliding block overcomes the elastic force of the screening spring and slides. The sliding block drives the limit column to slide continuously to both sides, and the limit column extends into the airtight hole and continuously pushes the constraint rod to slide until the constraint rod completely slides out of the airtight hole. At this time, the fixed guide cylinder loses the constraint of the constraint rod and can slide up and down along the first airtight shell and the second airtight shell. Under the elastic force of the guide spring, the fixed guide gradually slides down until it is disconnected from the first airtight shell and the second airtight shell. At this time, the first airtight shell and the second airtight shell are quickly separated under the pulling force of the airtight springs on both sides. The needle with good airtightness falls from the pneumatic conveying head, falls into the discharge hole along the retracted inner wall of the fixed guide cylinder, and then falls into the qualified material box from the discharge hole along one side of the herringbone guide plate, until the screener is triggered within the preset time, so as to achieve the purpose of screening the qualified needles and falling into the qualified material box.

[0011] The fixed guide assembly includes a fixed guide and a guide base. The fixed guide is engaged with the first airtight shell and the second airtight shell. A guide spring is installed between the fixed guide and the guide base. A guide block is installed on the guide base. The fixed guide is slidably connected to the guide base. The fixed guide is slidably connected to the reset assembly. A feed hole is provided on the guide base which runs through the guide base from top to bottom. The guide base is connected to the detection shell.

[0012] The fixed guide includes a fixed guide cylinder, a sliding spring and a constraint rod. The fixed guide cylinder is symmetrically provided with side sliders. The fixed guide cylinder is slidably connected to the guide block through the side sliders. Spring connecting plates are symmetrically installed on both sides of the fixed guide cylinder. One end of the sliding spring is connected to the spring connecting plate, and the other end of the sliding spring is connected to the constraint rod. The constraint rod passes through the spring connecting plate and the fixed guide cylinder respectively. A sliding plate is installed at one end of the constraint rod, and the sliding plate is slidably connected to the reset assembly. The other end of the constraint rod is embedded in the airtight holes on the first airtight shell and the second airtight shell. A sealing ring is provided on the inner wall of the fixed guide cylinder.

[0013] The reset assembly includes a first reset cylinder, a second reset cylinder and an electric telescopic rod, the first reset cylinder is installed in the detection housing, a reset push plate is installed on the output shaft of the first reset cylinder, and a card slot matching the shape of the first airtight housing and the second airtight housing is provided on the reset push plate, the second reset cylinder is installed in the detection housing, a reset slide plate is installed on the output shaft of the second reset cylinder, a slide groove is provided on the reset slide plate, and the reset slide plate is slidably connected with the sliding plate through the slide groove, the electric telescopic rod is installed in the detection housing, and a reset push rod is installed on the output shaft of the electric telescopic rod. In the detection state, the sliding plate can slide up and down and forward and backward in the slide groove of the reset plate.

[0014] For needles with unqualified air tightness, as high-pressure gas is filled, gas will seep out of the needle and flow out from the exhaust port. At this time, within the preset time, the air pressure in the closed chamber cannot support the slide to continue to slide down, and the screener cannot be triggered, so that the unqualified needle is still in the air tightness detection component. The control system turns on the sliding cylinder, and the sliding cylinder drives the herringbone guide plate to slide through the sliding side plate, so that the herringbone guide plate is located on the other side of the feeding hole. When the unqualified product falls from the feeding hole, it is just guided into the unqualified material box along the other side of the herringbone guide plate.

[0015] The control system starts the second reset cylinder, the second reset cylinder contracts, and the second reset cylinder drives the reset slides on both sides to move away from each other. The reset slide pulls the constraint rod through the sliding plate, and the constraint rod overcomes the elastic force of the sliding spring and leaves the airtight hole, eventually separating the first airtight shell and the second airtight shell on both sides of the unqualified needle. The unqualified needle falls into the discharge hole along the inner wall of the fixed guide cylinder, and then falls into the unqualified material box from the discharge hole along the other side of the herringbone guide plate, so as to achieve the purpose of screening the unqualified needles and falling into the qualified material box.

[0016] After the detection and screening is completed, the constraint rod is still in an outward stretching state under the pulling force of the reset slide. The control system starts the first reset cylinder, and the output shaft of the first reset cylinder drives the reset push plate to move closer to the middle. The card slot on the reset push plate is embedded with the first airtight shell and the second airtight shell, and drives the first airtight shell and the second airtight shell to fit tightly. Then, the electric telescopic rod is turned on, and the output shaft of the electric telescopic rod shrinks, thereby driving the reset push rod to move upward. At this time, the reset push rod just enters the slide groove on the reset slide. The reset push rod pushes the sliding plate in the slide groove to slide the sliding plate upward. The sliding plate drives the fixed guide cylinder to slide upward through the constraint rod until one end of the constraint rod is aligned with the airtight hole. After that, the reset push rod is controlled to reset, and then the reset slides are controlled to reset close to each other. Under the action of the sliding spring, the constraint rod gradually extends into the airtight hole as the reset slide slides. Thereby, the entire detection equipment is reset, and the detection equipment enters the detection state again, which is convenient for the next group of detection.

[0017] The screening component includes a sliding side plate and a sliding cylinder. The sliding side plate is slidingly connected to the detection shell. A herringbone guide plate is installed between the sliding side plates. The herringbone guide plate is in a herringbone shape. The sliding cylinder is installed in the detection shell. The output shaft of the sliding cylinder is connected to the sliding side plate. The pneumatic output component includes an output cylinder. The output cylinder is installed in the detection shell. An air delivery column is installed on the output shaft of the output cylinder. Several air pressure delivery heads are installed at the bottom of the air delivery column. The air delivery column is connected to the inside of the air pressure delivery head, and an air pump is externally connected to the air delivery column.

[0018] Open the detection door and insert the blood collection needle into the airtight detection component. The control system starts the output cylinder, and the output cylinder drives the air pressure delivery head at the bottom of the air delivery column to descend until the air pressure delivery head and the needle are tightly fitted. After that, the control system starts the air pump, and the air pump continuously delivers high-pressure gas to the air delivery column within a preset time. The gas in the air delivery column evenly enters each air pressure delivery head, and the air pressure delivery head continuously inputs high-pressure gas into the needle to be tested. The gas flows from the needle tip outlet to the sealed chamber, causing the air pressure in the sealed chamber to continue to increase.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention fills the needle with high-pressure gas within a fixed time to perform a sealing test, and converts the air pressure change into the sliding of the slide, and uses the slide to drive the limit column to move, so that the fixed guide is separated from the first airtight shell and the second airtight shell, so that the needle with qualified airtightness automatically falls into the qualified material box. At the same time, the gas will seep out of the unqualified needle and flow out from the exhaust port, and the screener cannot be triggered, so that the unqualified needle is still located in the airtight detection component, thereby achieving the purpose of automatic screening of the needle.

[0021] 2. Use the air pressure output component to deliver high-pressure gas to multiple needles at the same time. By inputting high-pressure gas to the needles within a fixed time, it can be determined whether the air tightness of the needles is qualified based on the triggering status of the screener.

[0022] 3. Use the reset slide to separate the fixed guide from the first airtight shell and the second airtight shell, so that the needles with unqualified airtightness passively fall into the unqualified material box, so as to achieve the purpose of automatic screening and unloading of unqualified needles.

[0023] 4. Use the reset component to quickly reset the device after detection, so that the detection device can enter the detection state again to achieve the purpose of reciprocating detection; use the fixed guide component to fix the first airtight shell and the second airtight shell, which ensures the airtightness of the first airtight shell and the second airtight shell when they are close together, and can also guide the needle.

[0024] 5. By switching the falling path of the needle through the screening component, unqualified needles can be placed in the unqualified material box and qualified needles can be placed in the qualified material box according to the results of the needle air tightness test. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall elevation view of the detection device of the present invention;

[0026] Figure 2 It is an elevation view of the internal structure of the detection device of the present invention;

[0027] Figure 3 It is an elevation view of the reset assembly and the screening assembly of the present invention;

[0028] Figure 4 It is an elevation view of the airtight detection assembly and the fixed guide assembly of the present invention;

[0029] Figure 5 is a cross-sectional elevation view of a first airtight housing of the present invention;

[0030] Figure 6 is a cross-sectional elevation view of the sifter of the present invention;

[0031] Figure 7 is a cross-sectional elevation view of a fixed guide of the present invention;

[0032] Figure 8 For the present invention Figure 4 A partial enlarged view of area A.

[0033] In the figure: 1. detection shell; 2. detection door; 3. qualified material box; 4. unqualified material box; 5. screening component; 6. reset component; 7. airtight detection component; 8. fixed guide component; 9. air pressure output component; 71. first airtight shell; 72. second airtight shell; 73. airtight connecting plate; 74. shell connecting piece; 75. airtight slide bar; 76. airtight spring; 77. sifter; 711. exhaust port; 712. needle seal ring; 713. sealing chamber; 771. screening shell; 772. slide; 773. connecting column; 774. extrusion head; 775. sliding block; 776. screening Spring; 777, limit column; 81, fixed guide; 82, guide spring; 83, guide base; 84, guide block; 831, feed hole; 51, sliding side plate; 52, sliding cylinder; 53, herringbone guide plate; 61, reset push plate; 62, first reset cylinder; 63, reset push rod; 64, electric telescopic rod; 65, second reset cylinder; 66, reset slide plate; 91, output cylinder; 92, air delivery column; 93, pneumatic delivery head; 811, fixed guide cylinder; 812, side slide block; 813, spring connecting plate; 814, sliding spring; 815, restraint rod; 816, sliding plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-8As shown, the present invention provides a technical solution for a blood collection needle detection device with a screening function: comprising a detection housing 1, a qualified material box 3 and an unqualified material box 4 are provided at the bottom of the detection housing 1, a detection door 2 is provided on the detection housing 1, a screening component 5 is installed in the detection housing 1, a pneumatic output component 9 is installed in the detection housing 1, a reset component 6 is installed in the detection housing 1, an airtight detection component 7 is installed in the detection housing 1, a fixed guide component 8 is installed in the detection housing 1, the airtight detection component 7 is engaged with the fixed guide component 8, the fixed guide component 8 is slidably connected with the reset component 6, the airtight detection component 7 is used to perform airtight detection on the blood collection needle, the reset component 6 is used to reset the airtight detection component 7, and the fixed guide component 8 is used to fix the airtight detection component 7 and guide the detected blood collection needle. A control system is installed in the detection housing 1, and the control system is used to control the entire detection device.

[0036] The screening component 5 includes a sliding side plate 51 and a sliding cylinder 52. The sliding side plate 51 is slidably connected to the detection shell 1. A herringbone guide plate 53 is installed between the sliding side plates 51. The herringbone guide plate 53 is in a herringbone shape. The sliding cylinder 52 is installed in the detection shell 1, and the output shaft of the sliding cylinder 52 is connected to the sliding side plate 51; the pneumatic output component 9 includes an output cylinder 91, which is installed in the detection shell 1. An air delivery column 92 is installed on the output shaft of the output cylinder 91. A plurality of air pressure delivery heads 93 are installed at the bottom of the air delivery column 92. The air delivery column 92 is connected to the inside of the air pressure delivery head 93, and the air delivery column 92 is externally connected to an air pump.

[0037] The airtight detection component 7 includes an airtight connecting plate 73, a plurality of first airtight shells 71 and a plurality of second airtight shells 72. Shell connectors 74 are installed on the first airtight shells 71 and the second airtight shells 72. Airtight slide bars 75 are symmetrically installed on the shell connectors 74. The airtight connecting plate 73 is installed in the detection shell 1. The airtight slide bars 75 are slidingly connected to the airtight connecting plate 73. An airtight spring 76 is installed between the shell connector 74 and the airtight connecting plate 73. A sifter 77 is installed in the first airtight shell 71. The first airtight shell 71 and the second airtight shell 72 are engaged with the fixed guide 81.

[0038] Before the test, the testing device is in a testing state. In the testing state, the guide spring 82 and the airtight spring 76 are both in an extended state. The fixed guide cylinder 811 is sleeved on the outside of the first airtight shell 71 and the second airtight shell 72. The fixed guide cylinder 811 and the sealing ring of its inner wall tightly wrap the first airtight shell 71 and the second airtight shell 72, so that the first airtight shell 71 and the second airtight shell 72 are tightly fitted under the action of the gripping force. The needle sealing ring 712 in the first airtight shell 71 and the second airtight shell 72 tightly wraps the blood collection needle needle. The needle sealing ring 712, the first airtight shell 71 and the second airtight shell 72 The wall and the top of the screener 77 form a sealed chamber 713, and the needle tip air outlet of the needle is located in the sealed chamber. The fixed guide cylinder 811 is fixed to the first airtight shell 71 and the second airtight shell 72 through the constraint rod 815, and one end of the constraint rod 815 is engaged with the airtight holes on the first airtight shell 71 and the second airtight shell 72, so that the fixed guide cylinder 811 cannot slide up and down along the first airtight shell 71 and the second airtight shell 72; the sliding cylinder 52 causes the herringbone guide plate 53 to be located on one side of the discharge hole 831 through the output shaft, so that when the qualified product falls from the discharge hole 831, it is just introduced into the qualified material box 3 along one side of the herringbone guide plate 53.

[0039] The first airtight housing 71 and the second airtight housing 72 are both provided with a plurality of exhaust ports 711, the first airtight housing 71 and the second airtight housing 72 are provided with needle seal rings 712, and a sealed chamber 713 is formed between the first airtight housing 71, the second airtight housing 72 and the sifter 77. A sealing gasket is provided at the joint between the first airtight housing 71 and the second airtight housing 72.

[0040] The screener 77 includes a screening housing 771, which is installed in the first airtight housing 71, a slide 772 is slidably installed in the screening housing 771, a connecting column 773 is installed at the bottom of the slide 772, an extrusion head 774 is installed at the bottom of the connecting column 773, a sliding block 775 is symmetrically and slidably installed at the bottom of the screening housing 771, a limiting column 777 is installed on one side of the sliding block 775, a screening spring 776 is installed between the sliding block 775 and the screening housing 771, a screening hole is provided at the bottom of the screening housing 771, the limiting column 777 can slide freely in the screening hole, and airtight holes are provided at the positions of the first airtight housing 71 and the second airtight housing 72 corresponding to the screening hole. The slide 772 slides and is sealedly connected to the inner wall of the screening housing 771.

[0041] The fixed guide assembly 8 includes a fixed guide 81 and a guide base 83. The fixed guide 81 is engaged with the first airtight shell 71 and the second airtight shell 72. A guide spring 82 is installed between the fixed guide 81 and the guide base 83. A guide block 84 is installed on the guide base 83. The fixed guide 81 is slidably connected to the guide base 83. The fixed guide 81 is slidably connected to the reset assembly 6. A feed hole 831 is provided on the guide base 83 which runs through the upper and lower parts. The guide base 83 is connected to the detection shell 1.

[0042] The fixed guide 81 includes a fixed guide cylinder 811, a sliding spring 814 and a constraint rod 815. The fixed guide cylinder 811 is symmetrically provided with side sliders 812. The fixed guide cylinder 811 is slidably connected to the guide block 84 through the side sliders 812. Spring connecting plates 813 are symmetrically installed on both sides of the fixed guide cylinder 811. One end of the sliding spring 814 is connected to the spring connecting plate 813, and the other end of the sliding spring 814 is connected to the constraint rod 815. The constraint rod 815 passes through the spring connecting plate 813 and the fixed guide cylinder 811 respectively. A sliding plate 816 is installed at one end of the constraint rod 815. The sliding plate 816 is slidably connected to the reset assembly 6. The other end of the constraint rod 815 is embedded in the airtight holes on the first airtight shell 71 and the second airtight shell 72. A sealing ring is provided on the inner wall of the fixed guide cylinder 811.

[0043] The reset assembly 6 includes a first reset cylinder 62, a second reset cylinder 65 and an electric telescopic rod 64. The first reset cylinder 62 is installed in the detection housing 1. A reset push plate 61 is installed on the output shaft of the first reset cylinder 62. The reset push plate 61 is provided with a slot matching the shape of the first airtight housing 71 and the second airtight housing 72. The second reset cylinder 65 is installed in the detection housing 1. A reset slide plate 66 is installed on the output shaft of the second reset cylinder 65. The reset slide plate 66 is provided with a slide groove. The reset slide plate 66 is slidably connected to the sliding plate 816 through the slide groove. The electric telescopic rod 64 is installed in the detection housing 1. A reset push rod 63 is installed on the output shaft of the electric telescopic rod 64. In the detection state, the sliding plate 816 can slide up and down and forward and backward in the slide groove of the reset plate.

[0044] The working principle of the present invention is as follows: open the detection door 2, insert the blood collection needle into the airtight detection component 7, and the control system starts the output cylinder 91. The output cylinder 91 drives the air pressure delivery head 93 at the bottom of the air delivery column 92 to descend until the air pressure delivery head 93 is tightly fitted with the needle. After that, the control system starts the air pump, and the air pump continuously delivers high-pressure gas to the air delivery column 92 within a preset time. The gas in the air delivery column 92 evenly enters each air pressure delivery head 93. The air pressure delivery head 93 continuously inputs high-pressure gas into the needle to be tested, and the gas flows from the needle tip outlet to the sealed chamber 713, so that the air pressure in the sealed chamber 713 continues to increase.

[0045] If the blood collection needle has good sealing performance, the cylinder of the sealing chamber 713 continues to rise, so that the slide 772 continues to slide downward under the action of pressure, and the slide 772 drives the extrusion head 774 to slide down through the connecting column 773. The inclined surface of the extrusion head 774 squeezes the inclined surface of the sliding block 775, so that the sliding block 775 overcomes the elastic force of the screening spring 776 and slides. The sliding block 775 drives the limiting column 777 to slide continuously to both sides. The limiting column 777 extends into the airtight hole and continuously pushes the restraining rod 815 to slide until the restraining rod 815 completely slides out of the airtight hole. At this time, the fixed guide cylinder 811 loses the restraint of the restraining rod 815 and can move along the first airtight shell 71 and the second airtight shell 71. The two airtight shells 72 slide up and down, and under the elastic force of the guide spring 82, the fixed guide 81 gradually slides down until it is disconnected from the interlocking state with the first airtight shell 71 and the second airtight shell 72. At this time, the first airtight shell 71 and the second airtight shell 72 are quickly separated under the pulling force of the airtight springs 76 on both sides, and the needle with good airtightness falls from the pneumatic delivery head 93, falls into the discharge hole 831 along the inner wall of the retracted fixed guide cylinder 811, and then falls into the qualified material box 3 from the discharge hole 831 along the side of the herringbone guide plate 53, and triggers the sifter 77 within the preset time, so as to achieve the purpose of screening the qualified needles and falling into the qualified material box 3.

[0046] For a needle with unqualified air tightness, as high-pressure gas is filled, gas will seep out of the needle and flow out from the exhaust port 711. At this time, within the preset time, the air pressure in the closed chamber cannot support the sliding plate 772 to continue to slide down, and the sifter 77 cannot be triggered, so that the unqualified needle is still located in the airtight detection component 7. The control system turns on the sliding cylinder 52, and the sliding cylinder 52 drives the herringbone guide plate 53 to slide through the sliding side plate 51, so that the herringbone guide plate 53 is located on the other side of the discharge hole 831. When the unqualified product falls from the discharge hole 831, it is just introduced into the unqualified material box 4 along the other side of the herringbone guide plate 53.

[0047] The control system turns on the second reset cylinder 65, and the second reset cylinder 65 contracts. The second reset cylinder 65 drives the reset slides 66 on both sides to move away from each other. The reset slide 66 pulls the constraint rod 815 through the sliding plate 816. The constraint rod 815 overcomes the elastic force of the sliding spring 814 and leaves the airtight hole, and finally separates the first airtight shell 71 and the second airtight shell 72 located on both sides of the unqualified needle. The unqualified needle falls into the discharge hole 831 along the inner wall of the fixed guide cylinder 811, and then falls into the unqualified material box 4 from the discharge hole 831 along the other side of the herringbone guide plate 53, so as to achieve the purpose of screening the unqualified needles and falling into the qualified material box 3.

[0048] After the detection and screening is completed, the restraint rod 815 is still in an outwardly stretched state under the pulling force of the reset slide plate 66, and the control system starts the first reset cylinder 62. The output shaft of the first reset cylinder 62 drives the reset push plate 61 to move toward the middle, and the card slot on the reset push plate 61 is engaged with the first airtight shell 71 and the second airtight shell 72, and drives the first airtight shell 71 and the second airtight shell 72 to fit closely. After that, the electric telescopic rod 64 is turned on, and the output shaft of the electric telescopic rod 64 contracts, thereby driving the reset push rod 63 to move upward. At this time, the reset push rod 63 just enters the slide groove on the reset slide plate 66, and the reset push rod 63 pushes the sliding plate 816 in the slide groove, so that the sliding plate 816 slides upward, and the sliding plate 816 drives the fixed guide cylinder 811 to slide upward through the constraint rod 815 until one end of the constraint rod 815 is aligned with the airtight hole, and then the reset push rod 63 is controlled to reset, and then the reset slide plate 66 is controlled to reset close to each other, and the constraint rod 815 gradually extends into the airtight hole as the reset slide plate 66 slides under the action of the sliding spring 814. Thereby, the entire detection device is reset, and the detection device enters the detection state again, which is convenient for the next group of detection.

[0049] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A blood collection needle detection device with screening function, characterized in that: The detection device comprises a detection housing (1), a qualified material box (3) and an unqualified material box (4) are provided at the bottom of the detection housing (1), a detection door (2) is provided on the detection housing (1), a screening component (5) is installed in the detection housing (1), a pneumatic output component (9) is installed in the detection housing (1), a reset component (6) is installed in the detection housing (1), an airtight detection component (7) is installed in the detection housing (1), a fixed guide component (8) is installed in the detection housing (1), the airtight detection component (7) is engaged with the fixed guide component (8), the fixed guide component (8) is slidably connected with the reset component (6), the airtight detection component (7) is used to perform airtight detection on the blood collection needle tip, the reset component (6) is used to reset the airtight detection component (7), and the fixed guide component (8) is used to fix the airtight detection component (7) and guide the detected blood collection needle tip; The airtight detection assembly (7) comprises a plurality of first airtight housings (71), an airtight connecting plate (73) and a plurality of second airtight housings (72); the first airtight housings (71) and the second airtight housings (72) are both provided with housing connectors (74); airtight sliding bars (75) are symmetrically provided on the housing connectors (74); the airtight connecting plates (73) are installed in the detection housing (1); the airtight sliding bars (75) are slidably connected to the airtight connecting plates (73); an airtight spring (76) is installed between the housing connectors (74) and the airtight connecting plates (73); and a sifter (77) is installed in the first airtight housing (71); The sifter (77) comprises a sifting housing (771), wherein the sifting housing (771) is installed in a first airtight housing (71), a sliding plate (772) is slidably installed in the sifting housing (771), a connecting column (773) is installed at the bottom end of the sliding plate (772), an extrusion head (774) is installed at the bottom end of the connecting column (773), a sliding block (775) is symmetrically and slidably installed at the bottom end of the sifting housing (771), a limiting column (777) is installed on one side of the sliding block (775), a sifting spring (776) is installed between the sliding block (775) and the sifting housing (771), a sifting hole is provided at the bottom end of the sifting housing (771), the limiting column (777) can slide freely in the sifting hole, and airtight holes are provided at positions corresponding to the sifting holes in the first airtight housing (71) and the second airtight housing (72); The fixed guide assembly (8) comprises a fixed guide (81) and a guide base (83), wherein the fixed guide (81) is engaged with the first airtight shell (71) and the second airtight shell (72); The fixed guide (81) comprises a fixed guide cylinder (811), a sliding spring (814) and a restraining rod (815); the fixed guide cylinder (811) is symmetrically provided with side sliding blocks (812); the fixed guide cylinder (811) is slidably connected to the guide block (84) via the side sliding blocks (812); spring connecting plates (813) are symmetrically installed on both sides of the fixed guide cylinder (811); one end of the sliding spring (814) is connected to the spring connecting plate (813); and the sliding spring (814) is symmetrically provided with a spring connecting plate (813). The other end of the restraint rod (814) is connected to the restraint rod (815), and the restraint rod (815) passes through the spring connecting plate (813) and the fixed guide cylinder (811) respectively. A sliding plate (816) is installed at one end of the restraint rod (815), and the sliding plate (816) is slidably connected to the reset assembly (6). The other end of the restraint rod (815) is engaged with the airtight holes on the first airtight shell (71) and the second airtight shell (72), and a sealing ring is provided on the inner wall of the fixed guide cylinder (811); The reset assembly (6) comprises a first reset cylinder (62), a second reset cylinder (65) and an electric telescopic rod (64); the first reset cylinder (62) is installed in the detection housing (1); a reset push plate (61) is installed on the output shaft of the first reset cylinder (62); and a card slot matching the shapes of the first airtight housing (71) and the second airtight housing (72) is provided on the reset push plate (61).

2. The blood collection needle detection device with screening function according to claim 1, characterized in that: The first airtight shell (71) and the second airtight shell (72) are both provided with a plurality of exhaust ports (711), the first airtight shell (71) and the second airtight shell (72) are provided with needle sealing rings (712), and a sealed chamber (713) is formed between the first airtight shell (71), the second airtight shell (72) and the sifter (77).

3. The blood collection needle detection device with screening function according to claim 1, characterized in that: The fixed guide assembly (8) further comprises a guide base (83), a guide spring (82) is installed between the fixed guide (81) and the guide base (83), a guide block (84) is installed on the guide base (83), the fixed guide (81) is slidably connected to the guide base (83), the fixed guide (81) is slidably connected to the reset assembly (6), a feed hole (831) penetrating from top to bottom is provided on the guide base (83), and the guide base (83) is connected to the detection housing (1).

4. The blood collection needle detection device with screening function according to claim 1, characterized in that: The second reset cylinder (65) is installed in the detection housing (1); a reset slide plate (66) is installed on the output shaft of the second reset cylinder (65); a slide groove is provided on the reset slide plate (66); the reset slide plate (66) is slidably connected to the sliding plate (816) via the slide groove; the electric telescopic rod (64) is installed in the detection housing (1); a reset push rod (63) is installed on the output shaft of the electric telescopic rod (64).

5. The blood collection needle detection device with screening function according to claim 1, characterized in that: The screening assembly (5) comprises a sliding side plate (51) and a sliding cylinder (52), wherein the sliding side plate (51) is slidably connected to the detection housing (1), a herringbone guide plate (53) is installed between the sliding side plates (51), and the herringbone guide plate (53) is in a herringbone shape; the sliding cylinder (52) is installed in the detection housing (1), and the output shaft of the sliding cylinder (52) is connected to the sliding side plate (51); the air pressure output assembly (9) comprises an output cylinder (91), wherein the output cylinder (91) is installed in the detection housing (1), and an air delivery column (92) is installed on the output shaft of the output cylinder (91), and a plurality of air pressure delivery heads (93) are installed at the bottom end of the air delivery column (92), the air delivery column (92) is connected to the inside of the air pressure delivery head (93), and the air delivery column (92) is externally connected to an air pump.

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