CN116519356A - Sampling equipment for public health preventive medicine - Google Patents

Abstract

The invention relates to sampling equipment, in particular to sampling equipment for public health preventive medicine. Including support frame, regulation board, remove subassembly, movable rod, rotating sleeve, second motor and clamping assembly etc. the support frame lower part rear side articulates there is the regulation board that prescribes a limit to the sampling range, and movable rod lower part rotation is connected with the rotating sleeve, and movable rod lower part is connected with the second motor, and the output shaft of rotating sleeve and second motor is equipped with the removal subassembly that is used for controlling cotton swab and removes on the support frame, is equipped with the clamping assembly who is used for pressing from both sides tight cotton swab on the rotating sleeve. According to the invention, physiological saline can be sprayed on the cotton swab through the spray pipe, then the cotton swab is driven to move downwards into the rotary sleeve through the second electric push rod, then the cotton swab is driven to rotate downwards through the rotary sleeve to be in contact with the public supplies, and then the cotton swab can be driven to automatically wipe at the position of the public supplies, which is required to be sampled, through the first motor and the first electric push rod, so that automatic sampling work is completed, and the working efficiency is improved.

Description

Sampling equipment for public health preventive medicine

Technical Field

The invention relates to sampling equipment, in particular to sampling equipment for public health preventive medicine.

Background

Public health and preventive medicine relates to more than 20 subjects such as epidemiology, sanitation statistics, sanitation economics, health education and the like, and in order to ensure the safety and sanitation of public supplies in public places, the public supplies are generally required to be sampled and detected regularly.

At present, for sampling and detecting bedding such as a bed sheet and a quilt cover, scissors, a cotton swab, a specification plate and normal saline are needed to be prepared in advance, then the plush end of the cotton swab is moistened by the normal saline, then the specification plate with the length of 5cm is placed on the bed sheet or the quilt cover, then the cotton swab is forcefully smeared in a range limited by the specification plate by being held by hands, sampling is carried out in a process, the contact part of the cotton swab and hands is sheared by the scissors, and then the cotton swab is placed in the normal saline for 4 hours for inspection. The steps of the whole operation flow are more, when the objects to be detected are more, the manual operation is time-consuming and labor-consuming, and the working efficiency is low.

Disclosure of Invention

The invention aims to overcome the defects that the working efficiency is low due to more steps and more time and labor waste of manual operation when public supplies are sampled, and provides sampling equipment for public health preventive medicine, which can improve the working efficiency.

The technical implementation scheme of the invention is as follows:

the utility model provides a sampling equipment for public health preventive medicine, including the handle, the storage box, the support frame, the specification board, remove the subassembly, the slip cap, first electric putter, the movable rod, the rotating sleeve, the second motor, clamping assembly, photoelectric sensor, a controller, unloading mechanism and spraying mechanism, the handle left end is connected with the storage box that is used for storing cotton swab, the storage box bottom is connected with the support frame, support frame lower part rear side articulates there is the specification board that prescribes a limit to the sampling range, support frame lower part slidingtype is connected with the slip cap, slip cap lower part is connected with first electric putter, be connected with the movable rod on the telescopic link of first electric putter, the movable rod lower part pivoted is connected with the rotating sleeve, the movable rod lower part is connected with the second motor, the output shaft of rotating sleeve and second motor, photoelectric sensor comprises transmitter and receiver, transmitter and receiver are installed respectively on support frame and slip cap, be equipped with the controller on the support frame top left side, be equipped with the moving assembly that is used for controlling cotton swab removal, be equipped with on the rotating sleeve and be used for the clamping assembly of cotton swab, be equipped with on the storage box and be used for carrying out unloading mechanism to the cotton swab, be equipped with on the handle that is used for spraying physiological swab.

Preferably, the movable assembly comprises a first motor and a twist rod, the front side of the lower part of the support frame is connected with the first motor, the output shaft of the first motor is connected with the twist rod, the twist rod is rotationally connected with the support frame, and the sliding sleeve is in threaded connection with the twist rod.

Preferably, the clamping assembly comprises a clamping block and a compression spring, the left side of the rotary sleeve is connected with the clamping block in a sliding mode, and the compression spring is connected between the clamping block and the rotary sleeve.

Preferably, the unloading mechanism is including second electric putter, extrusion piece, slide bar, tensioning spring, clamp splice, hold-down spring and fender material subassembly, and the storage tank left side is connected with the second electric putter, is connected with the extrusion piece on the telescopic link of second electric putter, and both sides left part all is connected with the slide bar around the storage tank, all is connected with tensioning spring between slide bar and the storage tank, and slide bar lower part all is connected with the clamp splice in a sliding manner, and extrusion piece and clamp splice contact all are connected with hold-down spring between clamp splice and the adjacent slide bar, and the storage tank lower part is equipped with keeps off material subassembly.

Preferably, the material blocking assembly comprises a rotary baffle and a torsion spring, the rotary baffle is rotatably connected to the left side of the lower part of the storage box, and the torsion spring is connected between the rotary baffle and the storage box.

Preferably, the spraying mechanism comprises a liquid storage tank, a water pump, a liquid inlet pipe and a spray pipe, wherein the left part of the grip is connected with the liquid storage tank, the left side of the top of the liquid storage tank is connected with the water pump, the liquid inlet pipe is communicated between the water inlet of the water pump and the liquid storage tank, the spray pipe is connected on the left side of the inner wall of the liquid storage tank, and the upper end of the spray pipe is communicated with the water outlet of the water pump.

Preferably, the cotton swab pushing device further comprises a pushing mechanism for pushing the cotton swab to move left, the pushing mechanism comprises guide rods, pushing plates, reset springs, elastic ropes and guide rings, the guide rods are symmetrically connected to the left side and the front and the rear of the lower portion of the storage box, the pushing plates are connected between the right ends of the guide rods in a sliding mode, the reset springs are connected between the pushing plates and the two guide rods, the reset springs are wound on the outer sides of the guide rods, the elastic ropes are connected between the lower ends of the sliding rods and the left side of the pushing plates, the guide rings are connected to the left side of the bottom of the guide rods, and the elastic ropes penetrate through the guide rings.

Preferably, the cotton swab cutting device further comprises a cutting mechanism for cutting off the plastic rod of the cotton swab, the cutting mechanism comprises a connecting frame, a third motor, a screw and a cutter, the connecting frame is connected to the middle of the rotating sleeve, the third motor is connected to the upper portion of the front side of the connecting frame, the screw is connected to the output shaft of the third motor, the screw is rotationally connected with the connecting frame, the cutters are symmetrically connected to the left side of the upper portion of the connecting frame in a sliding mode, and the cutters are in threaded connection with the screw.

Preferably, the cutter further comprises an ejector block for ejecting the clamping block to the left, wherein the ejector block is connected to the left side of the cutter at the front side, and the ejector block is in contact with the clamping block.

Preferably, the cotton swab storage box further comprises a protective cover for protecting the cotton swab, and the right side of the upper part of the storage box is connected with the protective cover in a sliding mode.

Compared with the prior art, the invention has the following advantages:

1. according to the invention, physiological saline can be sprayed on the cotton swab through the spray pipe, then the cotton swab is driven to move downwards into the rotary sleeve through the second electric push rod, then the cotton swab is driven to rotate downwards through the rotary sleeve to be in contact with the public supplies, and then the cotton swab can be driven to automatically wipe at the position of the public supplies, which is required to be sampled, through the first motor and the first electric push rod, so that automatic sampling work is completed, and the working efficiency is improved.

2. When the sliding rod moves downwards, the push plate can be pulled to move leftwards through the elastic rope, so that cotton swabs in the storage box can be pushed to move leftwards, and the cotton swabs are prevented from being clamped in the storage box.

3. According to the invention, the cutter is driven to move towards one side close to each other by the third motor, so that the plastic rod of the cotton swab can be automatically sheared, the plastic rod of the cotton swab is not required to be manually sheared, and time and labor are saved.

4. When the ejector block moves backwards, the clamping block can be extruded to move leftwards, so that the plastic rod remained in the rotary sleeve falls downwards, and the next cotton swab is conveniently inserted into the rotary sleeve.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of a first embodiment of the moving assembly and clamping assembly of the present invention.

Fig. 3 is a schematic view showing a second perspective structure of the moving assembly and the clamping assembly of the present invention.

Fig. 4 is a schematic perspective view of a blanking mechanism of the present invention.

Fig. 5 is a schematic perspective view of the sliding rod, clamping block and compression spring of the present invention.

FIG. 6 is a schematic perspective view of the extrusion block and the clamping block of the present invention.

Fig. 7 is a schematic perspective view of a material blocking assembly according to the present invention.

Fig. 8 is a schematic perspective view of the spraying mechanism of the present invention.

Fig. 9 is a schematic perspective view of a pushing mechanism of the present invention.

FIG. 10 is a schematic view showing a first perspective structure of the cutting mechanism of the present invention.

FIG. 11 is a schematic view showing a second perspective structure of the cutting mechanism of the present invention.

Fig. 12 is a schematic perspective view of a protective cover according to the present invention.

The marks of the components in the drawings are as follows: 1. the novel plastic bottle comprises a handle, 2, a storage box, 3, a supporting frame, 4, a specification plate, 5, a first motor, 6, a fried dough twist rod, 7, a sliding sleeve, 8, a first electric push rod, 9, a moving rod, 10, a rotating sleeve, 11, a second motor, 12, a clamping block, 13, a compression spring, 14, a photoelectric sensor, 15, a controller, 16, a blanking mechanism, 161, a second electric push rod, 162, a squeezing block, 163, a sliding rod, 164, a tensioning spring, 165, a clamping block, 166, a compression spring, 167, a rotating baffle plate, 168, a torsion spring, 17, a spraying mechanism, 171, a liquid storage tank, 172, a water pump, 173, a liquid inlet pipe, 174, a spray pipe, 18, a pushing mechanism, 181, a guide rod, 182, a push plate, 183, a reset spring, 184, an elastic rope, 185, a guide ring, 19, a cutting mechanism, 191, a connecting frame, 192, a third motor, 193, a screw, 194, a cutter, 20, a jacking block, 21 and a protective cover.

Detailed Description

The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

1-8, comprising a handle 1, a storage box 2, a support frame 3, a specification plate 4, a first motor 5, a twist rod 6, a sliding sleeve 7, a first electric push rod 8, a moving rod 9, a rotating sleeve 10, a second motor 11, a clamping block 12, a compression spring 13, a photoelectric sensor 14, a controller 15, a blanking mechanism 16 and a spraying mechanism 17, wherein the left end of the handle 1 is connected with the storage box 2, the bottom in the storage box 2 inclines towards the left lower side, the bottom of the storage box 2 is welded with the support frame 3, the back side of the lower part of the support frame 3 is hinged with the specification plate 4, the specification plate 4 is placed on a public article and can limit the sampling range, the front side of the lower part of the support frame 3 is bolted with the first motor 5, the twist rod 6 is connected on an output shaft of the first motor 5, the twist rod 6 is in rotary connection with the support frame 3, the sliding sleeve 7 is in threaded connection with the twist rod 6, the lower part of the supporting frame 3 is connected with a sliding sleeve 7 in a sliding manner, the lower part of the sliding sleeve 7 is connected with a first electric push rod 8 in a bolting manner, a telescopic rod of the first electric push rod 8 is connected with a moving rod 9, the lower part of the moving rod 9 is connected with a rotating sleeve 10 in a rotating manner, the lower part of the moving rod 9 is connected with a second motor 11 in a bolting manner, the rotating sleeve 10 is connected with an output shaft of the second motor 11 in a sliding manner, a photoelectric sensor 14 consists of a transmitter and a receiver, the transmitter and the receiver are respectively arranged on the supporting frame 3 and the sliding sleeve 7, the left side of the rotating sleeve 10 is connected with a clamping block 12 in a sliding manner, the clamping block 12 can clamp cotton swabs in the rotating sleeve 10, then the first motor 5 drives the cotton rods 6 to rotate so as to drive the cotton swabs to smear and sample on public products, a compression spring 13 is connected between the clamping block 12 and the rotating sleeve 10, and the left side of the top of the handle 1 is connected with a controller 15, the material storage box 2 is provided with a blanking mechanism 16, and the grip 1 is provided with a spraying mechanism 17.

As shown in fig. 1, fig. 4, fig. 5, fig. 6 and fig. 7, the blanking mechanism 16 comprises a second electric push rod 161, an extrusion block 162, a sliding rod 163, a tensioning spring 164, a clamping block 165, a compression spring 166, a rotary baffle 167 and a torsion spring 168, the second electric push rod 161 is bolted to the left side of the storage box 2, the extrusion block 162 is connected to the telescopic rod of the second electric push rod 161, the sliding rod 163 is connected to the left part of the front and rear sides of the storage box 2 in a sliding manner, the tensioning spring 164 is connected between the sliding rod 163 and the storage box 2, the clamping block 165 is connected to the lower part of the sliding rod 163 in a sliding manner, the clamping block 165 can clamp the cotton swab at the leftmost side by moving towards one side close to each other, then the clamping block 165 can drive the cotton swab to move downwards into the rotary sleeve 10, the extrusion block 162 is contacted with the clamping block 165, the compression spring 166 is connected between the clamping block 165 and the adjacent sliding rod 163, the rotary baffle 167 is connected to the left side of the lower part of the storage box 2 in a rotating manner, and the torsion spring 168 is connected between the rotary baffle 167 and the storage box 2.

As shown in fig. 1 and 8, the spraying mechanism 17 comprises a liquid storage tank 171, a water pump 172, a liquid inlet pipe 173 and a spray pipe 174, wherein the left part of the grip 1 is connected with the liquid storage tank 171, the liquid storage tank 171 can store normal saline, the water pump 172 is bolted to the left side of the top of the liquid storage tank 2, the liquid inlet pipe 173 is communicated between the water inlet of the water pump 172 and the liquid storage tank 171, the spray pipe 174 is connected to the left side of the inner wall of the liquid storage tank 2, the upper end of the spray pipe 174 is communicated with the water outlet of the water pump 172, and the water pump 172 can spray the normal saline on a cotton swab through the spray pipe 174.

Firstly, a proper amount of cotton swab is put into a storage box 2, the fluff end of the cotton swab is upward, because the inner bottom of the storage box 2 is inclined towards the left and the lower direction, the cotton swab at the leftmost side can slide left and right, the cotton swab at the leftmost side can be contacted with the left side of the inner wall of the storage box 2, a rotary baffle 167 can block the bottom of the cotton swab at the leftmost side, then a proper amount of physiological saline is added into a liquid storage tank 171, when the public supplies are required to be sampled, a handle 1 can be held by a hand, a specification plate 4 is placed at a position on the public supplies to be sampled, then a water pump 172 is controlled by a controller 15 to pump the physiological saline in the liquid storage tank 171 through a liquid inlet pipe 173, the physiological saline can be sprayed on the fluff end of the cotton swab through a spray pipe 174, then a second electric push rod 161 is controlled by the controller 15 to drive a squeezing block 162 to move downwards, the squeezing block 165 can be squeezed to move towards one side close to each other, the compression spring 166 stretches to enable the clamping block 165 to clamp the cotton swab at the leftmost side, then the extrusion block 162 can extrude the clamping block 165 to move downwards to drive the sliding rod 163 to move downwards, the tensioning spring 164 compresses, the clamping block 165 can drive the cotton swab to move downwards, the cotton swab can extrude the rotary baffle 167 to rotate downwards to open, the torsion spring 168 deforms, when the cotton swab is separated from the rotary baffle 167, the sliding rod 163 can prop against the rotary baffle 167, when the cotton swab contacts the clamping block 12, the clamping block 12 can be extruded to move leftwards, the compression spring 13 compresses, then the controller 15 controls the second electric push rod 161 to drive the extrusion block 162 to move upwards to separate from the clamping block 165, the compression spring 166 is restored to drive the clamping block 165 to move towards the side away from each other to enable the clamping block 165 to loosen the cotton swab, at the moment, under the elastic force of the compression spring 13, the clamping block 12 can clamp the cotton swab, simultaneously, tensioning spring 164 restores to the original state, drive slide bar 163 and clamp splice 165 upward motion and reset, when slide bar 163 and rotatory baffle 167 separate, torsional spring 168 restores to the original state, drive rotatory baffle 167 and upwards rotate and close, make rotatory baffle 167 block other cotton swabs, then control rotatory cover 10 of second motor 11 drive through controller 15 and rotate down, drive cotton swab, make cotton swab's fine hair end and the position that public supplies need sample contact, then accessible controller 15 controls first motor 5 and drives the rotation of cotton pole 6, can drive slide cover 7 back and forth reciprocating motion, drive cotton swab back and forth reciprocating motion, rethread controller 15 controls first electric putter 8 intermittent type and extends, can drive movable rod 9 intermittent type to right side motion, drive cotton swab intermittent type to right side motion, thereby can automatic control cotton swab removes in the region that specification board 4 was limited, make cotton swab can be automatic in the position that public supplies need sample clean, then the cotton swab that the manual work will take out and detect, compression spring 13 restores to the original state, drive clamp splice 12 then reset through the effect of reset photoelectric sensor 14 can make centering cover completely.

As shown in fig. 1 and 9, still include pushing equipment 18, pushing equipment 18 is including guide bar 181, push pedal 182, reset spring 183, elastic rope 184 and guide ring 185, symmetrical welding has guide bar 181 around storage box 2 lower part left side, sliding connection has push pedal 182 between the guide bar 181 right-hand member, push pedal 182 moves left and can promote cotton swab left, prevent cotton swab card in storage box 2, all be connected with reset spring 183 between push pedal 182 and two guide bars 181, reset spring 183 winds in the guide bar 181 outside, all be connected with elastic rope 184 between slide bar 163 lower extreme and the push pedal 182 left side, guide ring 185 has all been welded in guide bar 181 bottom left side, elastic rope 184 passes guide ring 185, when slide bar moves down, can pull push pedal 182 left motion through elastic rope 184, reset spring 183 compresses, guide bar 181 can guide push pedal 182, cotton swab in the storage box 2 moves left, prevent cotton swab card in storage box 2, reset spring 184 can not be carried out to the state when the elastic rope 184 moves left, reset spring 184 can not be carried out to the state, reset spring 184 can be restored to the state when the elastic rope 163 moves left, simultaneously, reset spring 184 can be restored to the state when the state is reset to the elastic rope is reset.

As shown in fig. 1, 10 and 11, the cotton swab collecting device further comprises a cutting mechanism 19, the cutting mechanism 19 comprises a connecting frame 191, a third motor 192, a screw rod 193 and a cutter 194, the connecting frame 191 is welded at the middle of the rotary sleeve 10, the third motor 192 is bolted to the upper portion of the front side of the connecting frame 191, the screw rod 193 is connected to an output shaft of the third motor 192, the screw rod 193 is rotationally connected with the connecting frame 191, the cutter 194 is symmetrically and slidingly connected to the left side of the upper portion of the connecting frame 191, the cutter 194 moves to the side close to each other to cut off the plastic rod of the cotton swab, the cutter 194 is in threaded connection with the screw rod 193, after the cotton swab is sampled, the controller 15 can control the third motor 192 to drive the screw rod 193 to rotate, the cutter 194 moves to the side close to each other, the cutter 194 can cut off the plastic rod of the cotton swab, the plastic rod of the cotton swab is not required to be manually cut, and time and labor are saved.

As shown in fig. 10, the plastic rod rotating device further comprises a top block 20, the left side of the front cutter 194 is welded with the top block 20, the top block 20 is in contact with the clamping block 12, when the cutter 194 moves towards one side close to each other, the front cutter 194 can drive the top block 20 to move backwards, the top block 20 can push the clamping block 12 out leftwards, the clamping block 12 loosens the plastic rod remained in the rotating sleeve 10, and the plastic rod can drop downwards.

As shown in fig. 12, the cotton swab storage box further comprises a protective cover 21, the protective cover 21 is connected to the right side of the upper portion of the storage box 2 in a sliding manner, and the protective cover 21 can cover the cotton swab in the storage box 2 to prevent the cotton swab from being polluted.

The technical principles of the embodiments of the present invention are described above in connection with specific embodiments. The description is only intended to explain the principles of the embodiments of the invention and should not be taken in any way as limiting the scope of the embodiments of the invention. Based on the explanations herein, those skilled in the art will recognize other embodiments of the present invention without undue burden, and those ways that are within the scope of the present invention.

Claims (10)

1. The utility model provides a public health preventive medicine is with sampling equipment, including the handle, the storage box, the support frame, specification board and, characterized by, still including moving the subassembly, the sliding sleeve, first electric putter, the movable rod, the rotating sleeve, the second motor, clamping assembly, photoelectric sensor, a controller, unloading mechanism and spraying mechanism, the handle left end is connected with the storage box that is used for storing cotton swab, the storage box bottom is connected with the support frame, support frame lower part rear side articulates there is the specification board that prescribes a limit to the sampling range, support frame lower part slidingtype is connected with the sliding sleeve, sliding sleeve lower part is connected with first electric putter, be connected with the movable rod on the telescopic link of first electric putter, the rotary sleeve lower part swivelling type is connected with the rotating sleeve, the movable rod lower part is connected with the second motor, the output shaft of rotating sleeve and second motor, photoelectric sensor comprises transmitter and receiver, transmitter and receiver are installed respectively on support frame and sliding sleeve, top left side is connected with the controller, be equipped with the movable assembly that is used for controlling cotton swab removal on the support frame, be equipped with the clamping assembly that is used for pressing from both sides cotton swab, be equipped with on the rotating sleeve and be used for clamping cotton swab's clamping assembly, be equipped with on the storing hopper, be used for carrying out unloading mechanism to spray on the handle to the cotton swab.

2. The sampling device for public health preventive medicine according to claim 1, wherein the moving assembly comprises a first motor and a twist rod, the front side of the lower part of the support frame is connected with the first motor, the twist rod is connected with an output shaft of the first motor and is rotatably connected with the support frame, and the sliding sleeve is in threaded connection with the twist rod.

3. A preventive medical sampling device for public health according to claim 2, wherein the clamping assembly comprises a clamping block and a compression spring, the left side of the rotary sleeve is connected with the clamping block in a sliding manner, and the compression spring is connected between the clamping block and the rotary sleeve.

4. The sampling device for public health preventive medicine according to claim 3, wherein the blanking mechanism comprises a second electric push rod, an extrusion block, a sliding rod, a tensioning spring, a clamping block, a compression spring and a blocking component, the left side of the storage box is connected with the second electric push rod, the extrusion block is connected to the telescopic rod of the second electric push rod, the sliding rods are connected to the left parts of the front side and the rear side of the storage box in a sliding mode, the tensioning spring is connected between the sliding rods and the storage box, the lower parts of the sliding rods are connected with the clamping blocks in a sliding mode, the compression springs are connected between the clamping blocks and the adjacent sliding rods, and the blocking component is arranged on the lower part of the storage box.

5. The sampling device for preventive medicine of public health according to claim 4, wherein the material blocking assembly comprises a rotary baffle and a torsion spring, the rotary baffle is rotatably connected to the left side of the lower part of the storage box, and the torsion spring is connected between the rotary baffle and the storage box.

6. The sampling device for public health preventive medicine according to claim 5, wherein the spraying mechanism comprises a liquid storage tank, a water pump, a liquid inlet pipe and a spray pipe, the left part of the grip is connected with the liquid storage tank, the left side of the top of the liquid storage tank is connected with the water pump, the liquid inlet pipe is communicated between the water inlet of the water pump and the liquid storage tank, the left side of the inner wall of the liquid storage tank is connected with the spray pipe, and the upper end of the spray pipe is communicated with the water outlet of the water pump.

7. The sampling device for public health preventive medicine according to claim 6, further comprising a pushing mechanism for pushing the cotton swab to move leftwards, wherein the pushing mechanism comprises a guide rod, a push plate, a return spring, an elastic rope and a guide ring, the guide rod is symmetrically connected to the left side of the lower portion of the storage box, the push plate is slidably connected between the right ends of the guide rods, the return spring is connected between the push plate and the two guide rods, the return spring is wound on the outer side of the guide rod, the elastic rope is connected between the lower end of the slide rod and the left side of the push plate, the guide ring is connected to the left side of the bottom of the guide rod, and the elastic rope penetrates through the guide ring.

8. The sampling device for public health preventive medicine according to claim 7, further comprising a cutting mechanism for cutting off the plastic rod of the cotton swab, wherein the cutting mechanism comprises a connecting frame, a third motor, a screw and a cutter, the connecting frame is connected to the middle part of the rotary sleeve, the third motor is connected to the upper part of the front side of the connecting frame, the screw is connected to the output shaft of the third motor, the screw is rotationally connected with the connecting frame, the cutters are symmetrically connected to the front and rear sides of the upper part of the connecting frame in a sliding mode, and the cutters are in threaded connection with the screw.

9. The sampling device for preventive medicine of public health according to claim 8, further comprising an ejector block for ejecting the clamp block leftward, wherein the ejector block is connected to the left side of the cutter on the front side, and the ejector block is in contact with the clamp block.

10. The sampling device for public health preventive medicine according to claim 9, further comprising a protective cover for protecting the cotton swab, wherein the protective cover is slidably connected to the right side of the upper portion of the storage box.