An apparatus for collecting leech saliva extract

Abstract

The present invention relates to the technical field of leech saliva extraction, specifically a device for collecting leech saliva extract, comprising an outer frame, a saliva extraction part, a separation part, a negative pressure part and a shaking part, wherein the outer wall of the outer frame is penetrated with four negative pressure ports distributed at equal angles, and the saliva extraction part is fixedly mounted on the top of the outer frame and extends to the inside of the outer frame. The leech body is squeezed by the inner wall of the anti-reverse tube, and the leech continues to spit out saliva after being pressed. Since the conical extrusion cylinder and the anti-reverse tube are circularly arranged, the conical extrusion cylinder and the inner wall of the anti-reverse tube squeeze the leech body in an embracing manner during the downward movement of the water droplets, so that the leech body is more evenly stressed, and the leech saliva effect is more ideal. Compared with the existing means, it also avoids the situation that the leech is easily crushed due to local squeezing, and the inner wall of the anti-reverse tube is provided with an anti-reverse ring groove inclined downward, so that the leech cannot crawl back after entering the anti-reverse tube.

Description

Technical Field

[0001] The present invention relates to the technical field of leech saliva extraction, and specifically to a device for collecting leech saliva extract. Background Art

[0002] Hirudin is an anticoagulant protein extracted from medical leeches. It is found that a large amount of hirudin can be extracted from leeches and their salivary gland secretions. A Chinese patent with the reference publication number CN118406137B discloses a device and method for collecting leech saliva extract. The movable plate and the extrusion plate in the second funnel will perform secondary extrusion on the active leeches, thereby increasing the yield of hirudin. The leeches can be screened out by their own activity. This method has relatively low requirements for the experience of the staff, helps to reduce costs, and performs secondary re-pressing for re-collection, increasing the collection amount of hirudin, and will not cause excessive stimulation to the leeches due to electrodes, improving the survival rate of the leeches and avoiding losses caused by the death of the leeches. However, the device for collecting leech saliva extract squeezes the leeches through the upper and lower funnels to secrete saliva, which can only make the upper and lower parts of the leech body stressed locally, and the saliva secretion effect is not ideal. In order to better obtain the saliva of the leeches, if the extrusion force is too large, it will cause the leeches to be over-pressed and die. Therefore, we propose a device for collecting leech saliva extract to solve the above technical problems. Summary of the Invention

[0003] The present invention provides the following technical solution: A device for collecting leech saliva extract, including an outer frame, and four equally angularly distributed negative pressure ports are penetrated through the outer wall of the outer frame;

[0004] A saliva extraction part, fixedly installed on the top of the outer frame and extending into the interior of the outer frame, for collecting leech saliva;

[0005] A separation part, movably installed inside the outer frame and extending to its bottom, for collecting leech saliva and leeches;

[0006] A negative pressure part, fixedly installed on the outer wall of the outer frame in a circumferential array form, for generating negative pressure inside the outer frame;

[0007] A shaking part, fixedly installed on the inner wall of the outer frame in a circumferential array form, for shaking the separation part.

[0008] As a preferred solution of the present invention, the saliva extraction part includes:

[0009] A baffle plate, fixedly installed on the top of the outer frame;

[0010] Guide holes, penetrated through the top of the baffle plate, and the number is multiple;

[0011] The hopper is fixedly installed on the top of the baffle and is located around a plurality of guiding holes;

[0012] The conical extrusion cylinder is fixedly installed at the bottom of the baffle and is located around the opening of the guiding hole. The diameter of the hopper gradually decreases downward;

[0013] The anti-backflow pipe is fixedly installed at the bottom of the conical extrusion cylinder and is communicated with the inside of the conical extrusion cylinder.

[0014] As a preferred solution of the present invention, the separation part includes:

[0015] The saliva drainage pipe is located at the bottom of the anti-backflow pipe;

[0016] The saliva drainage assembly is fixedly installed on the top of the saliva drainage pipe, and the saliva drainage assembly is arranged in a tower shape;

[0017] The receiving conical hopper is slidably installed on the inner wall of the outer frame;

[0018] The assembly holes are penetrated and opened at the top of the receiving conical hopper, and the number and positions correspond to those of the saliva drainage pipes one by one. The saliva drainage pipes are fixedly installed inside the assembly holes at the corresponding positions;

[0019] The collecting hopper is fixedly installed at the bottom of the assembly hole;

[0020] The collecting bottle is screwed on the lower part of the outer wall of the collecting hopper;

[0021] The saliva receiving groove is screwed on the bottom of the outer frame, and the inner wall of the saliva receiving groove is slidably connected with the outer wall of the collecting hopper.

[0022] As a preferred solution of the present invention, the negative pressure part includes:

[0023] The negative pressure pump housing is fixedly installed on the outer wall of the outer frame and is located around the opening of the negative pressure port;

[0024] The diaphragm is fixedly installed in the middle of the inner wall of the negative pressure pump housing;

[0025] The electric cylinder is fixedly installed on the side surface of the negative pressure pump housing away from the outer frame. The output rod of the electric cylinder extends movably into the inside of the negative pressure pump housing and is fixedly connected with the middle of the diaphragm;

[0026] The flow guiding cover is fixedly installed on the side surface of the negative pressure pump housing away from the electric cylinder and is communicated with the inside of the negative pressure pump housing. The flow guiding cover extends into the inside of the negative pressure port.

[0027] As a preferred solution of the present invention, the negative pressure part further includes:

[0028] The one-way valve is fixedly installed at one end of the bottom of the negative pressure pump housing away from the electric cylinder, and the one-way valve is communicated with the inside of the negative pressure pump housing;

[0029] A conical spring is sleeved around the outer periphery of the output rod of the electric cylinder and is fixedly installed between one side surface of the diaphragm away from the outer frame and one inner wall of the negative pressure pump housing.

[0030] Air holes are horizontally opened at one end of the outer wall of the negative pressure pump housing close to the electric cylinder, and the number of the air holes is two. The two air holes are symmetrically distributed about the center of the negative pressure pump housing.

[0031] As a preferred solution of the present invention, the jitter part includes:

[0032] A cylinder block is fixedly installed on the inner wall of the outer frame in a circumferential array form and is located between two adjacent negative pressure ports.

[0033] A piston is slidably installed on the inner wall of the cylinder block.

[0034] A push rod is fixedly installed at the bottom of the piston, and the bottom of the push rod is fixedly connected to the top edge of the receiving conical hopper.

[0035] A main air supply pipe is fixedly installed at the top of the cylinder block and is communicated with the inside of the cylinder block. The main air supply pipe penetrates through the side wall of the outer frame and extends to its periphery.

[0036] An air supply manifold is fixedly installed at one end of the main air supply pipe away from the cylinder block and is communicated with the inside of the main air supply pipe. Two ends of the air supply manifold are fixedly connected to the ends of two adjacent air holes.

[0037] As a preferred solution of the present invention, the saliva drainage assembly is arranged to gradually increase in diameter downward, and the bottom diameter of the saliva drainage assembly is larger than the inner diameter of the anti-reverse pipe. The saliva drainage assembly is composed of a plurality of corrugated saliva drainage guide strips arranged in a circumferential array on the top of the saliva drainage pipe.

[0038] As a preferred solution of the present invention, the saliva receiving groove is provided with an open top, and the saliva receiving groove is located at the bottom of a plurality of saliva drainage pipes. A shut-off valve is fixedly installed on the bottom output end of the saliva receiving groove, and a discharge pipe is fixedly installed at the output end of the shut-off valve.

[0039] As a preferred solution of the present invention, a plurality of anti-reverse annular grooves are equidistantly distributed up and down on the inner wall of the anti-reverse pipe, and the cross section of the anti-reverse annular groove is arranged obliquely downward.

[0040] As a preferred solution of the present invention, four legs are fixedly arranged on the outer wall of the outer frame and are equally angularly distributed.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] 1. In the present invention, the body of the leech is squeezed by the inner wall of the anti-reverse tube, and the leech continues to spit out saliva after being squeezed. Since the conical squeezing tube and the anti-reverse tube are circular, the conical squeezing tube and the inner wall of the anti-reverse tube squeeze the leech body in an embracing manner during the downward movement of the water droplets, so that the leech body is more evenly stressed and the leech saliva effect is more ideal. Compared with the existing means, it also avoids the situation that the leech is easily crushed due to local squeezing. In addition, the inner wall of the anti-reverse tube is provided with an anti-reverse ring groove obliquely downward, so that the leech cannot crawl back after entering the anti-reverse tube.

[0043] 2. In the present invention, the middle part of the diaphragm is driven to move away from the outer frame by the output shaft of the electric cylinder, causing the compression conical spring to store force, and at the same time causing a negative pressure effect inside the negative pressure pump housing and inside the outer frame. The one-way valve is closed, and due to the negative pressure inside the outer frame, a downward suction effect can be generated on the leeches inside the anti-reverse tube, thereby accelerating the speed at which the leeches move downward along the inner wall of the anti-reverse tube, while also preventing the leeches from getting stuck inside the anti-reverse tube.

[0044] 3. In the present invention, when the middle part of the diaphragm moves to the maximum position in the direction away from the outer frame, the electric cylinder is powered off, and the rebound force of the conical spring is released, pushing the diaphragm to reset. At this time, the one-way valve is opened for ventilation, and external air enters the interior of the negative pressure pump housing through the one-way valve, and replenishes air to the interior of the outer frame through the guide cover, thereby preventing leeches from suffocating to death.

[0045] 4. In the present invention, during the continuous cyclic movement of the diaphragm, the receiving cone bucket shakes up and down, and some leeches stuck between the top of the receiving cone bucket and the outer wall of the saliva drainage tube are shaken into the interior of the collecting bucket, and then collected in the interior of the collecting bottle, thereby preventing the leeches from being stuck between the top of the receiving cone bucket and the outer wall of the saliva drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of the present invention;

[0047] Figure 2 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0048] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0049] Figure 4 It is a schematic diagram of the internal structure of the outer frame in the present invention;

[0050] Figure 5 It is a structural schematic diagram of the negative pressure part in the present invention;

[0051] Figure 6 It is a schematic diagram of the top cross-sectional structure of the negative pressure pump casing of the present invention;

[0052] Figure 7 It is a schematic diagram of the structure of the saliva drainage component in the present invention;

[0053] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of part B;

[0054] Figure 9 It is a structural schematic diagram of the receiving cone bucket in the present invention;

[0055] Figure 10 It is a schematic diagram of the side section structure of the cylinder body in the present invention;

[0056] Figure 11 It is a schematic diagram of the side section structure of the anti-reverse tube in the present invention.

[0057] In the figure: 100, outer frame; 101, negative pressure port; 200, saliva extraction part; 201, baffle; 202, guide hole; 203, bucket; 204, conical extrusion cylinder; 205, anti-reverse pipe; 2051, anti-reverse ring groove; 300, separation part; 301, saliva drainage tube; 302, saliva drainage assembly; 3021, saliva drainage guide strip; 303, receiving cone bucket; 304, assembly hole; 305, collection bucket; 306 , collecting bottle; 307, saliva receiving tank; 308, shut-off valve; 309, discharge pipe; 400, negative pressure part; 401, negative pressure pump housing; 402, diaphragm; 403, electric cylinder; 404, guide cover; 405, one-way valve; 406, conical spring; 407, air hole; 500, shaking part; 501, cylinder body; 502, piston; 503, push rod; 504, air supply main pipe; 505, air supply manifold; 600, support leg. DETAILED DESCRIPTION

[0058] 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.

[0059] See also Figures 1 to 11 The technical solution provided by the present invention specifically includes the following embodiments:

[0060] A device for collecting leech saliva extract, comprising an outer frame 100, a saliva extraction part 200, a separation part 300, a negative pressure part 400 and a shaking part 500. Four equally angularly distributed negative pressure ports 101 are penetrated through the outer wall of the outer frame 100. The saliva extraction part 200 is fixedly installed at the top of the outer frame 100 and extends into the interior of the outer frame 100 for collecting leech saliva. The separation part 300 is movably installed inside the outer frame 100 and extends to its bottom for collecting leech saliva and leeches. The negative pressure part 400 is fixedly installed on the outer wall of the outer frame 100 in a circumferential array for generating negative pressure inside the outer frame 100. The shaking part 500 is fixedly installed on the inner wall of the outer frame 100 in a circumferential array for the oscillation of the separation part 300. Four equally angularly distributed legs 600 are fixedly arranged on the outer wall of the outer frame 100 for the overall support and fixation of the device for leech saliva extract.

[0061] Further, specifically referring to Figure 2 、 Figure 3 and Figure 11 as shown:

[0062] The saliva extraction part 200 includes a baffle 201, a guiding hole 202, a hopper bin 203, a conical extrusion cylinder 204 and a non-return pipe 205. The baffle 201 is fixedly installed at the top of the outer frame 100. The guiding hole 202 is penetrated through the top of the baffle 201 and the number is multiple. The hopper bin 203 is fixedly installed at the top of the baffle 201 and is located outside the multiple guiding holes 202. The conical extrusion cylinder 204 is fixedly installed at the bottom of the baffle 201 and is located outside the opening of the guiding hole 202. The diameter of the hopper bin 203 gradually decreases downward. The non-return pipe 205 is fixedly installed at the bottom of the conical extrusion cylinder 204 and is communicated with the inside of the conical extrusion cylinder 204. A plurality of equally spaced non-return annular grooves 2051 are opened on the inner wall of the non-return pipe 205, and the cross section of the non-return annular groove 2051 is inclined downward.

[0063] Specifically, leeches are placed inside the hopper bin 203. Under the action of gravity, the leeches wriggle through the guiding holes 202 into the inside of the conical extrusion cylinder 204. Since the top diameter of the conical extrusion cylinder 204 is larger than its bottom diameter, it is convenient for the leeches to wriggle into the inside of the conical extrusion cylinder 204. As the leeches wriggle downward inside the conical extrusion cylinder 204, the inner wall of the conical extrusion cylinder 204 squeezes the leech bodies and gradually contracts. During this process, the leech saliva can be squeezed out, and the squeezed leech saliva flows downward along the inner walls of the conical extrusion cylinder 204 and the anti-backflow pipe 205. At the same time, the leeches continue to wriggle downward into the inside of the anti-backflow pipe 205. Because the inner wall of the anti-backflow pipe 205 is provided with an anti-backflow annular groove 2051 that slopes downward, the bodies of the leeches can be limited. That is to say, after the leeches enter the inside of the anti-backflow pipe 205, they cannot wriggle back and can only continue to wriggle downward. During this period, the bodies of the leeches are continuously squeezed by the inner wall of the anti-backflow pipe 205, and the leeches continue to spit out saliva after being pressed. Since the conical extrusion cylinder 204 and the anti-backflow pipe 205 are circularly arranged, when the water droplets move downward, the squeezing of the inner walls of the conical extrusion cylinder 204 and the anti-backflow pipe 205 on the leech bodies is in a surrounding manner, making the force on the leech bodies more uniform and the effect of the leech saliva more ideal. Compared with the existing means, it also avoids the situation that the leeches are easily bruised due to local squeezing.

[0064] Further, specifically refer to Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 as shown in

[0065] The separation part 300 includes a saliva drainage tube 301, a saliva drainage assembly 302, a receiving hopper 303, a mounting hole 304, a collecting hopper 305, a collecting bottle 306, and a saliva receiving groove 307. The saliva drainage tube 301 is located at the bottom of the anti-backflow tube 205. The saliva drainage assembly 302 is fixedly installed at the top of the saliva drainage tube 301. The saliva drainage assembly 302 is arranged in a tower shape, with its diameter gradually increasing downward, and the bottom diameter of the saliva drainage assembly 302 is larger than the inner diameter of the anti-backflow tube 205. The saliva drainage assembly 302 is composed of a plurality of corrugated saliva drainage guide strips 3021 arranged in a circumferential array on the top of the saliva drainage tube 301. The receiving hopper 303 is slidably installed on the inner wall of the outer frame 100. The mounting hole 304 is penetrated through the top of the receiving hopper 303, and the quantity and position correspond to those of the saliva drainage tube 301 one by one. The saliva drainage tube 301 is fixedly installed inside the mounting hole 304 at the corresponding position. The collecting hopper 305 is fixedly installed at the bottom of the mounting hole 304. The collecting bottle 306 is screwed onto the lower part of the outer wall of the collecting hopper 305. The saliva receiving groove 307 is screwed onto the bottom of the outer frame 100, and the inner wall of the saliva receiving groove 307 is slidably connected to the outer wall of the collecting hopper 305. The saliva receiving groove 307 is open at the top and is located at the bottom of a plurality of saliva drainage tubes 301. A shut-off valve 308 is fixedly installed at the bottom output end of the saliva receiving groove 307, and a discharge pipe 309 is fixedly installed at the output end of the shut-off valve 308.

[0066] Specifically, after the leech is squeezed by the inner wall of the anti-backflow tube 205, it spits out saliva. The spit saliva drips along the inner wall of the anti-backflow tube 205 onto the surface of the saliva drainage guide strip 3021. Since the saliva drainage guide strip 3021 is corrugated, the leech saliva fluid attached to the surface of the saliva drainage guide strip 3021 flows downward along the surface of the saliva drainage guide strip 3021 and drips into the inside of the saliva drainage tube 301 at the folds, instead of flowing to the outer wall of the saliva drainage tube 301. Subsequently, it is discharged into the inside of the saliva receiving groove 307 through the inner wall of the saliva drainage tube 301 for collection. The leech that has spit out saliva finally wriggles out from the bottom of the anti-backflow tube 205, and under the action of gravity, it lands on the surface of the saliva drainage assembly 302 and slides along the surface of the saliva drainage assembly 302 into the inside of the receiving hopper 303, and is discharged into the inside of the collecting bottle 306 through the collecting hopper 305 for collection. In this way, after the leech has extracted saliva, the leech can be separated from its saliva.

[0067] Further, specifically referring to Figures 4 to 6 as shown:

[0068] The negative pressure part 400 includes a negative pressure pump housing 401, a diaphragm 402, an electric cylinder 403, a flow guide cover 404, a one-way valve 405, a conical spring 406 and air holes 407. The negative pressure pump housing 401 is fixedly installed on the outer wall of the outer frame 100 and is located around the opening of the negative pressure port 101. The diaphragm 402 is fixedly installed in the middle of the inner wall of the negative pressure pump housing 401. The electric cylinder 403 is fixedly installed on the side of the negative pressure pump housing 401 away from the outer frame 100. The output rod of the electric cylinder 403 extends movably into the negative pressure pump housing 401 and is fixedly connected to the middle of the diaphragm 402. The flow guide cover 404 is fixedly installed on the side of the negative pressure pump housing 401 away from the electric cylinder 403 and is communicated with the inside of the negative pressure pump housing 401. The flow guide cover 404 extends into the negative pressure port 101. The one-way valve 405 is fixedly installed at one end of the bottom of the negative pressure pump housing 401 away from the electric cylinder 403. The one-way valve 405 is communicated with the inside of the negative pressure pump housing 401. The conical spring 406 is sleeved around the output rod of the electric cylinder 403 and is fixedly installed between the side of the diaphragm 402 away from the outer frame 100 and the inner wall of one side of the negative pressure pump housing 401. The air holes 407 are horizontally opened at one end of the outer wall of the negative pressure pump housing 401 close to the electric cylinder 403, and the number is two. The two air holes 407 are symmetrically distributed about the center of the negative pressure pump housing 401.

[0069] Specifically, by starting the electric cylinder 403, its output shaft drives the middle of the diaphragm 402 to move away from the outer frame 100, causing the conical spring 406 to be compressed and store energy. At the same time, it also causes a negative pressure effect inside the negative pressure pump housing 401 and inside the outer frame 100. The one-way valve 405 closes. Due to the negative pressure inside the outer frame 100, a downward suction effect can be generated on the leeches located inside the anti-backflow pipe 205, accelerating the speed of the leeches moving downward along the inner wall of the anti-backflow pipe 205. At the same time, it also prevents the leeches from getting stuck inside the anti-backflow pipe 205. When the middle of the diaphragm 402 moves to the maximum position away from the outer frame 100, the electric cylinder 403 is powered off, and the resilience of the conical spring 406 is released, pushing the diaphragm 402 to reset. At this time, the one-way valve 405 is opened for ventilation, and external air enters the inside of the negative pressure pump housing 401 through the one-way valve 405 and replenishes air to the inside of the outer frame 100 through the flow guide cover 404, preventing the leeches from suffocating and dying.

[0070] Further, specifically refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 10 as shown:

[0071] The shaking part 500 includes a cylinder block 501, a piston 502, a taper rod 503, a main air supply pipe 504, and an air supply manifold 505. The cylinder block 501 is fixedly installed on the inner wall of the outer frame 100 in a circumferential array form and is located between two adjacent negative pressure ports 101. The piston 502 is slidably installed on the inner wall of the cylinder block 501. The taper rod 503 is fixedly installed at the bottom of the piston 502. The bottom of the taper rod 503 is fixedly connected to the top edge of the receiving hopper 303. The main air supply pipe 504 is fixedly installed at the top of the cylinder block 501 and is communicated with the inside of the cylinder block 501. The main air supply pipe 504 penetrates the side wall of the outer frame 100 and extends to its periphery. The air supply manifold 505 is fixedly installed at one end of the main air supply pipe 504 away from the cylinder block 501 and is communicated with the inside of the main air supply pipe 504. The two ends of the air supply manifold 505 are fixedly connected to the ends of two adjacent air holes 407.

[0072] Specifically, during the process that the middle part of the diaphragm 402 moves away from the outer frame 100, the area near the end of the electric cylinder 403 inside the negative pressure pump housing 401 is compressed. The air in this area is pressed into the inside of the cylinder block 501 through the air hole 407, the air supply manifold 505, and the main air supply pipe 504, thereby pushing the piston 502 and the taper rod 503 downward. The downward movement of the taper rod 503 drives the receiving hopper 303 to move downward together. As the middle part of the diaphragm 402 resets, the compressed area near the end of the electric cylinder 403 inside the negative pressure pump housing 401 is restored, and the air injected into the inside of the cylinder block 501 is drawn back into the inside of the negative pressure pump housing 401 through the main air supply pipe 504, the air supply manifold 505, and the air hole 407, resulting in the piston 502 driving the taper rod 503 and the receiving hopper 303 to move upward. That is to say, during the continuous cyclic movement of the diaphragm 402, the receiving hopper 303 shakes up and down, shaking some of the leeches stuck between the top of the receiving hopper 303 and the outer wall of the saliva drainage tube 301 into the inside of the collection hopper 305, and then collecting them inside the collection bottle 306, avoiding the leeches being stuck between the top of the receiving hopper 303 and the outer wall of the saliva drainage tube 301.

[0073] When the device for collecting leech saliva extract in this solution works, it is divided into the following processes:

[0074] Leech saliva extraction: The leeches are placed inside the hopper bin 203. Under the action of gravity, the leeches wriggle through the guiding holes 202 into the inside of the conical extrusion cylinder 204. Since the diameter of the top of the conical extrusion cylinder 204 is larger than that of its bottom, it is convenient for the leeches to wriggle into the inside of the conical extrusion cylinder 204. As the leeches wriggle downward inside the conical extrusion cylinder 204, the inner wall of the conical extrusion cylinder 204 squeezes the leech body and gradually contracts. During this process, the leech saliva can be extruded. The extruded leech saliva flows downward along the inner walls of the conical extrusion cylinder 204 and the anti-backflow pipe 205. At the same time, the leeches continue to wriggle downward into the inside of the anti-backflow pipe 205. And because the anti-backflow ring grooves 2051 inclined downward are provided on the inner wall of the anti-backflow pipe 205, the body of the leech can be limited. That is to say, after the leeches enter the inside of the anti-backflow pipe 205, they cannot wriggle back and can only continue to wriggle downward. During this period, the body of the leeches is continuously squeezed by the inner wall of the anti-backflow pipe 205, and the leeches continue to spit out saliva after being pressed. During this period, the saliva spit out by the leeches drips onto the surface of the saliva drainage guide strip 3021. Since the saliva drainage guide strip 3021 is arranged in a corrugated shape, the leech saliva fluid attached to the surface of the saliva drainage guide strip 3021 flows downward along the surface of the saliva drainage guide strip 3021 and drips into the inside of the saliva drainage pipe 301 at the folds, and will not flow to the outer wall of the saliva drainage pipe 301. Then it is discharged into the inside of the saliva receiving groove 307 through the inner wall of the saliva drainage pipe 301 for collection. And the leeches that have spit out saliva finally wriggle out from the bottom of the anti-backflow pipe 205 and fall on the surface of the saliva drainage assembly 302 under the action of gravity, and slide along the surface of the saliva drainage assembly 302 into the inside of the receiving conical hopper 303, and are discharged into the inside of the collection bottle 306 through the collection hopper 305 for collection. In this way, after the leeches are extracted for saliva, the leeches can be separated from their saliva;

[0075] Assisting the leeches to wriggle: By starting the electric cylinder 403, its output shaft drives the middle part of the diaphragm 402 to move away from the outer frame 100, causing the compression conical spring 406 to store energy, and at the same time causing a negative pressure effect inside the negative pressure pump housing 401 and the inside of the outer frame 100. The one-way valve 405 closes. Due to the negative pressure effect inside the outer frame 100, a downward suction effect can be generated on the leeches located inside the anti-backflow pipe 205, accelerating the speed of the leeches moving downward along the inner wall of the anti-backflow pipe 205, and at the same time preventing the leeches from getting stuck inside the anti-backflow pipe 205. When the middle part of the diaphragm 402 moves away from the outer frame 100 to the maximum position, the electric cylinder 403 is powered off, and the resilience of the conical spring 406 is released, pushing the diaphragm 402 to reset. At this time, the one-way valve 405 is opened for ventilation, and external air enters the inside of the negative pressure pump housing 401 through the one-way valve 405 and supplements air to the inside of the outer frame 100 through the flow guide cover 404 to prevent the leeches from suffocating and dying;

[0076] Auxiliary leech collection: During the process that the middle part of the diaphragm 402 moves away from the outer frame 100, the area near one end of the electric cylinder 403 inside the negative pressure pump housing 401 is compressed. The air in this area is pressed into the inside of the cylinder body 501 through the air holes 407, the air supply manifold 505 and the air supply main pipe 504, so as to push the piston 502 and the taper rod 503 downward. The downward movement of the taper rod 503 drives the receiving hopper 303 to move downward together. As the middle part of the diaphragm 402 resets, the compressed area near one end of the electric cylinder 403 inside the negative pressure pump housing 401 is restored, and the air injected into the inside of the cylinder body 501 is drawn back into the inside of the negative pressure pump housing 401 through the air supply main pipe 504, the air supply manifold 505 and the air holes 407, resulting in the piston 502 driving the taper rod 503 and the receiving hopper 303 to move upward. That is to say, during the continuous cyclic movement of the diaphragm 402, the receiving hopper 303 vibrates up and down, shaking some leeches stuck between the top of the receiving hopper 303 and the outer wall of the saliva drainage tube 301 into the inside of the collection hopper 305, and then collecting them inside the collection bottle 306, avoiding the leeches from being stuck between the top of the receiving hopper 303 and the outer wall of the saliva drainage tube 301.

[0077] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An apparatus for collecting leech saliva extract, characterized in that: Comprising: An outer frame (100), on the outer wall of which four negative pressure ports (101) are penetrated and arranged at equal angles; A saliva extraction part (200), fixedly installed on the top of the outer frame (100) and extending into the interior of the outer frame (100) for collecting leech saliva; A separation part (300), movably installed inside the outer frame (100) and extending to its bottom for collecting leech saliva and leeches; A negative pressure part (400), fixedly installed on the outer wall of the outer frame (100) in a circumferential array for generating negative pressure inside the outer frame (100); A shaking part (500), fixedly installed on the inner wall of the outer frame (100) in a circumferential array for shaking the separation part (300); The saliva extraction part (200) includes: A baffle (201), fixedly installed on the top of the outer frame (100); Guiding holes (202), penetrated through the top of the baffle (201), and the number is multiple; A hopper bin (203), fixedly installed on the top of the baffle (201) and located outside the periphery of the multiple guiding holes (202); A conical extrusion cylinder (204), fixedly installed at the bottom of the baffle (201) and located outside the opening of the guiding hole (202). The top diameter of the conical extrusion cylinder (204) is larger than its bottom diameter, and the diameter of the hopper bin (203) gradually decreases downward; A non-return pipe (205), fixedly installed at the bottom of the conical extrusion cylinder (204) and communicating with the inside of the conical extrusion cylinder (204); The negative pressure part (400) includes: A negative pressure pump housing (401), fixedly installed on the outer wall of the outer frame (100) and located outside the opening of the negative pressure port (101); A diaphragm (402), fixedly installed in the middle of the inner wall of the negative pressure pump housing (401); An electric cylinder (403), fixedly installed on the side of the negative pressure pump housing (401) away from the outer frame (100). The output rod of the electric cylinder (403) extends movably into the interior of the negative pressure pump housing (401) and is fixedly connected to the middle of the diaphragm (402); A flow guide cover (404), fixedly installed on the side of the negative pressure pump housing (401) away from the electric cylinder (403) and communicating with the inside of the negative pressure pump housing (401). The flow guide cover (404) extends into the interior of the negative pressure port (101); The negative pressure part (400) further includes: A one-way valve (405), fixedly installed at one end of the bottom of the negative pressure pump housing (401) away from the electric cylinder (403), and the one-way valve (405) communicates with the inside of the negative pressure pump housing (401); A conical spring (406), sleeved on the periphery of the output rod of the electric cylinder (403) and fixedly installed between the side of the diaphragm (402) away from the outer frame (100) and the inner wall of one side of the negative pressure pump housing (401); Air holes (407), horizontally opened at one end of the outer wall of the negative pressure pump housing (401) close to the electric cylinder (403), and the number is two. The two air holes (407) are symmetrically distributed about the center of the negative pressure pump housing (401).

2. The device for collecting leech saliva extract according to claim 1, wherein: The separation part (300) includes: A saliva drainage tube (301) located at the bottom of the anti-backflow tube (205); A saliva drainage assembly (302) fixedly installed on the top of the saliva drainage tube (301), and the saliva drainage assembly (302) is arranged in a tower shape; A receiving hopper (303) slidably installed on the inner wall of the outer frame (100); Assembly holes (304) are penetrated and opened at the top of the receiving hopper (303), and the number and positions thereof correspond to those of the saliva drainage tubes (301) one by one, and the saliva drainage tubes (301) are fixedly installed inside the assembly holes (304) at corresponding positions; A collecting hopper (305) fixedly installed at the bottom of the assembly hole (304); A collecting bottle (306) is screwed on the lower part of the outer wall of the collecting hopper (305) by threads; A saliva receiving groove (307) is screwed on the bottom of the outer frame (100) by threads, and the inner wall of the saliva receiving groove (307) is slidably connected to the outer wall of the collecting hopper (305).

3. The device for collecting leech saliva extract according to claim 2, wherein: The shaking part (500) includes: A cylinder block (501) fixedly installed on the inner wall of the outer frame (100) in a circumferential array form and located between two adjacent negative pressure ports (101); A piston (502) slidably installed on the inner wall of the cylinder block (501); A push rod (503) fixedly installed at the bottom of the piston (502), and the bottom of the push rod (503) is fixedly connected to the top edge of the receiving hopper (303); An air supply main pipe (504) fixedly installed on the top of the cylinder block (501) and communicated with the inside of the cylinder block (501), and the air supply main pipe (504) penetrates the side wall of the outer frame (100) and extends to its periphery; An air supply manifold (505) fixedly installed at one end of the air supply main pipe (504) away from the cylinder block (501) and communicated with the inside of the air supply main pipe (504), and the two ends of the air supply manifold (505) are fixedly connected to the ends of two adjacent air holes (407).

4. The device for collecting leech saliva extract according to claim 3, wherein: The diameter of the saliva drainage assembly (302) gradually increases downward, and the bottom diameter of the saliva drainage assembly (302) is larger than the inner diameter of the anti-backflow tube (205), and the saliva drainage assembly (302) is composed of a plurality of corrugated saliva drainage guide strips (3021) arranged in a circumferential array on the top of the saliva drainage tube (301).

5. The device for collecting leech saliva extract according to claim 4, wherein: The saliva receiving groove (307) is provided with an open top, and the saliva receiving groove (307) is located at the bottom of a plurality of saliva drainage tubes (301). A shut-off valve (308) is fixedly installed on the bottom output end of the saliva receiving groove (307), and a discharge pipe (309) is fixedly installed at the output end of the shut-off valve (308).

6. The device for collecting leech saliva extract according to claim 5, wherein: A plurality of anti-reverse annular grooves (2051) are equidistantly distributed up and down on the inner wall of the anti-reverse pipe (205), and the cross section of the anti-reverse annular groove (2051) is arranged obliquely downward.

7. A device for collecting leech saliva extract according to claim 6, characterized in that: Four legs (600) are fixedly arranged on the outer wall of the outer frame (100) and are distributed at equal angles.

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