Sewage pathogen concentration device

Abstract

The invention relates to the technical field of pathogen concentration equipment, and particularly discloses a sewage pathogen concentration device which comprises an equipment body and a conical centrifugal cylinder rotationally connected to the interior of the equipment body, and a connecting frame and a connecting frame are arranged on the two sides of the interior of the extending end respectively. A mounting space for mounting a collecting bag is formed between the connecting frame and the connecting frame; fasteners used for fixing the collecting bag are connected to the two sides of the bottom of the positioning frame in a sliding mode, a trigger piece is further connected to the positioning frame in a sliding mode, and the trigger piece and the fasteners are in transmission connection through linkage pieces. When the conical centrifugal barrel rotates, generated centrifugal force drives the trigger part to slide towards the side away from the conical centrifugal barrel, the linkage part drives the two fasteners to abut against the two sides of the collecting bag correspondingly, and therefore the stability of the collecting bag in the working process can be further improved, and the situation that the collecting bag falls off under the action of the centrifugal force is avoided; therefore, the collection operation of the pathogen sample can be smoothly completed.

Description

Technical Field

[0001] The invention relates to the technical field of pathogen concentration equipment, in particular to a sewage pathogen concentration device. Background Art

[0002] With the development of the times, people's living standards are constantly improving, and people's requirements for living environment are getting higher and higher. With the progress of industrialization, the generation of sewage has become inevitable. Therefore, people are paying more and more attention to the treatment of sewage. The process of sewage treatment is to purify the sewage to meet the water quality requirements for discharge into a certain water body or reuse. If the sewage is discharged without meeting the qualified standards, the pathogens in the sewage will pose a hidden danger to the health of external organisms.

[0003] As is known to all, pathogens refer to microorganisms, parasites or other agents (recombinant microorganisms including hybrids or mutants) that can cause diseases in humans, animals and plants. It is a general term for microorganisms and parasites that can cause diseases, among which microorganisms account for the vast majority. Microorganisms can easily enter the human body through human breathing and cause serious diseases.

[0004] In order to facilitate the further treatment or use of sewage pathogens in the later stage, a concentrator will be used. The concentrator in the prior art, such as the Chinese patent with application number 201922140471.3, authorization announcement number CN211255908U, and name of a microbial fermentation concentration device, discloses a microbial fermentation liquid concentration device, including a concentration box, which is a cylindrical barrel structure, with a concentration cylinder inside, an inner baffle horizontally arranged on the inner side of the bottom, a cover body bolted to the top, a discharge pipe penetrating one side of the bottom, a driving motor is arranged at the center of the bottom end of the inner baffle, and a universal ball is evenly arranged at the top of the inner baffle along the outer cylindrical direction, and the output shaft of the driving motor vertically penetrates the inner baffle and is connected to the bottom center of the concentration cylinder. The inner wall of the concentration cylinder in the above patent is fitted with an ultrafiltration membrane, and the driving motor is used to drive the concentration cylinder to rotate, and the fermentation liquid is closely attached to the ultrafiltration membrane by centrifugal force, so as to improve the concentration efficiency and shorten the time required for concentration.

[0005] Another example is a Chinese patent with application number 202111253735.1, authorization announcement number CN11382129B, and name "A microbial culture concentration filtration system". The above patent discloses a microbial culture concentration filtration system, including a shell, a filter assembly is arranged in the shell, and the filter assembly includes a telescopic member, the telescopic member is fixedly installed in the shell and a rotating power member is fixedly installed at its output end, a support member is fixedly installed at the end of the output shaft of the rotating power member, and a mounting member is fixedly installed in the middle of the surface of the support member away from the rotating power member, and a second filter member is fixedly installed in the mounting member. In the above patent, under the action of centrifugal force, the separation speed of water in the culture solution and the like from the microorganisms can be accelerated, the filtration efficiency can be effectively improved, and it is beneficial to the subsequent filtration of the microorganisms, so that multiple filtration of the microorganisms can be achieved, and relatively pure and concentrated microorganisms can be obtained, and the rapid collection of microorganisms can be achieved.

[0006] It is well known that the collection of sewage pathogens is generally produced by centrifugal filtration through an ultrafiltration membrane, and in order to improve the centrifugal efficiency, it is usually chosen to increase the centrifugal time. For this reason, the prior art will choose to add an extension end so that the pathogen sample can stay longer inside the centrifuge barrel, so as to further improve the centrifugal efficiency. In order to facilitate the collection of pathogen samples after centrifugation, it is usually chosen to be provided with a collection structure on the inner side of the extension end. It is well known that the centrifuge barrel will generate a large centrifugal force during the rotation process. In order to prevent the collection structure from flying out under the action of the centrifugal force, it is usually necessary to fix the collection structure on the centrifuge barrel. Although the above-mentioned installation method can improve the stability of the collection structure during installation, and will not make the collection structure unable to accurately collect pathogen samples due to the action of the centrifugal force, it is not convenient to take out the collected pathogen samples after the centrifugal operation is completed, and there are certain shortcomings.

[0007] It can be seen that how to use centrifugal force to fix the collection structure and to easily and quickly remove the concentrated pathogen sample after the centrifugal force disappears is a technical problem that needs to be solved urgently. Summary of the invention

[0008] The object of the present invention is to provide a sewage pathogen concentration device to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sewage pathogen concentration device, comprising an equipment body and a conical centrifugal cylinder rotatably connected to the inside of the equipment body, the conical centrifugal cylinder is fixedly connected to an extension end, and a gathering space is formed inside the extension end; the conical centrifugal cylinder and the extension end are both provided with liquid outlets, and filter membranes are both provided inside the conical centrifugal cylinder and the extension end; a connecting frame and a connecting frame are respectively provided on both sides of the extension end, and an installation space for installing a collection bag is formed between the connecting frame and the connecting frame; a plurality of fixing mechanisms for fixing the collection bag are provided on the connecting frame, and the fixing mechanisms include a positioning frame fixedly connected to the connecting frame, and fasteners for fixing the collection bag are slidably connected on both sides of the bottom of the positioning frame, and a trigger member is also slidably connected to the positioning frame, and the trigger member and the fastener are connected through a linkage member; when the conical centrifugal cylinder rotates, the centrifugal force generated drives the trigger member to slide to the side away from the conical centrifugal cylinder, and the linkage member drives the fastener to fix the collection bag.

[0010] Furthermore, the fastener includes two abutment plates slidably connected to the bottom of the positioning frame, each of the abutment plates is fixedly connected to a connecting rod, and one of the connecting rods is fixedly connected to a fixed plate, and the trigger member is connected to the fastener through the fixed plate; the linkage member includes a linkage rod rotatably connected to the inside of the positioning frame, a linkage gear is installed on the linkage rod, and a linkage rack is fixedly connected to each connecting plate.

[0011] Furthermore, the trigger member includes a trigger rod fixedly connected to the fixed plate, the trigger rod is slidably connected to the extension end, and a gravity ball is fixed on the trigger rod. When the conical centrifugal cylinder rotates, the gravity ball slides toward the side away from the conical centrifugal cylinder, and the abutment plates on both sides of the bottom of the positioning frame are driven by the linkage member to fix the collecting bag; and a reset spring is arranged between the gravity ball and the extension end.

[0012] Furthermore, a secondary fixing piece is provided inside the positioning frame, and a pressure mechanism is provided between the secondary fixing piece and the linkage rod. When the gravity ball slides toward the side close to the extension end, the pressure mechanism drives the secondary fixing piece to fix the collection bag again.

[0013] Furthermore, the secondary fixing part includes a clamping plate slidably connected to the bottom of the positioning frame, each clamping plate is slidably connected to the abutment plate through a sliding rod, and a force block is fixedly connected to each sliding rod; a pressure block is vertically slidably connected to the positioning frame, and the pressure block intermittently abuts against the two force blocks; the pressure mechanism is used to drive the pressure block to slide downward so that the pressure block abuts against the two force blocks, and the clamping plate is driven by the sliding rod to fix the collection bag.

[0014] Furthermore, the pressure mechanism includes a sliding plate vertically slidably connected to the inside of the positioning frame, a driving rack is fixedly connected to the sliding plate, and a driving gear is installed on the linkage rod, and the driving gear is meshed with the driving rack; and a vertical groove is opened on the sliding plate, and the pressure block is slidably connected to the sliding plate by a limit block sliding in the vertical groove; a contact plate is fixedly connected to the inside of the positioning frame, and the contact plate is slidably connected to the sliding plate through the vertical groove, and an extrusion spring is arranged between the contact plate and the limit block; a locking piece is arranged inside the positioning frame, and when the sliding plate drives the pressure block to slide upward after a certain stroke, the locking piece locks the pressure block, and at this moment the extrusion spring is in a force storage state.

[0015] Furthermore, the locking member includes a locking block slidably connected to the inside of the positioning frame, a locking spring is arranged between the locking block and the positioning frame, and a locking groove is provided on the limit block, the elastic force of the locking spring drives the locking block to be clamped in the locking groove to fix the pressure block; and an unlocking member is also arranged on the sliding plate to drive the locking block to slide out of the locking groove; when the sliding plate slides downward, the locking block is driven to slide out of the locking groove by the unlocking member.

[0016] Furthermore, the unlocking member includes a connecting frame installed on the sliding plate, the connecting frame is slidably connected to an unlocking block through a positioning block, and a connecting spring is also provided between the connecting frame and the positioning block; the locking block is provided with a first wedge surface and a second wedge surface, and the unlocking block intermittently abuts against the first wedge surface and the second wedge surface; a clamping unit is also provided between the unlocking block and the connecting frame, and when the unlocking block abuts against the second wedge surface, the unlocking block is clamped on the connecting frame through the clamping unit; the clamping unit includes a sliding rod slidably connected to the inside of the unlocking block, the positioning block is provided with a through groove, the sliding rod is slidably connected to the positioning block through the through groove, and a pressure spring is also provided between the sliding rod and the unlocking block, a locking hole is provided inside the connecting frame, and the sliding rod is intermittently clamped in the locking hole; an unlocking unit for driving the sliding rod to slide out of the locking hole is also provided inside the positioning frame.

[0017] Furthermore, the unlocking unit comprises an unlocking rod fixedly connected to the inside of the positioning frame, an unlocking groove is provided on the sliding rod, and the unlocking rod abuts and cooperates with the unlocking groove.

[0018] Furthermore, a gravity ring is provided at the bottom of the collecting bag, and an abutment unit is provided on the positioning frame, and the trigger rod is transmission-connected with the abutment unit; when the conical centrifugal cylinder rotates, the gravity ball slides toward the side away from the conical centrifugal cylinder, driving the abutment unit to abut against the gravity ring, thereby preventing the collecting bag from being deformed under the action of centrifugal force.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: during the actual use of the sewage pathogen concentration device, the collection bag is first installed between the connecting frame and the connecting frame, and the collection bag is limited by fasteners to prevent the collection bag from falling off. Then, the power motor shaft is started to rotate, and the conical centrifugal barrel is driven to rotate by the power shaft. When the conical centrifugal barrel rotates, the centrifugal force generated drives the trigger member to slide to the side away from the conical centrifugal barrel, and the two fasteners are driven by the linkage member to abut against the two sides of the collection bag respectively, thereby further improving the stability of the collection bag during operation, and preventing the collection bag from falling off under the action of centrifugal force, so that the collection of pathogen samples can be successfully completed. In the above operation process, the centrifugal force generated by the rotation of the conical centrifugal barrel is completely utilized to fix the collection bag through the cooperation between the trigger member and the fasteners, and there is no need to set up a complex structure to fix the collection bag separately. In the above working process, when the centrifugal force is greater, the collection bag will be more firmly fixed, which meets the work needs.

[0020] When the conical centrifuge cylinder stops rotating, the centrifugal force of the conical centrifuge cylinder gradually decreases from large to small until it disappears. At this moment, the fastener releases the fixation of the collection bag, and it is convenient to remove the collection bag from the connecting frame and the connecting frame, which greatly improves the collection efficiency of the concentration device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the overall structure from another perspective provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a conical centrifugal cylinder provided in an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a partial cross-sectional structure of a conical centrifugal cylinder provided in an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the extension end structure provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of the installation method of multiple sets of fixing mechanisms provided in an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the installation method of the positioning frame and the collection bag provided in an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the connection between the interior of the positioning frame and the collection bag provided in an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of a trigger member provided in an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of a partial structure of a linkage member provided in an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of the structure of the installation method of the secondary fixing member provided in an embodiment of the present invention;

[0033] Fig.12 A schematic diagram of a partial structure of a pressure-applying mechanism provided in an embodiment of the present invention;

[0034] Fig.13 A schematic diagram of the structure in which the locking member provided by an embodiment of the present invention is clamped in the locking groove;

[0035] Fig.14 A schematic diagram of the structure of the unlocking member installation method provided in an embodiment of the present invention;

[0036] Fig.15 A schematic diagram of a partial structure of an unlocking member provided in an embodiment of the present invention;

[0037] Fig.16 A schematic diagram of the structure of the unlocking block and the connection installation method provided in an embodiment of the present invention;

[0038] Fig.17 A schematic diagram of an explosion state of a card connection unit provided in an embodiment of the present invention;

[0039] Fig.18 A schematic diagram of another viewing angle of the exploded state of the card connection unit provided by an embodiment of the present invention;

[0040] Fig.19 A schematic diagram of the unlocking block structure provided by an embodiment of the present invention;

[0041] Fig. 20 A schematic diagram of the unlocking lever structure provided by an embodiment of the present invention;

[0042] Fig.21 A cross-sectional view of a collecting bag provided by an embodiment of the present invention, a connecting frame and a connecting frame when separated;

[0043] Fig. 22 A schematic diagram of the local structure of an abutment unit provided in an embodiment of the present invention.

[0044] Description of reference numerals: 1. Equipment body; 2. Conical centrifugal cylinder; 3. Discharge channel; 4. Power shaft; 5. Extension end; 6. Connecting frame; 7. Connecting frame; 8. Collecting bag; 9. Positioning frame; 10. Trigger; 101. Trigger rod; 102. Gravity ball; 103. Return spring; 11. Fastener; 111. Abutment plate; 112. Connecting rod; 113. Fixing plate; 12. Linkage member; 121. Linkage rod; 122. Linkage gear; 123. Linkage rack; 13. Secondary fixing member; 131, abutting plate; 132, sliding rod; 133, force block; 134, pressure block; 135, positioning spring; 14, pressure mechanism; 141, sliding plate; 142, driving gear; 143, driving rack; 144, vertical groove; 145, limit block; 146, extrusion spring; 147, contact plate; 15, locking member; 151, locking block; 152, locking groove; 153, locking spring; 16, unlocking member; 161, connecting frame; 162, unlocking block; 163, connecting spring;

[0045] 164, positioning block; 165, through slot; 166, slide bar; 167, pressure spring; 168, locking hole;

[0046] 169, first wedge-shaped surface; 1610, second wedge-shaped surface; 17, unlocking unit; 171, unlocking rod;

[0047] 172. unlocking slot; 18. gravity ring; 19. protrusion; 20. guide plate; 21. power block; 22. guide unit. DETAILED DESCRIPTION

[0048] 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.

[0049] See also Figure 1-Figure 22The present invention provides a technical solution: a sewage pathogen concentration device, which includes an equipment body 1 and a conical centrifuge cylinder 2 rotatably connected to the inside of the equipment body 1. A drainage channel 3 is provided on the equipment body 1, and a valve is provided on the drainage channel 3 for discharging the liquid inside the equipment body 1. Specifically, a power motor is provided at the bottom of the equipment body 1, and the power motor is connected to the conical centrifuge cylinder 2 through a power shaft 4. In use, the sewage sample after mixing is poured into the conical centrifuge cylinder 2. When in use, the power motor is started, the power motor shaft rotates, and the conical centrifuge cylinder 2 is driven to rotate through the power shaft 4, so that the centrifugal concentration operation of the sewage sample inside the conical centrifuge cylinder 2 can be realized, and when the conical centrifuge cylinder 2 rotates, under the action of centrifugal force, the pathogens in the sewage sample will move obliquely upward along the conical centrifuge cylinder 2, thereby increasing the centrifugation time and improving the centrifugation efficiency.

[0050] The conical centrifugal cylinder 2 is fixedly connected with an extension end 5, and a gathering space is formed inside the extension end 5. Preferably, the gathering space is in an arc shape, so the pathogen sample will move obliquely upward from the conical centrifugal cylinder 2 to the gathering space inside the extension end 5, thereby further increasing the centrifugation time. Therefore, within the given time when the power shaft 4 drives the conical centrifugal cylinder 2 to rotate, the pathogen sample will stay in the conical centrifugal cylinder 2 and the extension end 5 for a longer time, thereby improving the efficiency of centrifugal concentration.

[0051] The conical centrifugal cylinder 2 and the extension end 5 are both provided with liquid outlet holes, and the conical centrifugal cylinder 2 and the extension end 5 are both provided with filter membranes inside. Specifically, the filter membranes may be ultrafiltration membranes, etc., which are prior art and their structures are not described here. At this moment, when the conical centrifugal cylinder 2 rotates, the sewage liquid will be discharged through the filter membrane and the liquid outlet holes, and the filter membrane will filter the concentrated pathogen sample.

[0052] The two sides of the extension end 5 are provided with a connecting frame 6 and a connecting frame 7, respectively, and an installation space for installing a collection bag 8 is formed between the connecting frame 6 and the connecting frame 7, wherein the collection bag 8 is located below the gathering space, so after the pathogen sample is concentrated and accumulated, it will fall into the collection bag 8 due to gravity, thereby realizing the collection operation of the pathogen sample. Specifically, the collection bag 8 can be made of a variety of flexible materials, so that the collection bag 8 can be more conveniently installed between the connecting frame 6 and the connecting frame 7, thereby improving the working efficiency of the concentration device.

[0053] In addition, a plurality of fixing mechanisms for fixing the collecting bag 8 are arranged on the connecting frame 6, wherein the structures and working principles of the plurality of fixing mechanisms are consistent, and only one is described in detail herein. Specifically, the fixing mechanism comprises a positioning frame 9 fixedly connected to the connecting frame 6, and fasteners 11 for fixing the collecting bag 8 are slidably connected on both sides of the bottom of the positioning frame 9, and the two fasteners 11 are respectively abutted against the two sides of the collecting bag 8, thereby further improving the stability of the collecting bag 8 during operation and preventing the collecting bag 8 from falling off under the action of centrifugal force. In addition, a trigger member 10 is slidably connected to the positioning frame 9, and the trigger member 10 is slidably connected to the extension end 5. When the conical centrifugal cylinder 2 rotates, the trigger member 10 is driven to slide to the side away from the extension end 5 under the action of centrifugal force. The trigger member 10 and the fastener 11 are connected by a linkage member 12, and the linkage member 12 drives the fastener 11 to fix the collecting bag 8.

[0054] Specifically, in actual use, the collection bag 8 is first installed between the connecting frame 6 and the connecting frame 7, and the collection bag 8 is limited by the fastener 11 to prevent the collection bag 8 from falling off. Then, the power motor shaft is started to rotate, and the conical centrifugal cylinder 2 is driven to rotate by the power shaft 4. When the conical centrifugal cylinder 2 rotates, the centrifugal force generated drives the trigger 10 to slide to the side away from the conical centrifugal cylinder 2, and the two fasteners 11 are driven by the linkage 12 to abut against the two sides of the collection bag 8, so that the stability of the collection bag 8 during operation can be further improved, and the collection bag 8 can be prevented from falling off under the action of centrifugal force, so that the collection operation of the pathogen sample can be successfully completed. In the above operation process, the centrifugal force generated when the conical centrifugal cylinder 2 rotates is completely used to fix the collection bag 8 through the cooperation between the trigger 10 and the fastener 11, etc., without the need to set up a complex structure to fix the collection bag 8 separately. In the above working process, when the centrifugal force is greater, the fixation of the collection bag 8 will be more stable, which meets the work needs. At this moment, when the conical centrifuge cylinder 2 stops rotating, the centrifugal force of the conical centrifuge cylinder 2 gradually decreases from large to small until it disappears. At this moment, the fastener 11 releases the fixation of the collecting bag 8, making it convenient to remove the collecting bag 8 from the connecting frame 6 and the connecting frame 7, thereby greatly improving the collection efficiency of the concentrating device.

[0055] In the embodiment provided by the present invention, the fastener 11 includes two abutment plates 111 slidably connected to the bottom of the positioning frame 9. Specifically, the shape of the abutment plates 111 is adapted to the shape of the connecting frame 6 and the connecting frame 7, so that the collection bag 8 can be more conveniently fixed. Each abutment plate 111 is fixedly connected to a connecting rod 112, and one of the connecting rods 112 is fixedly connected to a fixing plate 113, and the trigger member 10 is connected to the fastener 11 through the fixing plate 113. More specifically, a plurality of sets of adapter grooves are provided at the bottom of the positioning frame 9 to facilitate the sliding of the abutment plates 111. The linkage member 12 includes a linkage rod 121 rotatably connected to the inside of the positioning frame 9, a linkage gear 122 is installed on the linkage rod 121, and a linkage rack 123 is fixedly connected to each connecting plate, the trigger member 10 includes a trigger rod 101 fixedly connected to the fixed plate 113, the trigger rod 101 is slidably connected to the extension end 5, and a gravity ball 102 is fixed to the trigger rod 101. When the conical centrifugal cylinder 2 rotates, the gravity ball 102 slides toward the side away from the conical centrifugal cylinder 2, and the abutment plates 111 on both sides of the bottom of the positioning frame 9 are driven by the linkage member 12 to fix the collecting bag 8. Specifically, in actual use, when the conical centrifuge barrel 2 rotates, centrifugal force will be generated. When the centrifugal force generated when the conical centrifuge barrel 2 rotates is greater than other forces of the gravity ball 102, the gravity ball 102 will slide to the side away from the extension end 5. When the gravity ball 102 slides on the side of the extension end 5, it will drive the fixing plate 113 to slide through the trigger rod 101. At this moment, the fixing plate 113 will drive the linkage rack 123 to slide inside the positioning frame 9 during the sliding stroke. Under the action of the linkage gear 122, the other linkage rack 123 will also slide inside the positioning frame 9. Therefore, the two linkage racks 123 can respectively drive the abutment plate 111 to fix the collection bag 8, thereby further improving the stability of the collection bag 8 during operation and preventing the collection bag 8 from falling off under the action of centrifugal force, thereby successfully completing the collection operation of the pathogen sample. In the above operation process, the centrifugal force generated by the rotation of the conical centrifugal barrel 2 is completely utilized to fix the collection bag 8 through the cooperation between the trigger member 10 and the fastener 11, etc., without the need to set up a complex structure to fix the collection bag 8 separately.

[0056] At the same time, a return spring 103 is arranged between the gravity ball 102 and the extension end 5. Specifically, the elastic force of the return spring 103 drives the gravity ball 102 to slide toward the side close to the extension end 5. When the centrifugal force generated when the conical centrifugal cylinder 2 rotates is greater than the elastic force of the return spring 103, the gravity ball 102 will slide toward the side away from the extension end 5. On the contrary, when the power motor stops, the centrifugal force generated when the conical centrifugal cylinder 2 rotates will decrease from large to small. At this time, the return spring 103 drives the gravity ball 102 to slide toward the side close to the extension end 5 in the process of restoring elastic deformation. In this process, the two abutment plates 111 can be driven to release the fixation of the collection bag 8 through the cooperation of the connecting rack and the linkage gear 122, which makes it convenient to remove the collection bag 8 from the connecting frame 6 and the connecting frame 7, greatly improving the collection efficiency of the concentration device and achieving better use effect.

[0057] Specifically, when the power motor stops, the centrifugal force generated by the rotation of the conical centrifugal cylinder 2 will begin to decrease, and the gravity ball 102 will tend to slide toward the extension end 5, that is, the fastener 11 will gradually release the restriction on the collection bag 8. However, the centrifugal force generated by the rotation of the conical centrifugal cylinder 2 at this time still has the possibility of throwing the collection bag 8 away.

[0058] Therefore, in another embodiment provided by the present invention, a secondary fixing member 13 is further provided inside the positioning frame 9, and a pressure mechanism 14 is provided between the secondary fixing member 13 and the linkage rod 121. When the gravity ball 102 slides toward the side close to the extension end 5, the pressure mechanism 14 drives the secondary fixing member 13 to fix the collection bag 8 again. That is, after the power motor stops and the speed of the conical centrifugal drum 2 decreases, the gravity ball 102 will drive the secondary fixing member 13 to fix the collection bag 8 again during the sliding stroke toward the side close to the extension end 5, which can avoid the situation where the collection bag 8 is thrown away due to the weakening of the force of the fastener 11 on the collection bag 8, and the use effect is better.

[0059] In the embodiment provided by the present invention, the secondary fixing member 13 includes a clamping plate 131 slidably connected to the bottom of the positioning frame 9, each clamping plate 131 is slidably connected to the abutting plate 111 through a sliding rod 132, and specifically, a positioning spring 135 is provided between each clamping plate 131 and its corresponding abutting plate 111, and the elastic force of the positioning spring 135 drives the clamping plate 131 and the abutting plate 111 to move away from each other, so that when the conical centrifugal cylinder 2 is in a stationary state, the abutting plate 111 is in a stationary state at this moment, and the elastic force of the positioning spring 135 drives the clamping plate 131 to contact the collecting bag 8, and at this moment, the collecting bag 8 can be installed between the connecting frame 7 and the connecting frame 6 when the conical centrifugal cylinder 2 is in a stationary state, which can improve the stability of the collecting bag 8 during installation and prevent the collecting bag 8 from slipping during installation. And each sliding rod 132 is fixedly connected to a force block 133, and a pressure block 134 is vertically slidably connected to the positioning frame 9, and the pressure block 134 intermittently abuts against the two force blocks 133. When the pressure block 134 slides downward and abuts against the two force blocks 133, the collection bag 8 can be fixed by the abutting plate 131. The pressure mechanism 14 is used to drive the pressure block 134 to slide downward so that the pressure block 134 abuts against the two force blocks 133, and the sliding rod 132 drives the abutting plate 131 to fix the collection bag 8.

[0060] Specifically, the secondary fixing member 13 will have two working states when working:

[0061] First, when the conical centrifugal barrel 2 is in a stationary state, the abutment plate 111 is in a stationary state, and the elastic force of the positioning spring 135 drives the abutment plate 131 to contact the collecting bag 8, which can improve the stability of the collecting bag 8 during installation and prevent the collecting bag 8 from slipping during installation. During the rotation of the conical centrifugal barrel 2, the gravity ball 102 will slide to the side away from the extension end 5. When the gravity ball 102 slides on the side of the extension end 5, it will drive the fixing plate 113 to slide through the trigger rod 101. At this moment, the fixing plate 113 will drive the linkage rack 123 to slide inside the positioning frame 9 during the sliding stroke. Under the action of the linkage gear 122, the other linkage rack 123 will also slide inside the positioning frame 9. Therefore, the two linkage racks 123 can respectively drive the abutment plate 111 to fix the collecting bag 8. In this process, when the abutment plate 111 is acted upon by the linkage rack 123, it will squeeze the positioning spring 135, and the positioning spring 135 will drive the clamping plate 131 to contact the collecting bag 8, and the collecting bag 8 will be fixed by the clamping plate 131, thereby improving the stability of the collecting bag 8 during operation.

[0062] Second, when the power motor stops, the gravity ball 102 slides toward the extension end 5 under the action of the return spring 103 and the like, and the abutment plate 111 is driven by the linkage member 12 and the like to reduce the restricting force on the clamping plate 131 (that is, the squeezing force on the collecting bag 8 is reduced). During the sliding stroke of the gravity ball 102 toward the extension end 5, the pressure block 134 is driven to slide downward through the pressure mechanism 14. When the pressure block 134 slides downward and abuts against the two force blocks 133, the collecting bag 8 can be fixed again through the clamping plate 131, thereby avoiding the risk of the collecting bag 8 falling off due to the reduction of the squeezing force on the collecting bag 8, thereby meeting the working needs.

[0063] In the embodiment provided by the present invention, the pressure mechanism 14 includes a sliding plate 141 vertically slidably connected to the interior of the positioning frame 9. Specifically, a sliding groove adapted to the sliding plate 141 is provided inside the positioning frame 9, which can improve the stability of the sliding plate 141 when sliding. A driving rack 143 is fixedly connected to the sliding plate 141, and a driving gear 142 is installed on the linkage rod 121. The driving gear 142 is meshed with the driving rack 143. Therefore, when the linkage rod 121 rotates, the sliding plate 141 is driven to slide through the cooperation of the driving gear 142 and the driving rack 143. At this moment, when the conical centrifugal cylinder 2 rotates, centrifugal force will be generated. When the centrifugal force generated when the conical centrifugal cylinder 2 rotates is greater than other forces of the gravity ball 102, the gravity ball 102 will slide to the side away from the extension end 5. When the gravity ball 102 slides on the side of the extension end 5, it will drive the fixed plate 113 to slide through the trigger rod 101. At this moment, the fixed plate 113 will drive the linkage rack 123 to slide inside the positioning frame 9 during the sliding stroke. At this moment, the linkage rod 121 will be driven to rotate passively through the linkage gear 122. When the linkage rod 121 rotates, the cooperation of the driving gear 142 and the driving rack 143 drives the sliding plate 141 to slide upward. The sliding plate 141 is provided with a vertical slot 144, and the pressure block 134 is slidably connected to the sliding plate 141 by means of a limit block 145 sliding inside the vertical slot 144. A contact plate 147 is fixedly connected inside the positioning frame 9, and the contact plate 147 is slidably connected to the sliding plate 141 through the vertical slot 144. An extrusion spring 146 is arranged between the contact plate 147 and the limit block 145. Therefore, when the sliding plate 141 slides upward, the sliding plate 141 drives the limit block 145 to slide upward inside the vertical slot 144. Since the contact plate 147 is in a stationary state, the extrusion spring 146 will be deformed when the sliding plate 141 slides upward at this moment. At the same time, a locking member 15 is arranged inside the positioning frame 9. When the sliding plate 141 drives the pressure block 134 to slide upward for a certain stroke, the locking member 15 locks the pressure block 134, and at this moment, the extrusion spring 146 is in a state of storing force. At this moment, if the pressure block 134 is unlocked, the extrusion spring 146 will restore its elastic deformation and drive the pressure block 134 to slide downward quickly. After the pressure block 134 slides downward and abuts against the two force blocks 133, the collecting bag 8 can be fixed again by the clamping plate 131, avoiding the risk of the collecting bag 8 falling off due to the reduction of the extrusion force on the collecting bag 8, thereby meeting work needs.

[0064] In the embodiment provided by the present invention, specifically, the locking member 15 includes a locking block 151 slidably connected to the interior of the positioning frame 9, and the locking block 151 is provided with an abutting surface, and the abutting surface is wedge-shaped, which is convenient for fixing the pressure block 134. A locking spring 153 is provided between the locking block 151 and the positioning frame 9. Preferably, a telescopic rod is provided inside the positioning frame 9, wherein the locking spring 153 is installed inside the telescopic rod, so as to improve the stability of the locking block 151 when sliding. A locking groove 152 is provided on the limit block 145, and the elastic force of the locking spring 153 drives the locking block 151 to be clamped in the locking groove 152 to fix the pressure block 134. Specifically, when the gravity ball 102 slides on one side of the extension end 5, the fixing plate 113 is driven to slide through the trigger rod 101. At this moment, the fixing plate 113 drives the linkage rack 123 to slide inside the positioning frame 9 during the sliding stroke. At this moment, the linkage rod 121 is driven to rotate passively through the linkage gear 122. When the linkage rod 121 rotates, the driving gear 142 cooperates with the driving rack 143 to drive the sliding plate 141 to slide upward. Therefore, when the sliding plate 141 slides upward, the sliding plate 141 drives the limit block 145 to slide upward inside the vertical slot 144. Since the contact plate 147 is in a stationary state, when the sliding plate 141 slides upward to a predetermined position, the limit block 145 squeezes the locking block 151, so that the locking block 151 overcomes the elastic force of the locking spring 153 and is driven inside the positioning frame 9, until the locking groove 152 on the limit block 145 slides to the position of the locking block 151, the locking spring 153 restores the elastic deformation process to drive the locking block 151 to be clamped in the locking groove 152, fix the limit block 145, and the squeezing spring 146 is deformed during the upward sliding stroke of the sliding plate 141. Specifically, the elastic coefficient of the squeezing spring 146 is greater than the elastic coefficient of the locking spring 153, so when the limit block 145 slides upward, it can overcome the elastic force of the locking spring 153, so that the locking block 151 slides inside the positioning frame 9.

[0065] In this embodiment, the sliding plate 141 is also provided with an unlocking member 16 for driving the locking block 151 to slide out of the locking groove 152, and can passively slide the locking block 151 out of the locking groove 152 when the sliding plate 141 slides downward. In actual use, when the sliding plate 141 slides downward, the locking block 151 is driven to slide out of the locking groove 152 by the unlocking member 16. That is, after the extrusion spring 146 is released from restriction, the extrusion spring 146 will restore the elastic deformation and drive the pressure block 134 to slide downward quickly. After the pressure block 134 slides downward and abuts against the two force blocks 133, the collection bag 8 can be fixed again by the abutting plate 131, and the use effect is better.

[0066] In the embodiment provided by the present invention, the unlocking member 16 includes a connecting frame 161 installed on the sliding plate 141. When the sliding plate 141 slides upward, the connecting frame 161 will be driven to slide upward together. The connecting frame 161 is slidably connected to an unlocking block 162 through a positioning block 164. A connecting spring 163 is also provided between the connecting frame 161 and the positioning block 164. The elastic force of the connecting spring 163 drives the unlocking block 162 to a predetermined state. The locking block 151 is provided with a first wedge surface 169 and a second wedge surface 1610, and the unlocking block 162 intermittently abuts against the first wedge surface 169 and the second wedge surface 1610. Specifically, the locking block 151 is provided with an inclined groove, and the first wedge surface 169 and the second wedge surface 1610 are respectively located on both sides of the inclined groove. A clamping unit is further provided between the unlocking block 162 and the connecting frame 161. When the unlocking block 162 abuts against the second wedge surface 1610, the unlocking block 162 is clamped on the connecting frame 161 through the clamping unit. When the clamping unit is clamped on the connecting frame 161, when the connecting frame 161 slides downward, the unlocking block 162 is driven to slide downward together, and the locking block 151 is driven to slide out of the locking groove 152 in cooperation with the second wedge surface 1610. When the clamping unit is not clamped on the connecting frame 161, the unlocking block 162 is slidably connected with the connecting frame 161. If the unlocking block 162 is driven to abut against the second wedge surface 1610 at this moment, the locking block 151 cannot be driven to slide out of the locking groove 152 where it is located. The card-connecting unit includes a slide rod 166 slidably connected to the inside of the unlocking block 162, a through slot 165 is provided on the positioning block 164, the slide rod 166 is slidably connected to the positioning block 164 through the through slot 165, and a pressure spring 167 is also provided between the slide rod 166 and the unlocking block 162, a locking hole 168 is provided inside the connecting frame 161, and the slide rod 166 is intermittently carded in the locking hole 168. When the slide rod 166 is carded in the locking hole 168, the state of the unlocking block 162 can be fixed, and the unlocking block 162 can no longer slide inside the connecting frame 161. Specifically, during use, when the sliding plate 141 slides upward for a certain distance, the unlocking block 162 at this moment will slide inside the inclined groove on the locking block 151. More specifically, the unlocking block 162 will abut against the first wedge surface 169. As the sliding plate 141 continues to slide upward, the unlocking block 162 will slide on the connecting frame 161 under the wedge action of the first wedge surface 169. When the unlocking block 162 slides, it will drive the unlocking block 162 to slide inside the connecting frame 161, causing the connecting spring 163 to deform, that is, the connecting spring 163 generates elastic force. When the sliding plate 141 slides upward to a predetermined position, the unlocking block 162 moves to contact the second wedge surface 1610 at this moment, and the pressure spring 167 drives the clamping rod to clamp into the locking hole 168.In this state, when the sliding plate 141 slides downward, the locking block 151 is driven to slide out from the locking groove 152 through the cooperation between the unlocking block 162 and the second wedge surface 1610, that is, after the extrusion spring 146 releases the restriction, the extrusion spring 146 will restore the elastic deformation and drive the pressure block 134 to slide downward quickly. After the pressure block 134 slides downward and abuts against the two force blocks 133, the collection bag 8 can be fixed again by the clamping plate 131, and the use effect is better.

[0067] Specifically, the positioning frame 9 is further provided with an unlocking unit 17 for driving the slide bar 166 to slide out of the locking hole 168. By providing the unlocking unit 17, the clamping rod can slide out of the locking hole 168, that is, the unlocking block 162 is unlocked to avoid motion interference when the sliding plate 141 slides upward, and it is convenient to drive the locking block 151 to slide out of the locking groove 152 next time. Specifically, the unlocking unit 17 includes an unlocking rod 171 fixedly connected to the positioning frame 9, and the sliding rod 132 is provided with an unlocking groove 172, and the unlocking rod 171 is in abutment with the unlocking groove 172. The unlocking slot 172 and the unlocking rod 171 are both wedge-shaped. When the sliding plate 141 slides downward to a predetermined position, the unlocking slot 172 contacts the unlocking rod 171, driving the clamping rod to slide to the side away from the locking hole 168, driving the clamping rod to slide out of the locking hole 168, and then the elastic force of the connecting spring 163 drives the unlocking block 162 to drive the clamping rod to slide inside the connecting frame 161, so as to facilitate the subsequent driving of the unlocking block 162 to abut against the first wedge surface 169, and the cycle repeats.

[0068] In the embodiment provided by the present invention, a gravity ring 18 is further provided at the bottom of the collecting bag 8, an abutment unit is further provided on the positioning frame 9, and the trigger rod 101 is transmission-connected with the abutment unit; when the conical centrifugal cylinder 2 rotates, the gravity ball 102 slides toward the side away from the conical centrifugal cylinder 2, driving the abutment unit to abut against the gravity ring 18, thereby preventing the collecting bag 8 from being deformed under the action of centrifugal force. Specifically, the abutment unit includes a guide plate 20 slidably connected to the positioning frame 9, and a guide unit 22 is provided between the guide plate 20 and the positioning frame 9, a power block 21 is fixedly connected to the trigger rod 101, and an arc groove matching the power block 21 is provided on the guide plate 20, and a protrusion 19 is fixedly connected to the gravity ring 18. During use, when the gravity ball 102 slides, it will drive the trigger rod 101 to slide, and the power block 21 will drive the guide plate 20 to slide and abut against the protrusion 19. At this moment, accumulation at the bottom of the collection bag 8 can be avoided, thereby facilitating the discharge of the collected pathogen samples and achieving better use effect.

[0069] In the embodiment provided by the present invention, the cross-sections of the connecting frame 7 and the connecting frame 6 are conical. At this moment, when the collecting bag 8 is installed between the connecting frame 7 and the connecting frame 6, the cross-section of the collecting bag 8 is also conical, so as to prevent the pathogen sample inside the collecting bag 8 from being thrown out under the action of centrifugal force.

[0070] Furthermore, Velcro is provided on both sides of the inside of the collection bag 8, specifically, a mother-and-child sticker. Therefore, when the collection bag 8 passes through the connecting frame 7 and the connecting frame 6, the Velcro can stick the bag mouth of the collection bag 8 together, which can play the role of temporarily storing pathogen samples and achieve better use effect.

[0071] It should be noted that the electrical equipment involved in this application can be powered by batteries or external power supply.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sewage pathogen concentration device, comprising a device body (1) and a conical centrifugal cylinder (2) rotatably connected to the inside of the device body (1), characterized in that: An extension end (5) is fixedly connected to the conical centrifugal cylinder (2), and a gathering space is formed inside the extension end (5); The conical centrifugal cylinder (2) and the extension end (5) are both provided with liquid outlet holes, and the inner sides of the conical centrifugal cylinder (2) and the extension end (5) are both provided with filter membranes; A connecting frame (6) and a connecting frame (7) are respectively arranged on both sides of the interior of the extension end (5), and an installation space for installing a collection bag (8) is formed between the connecting frame (6) and the connecting frame (7); The connecting frame (6) is provided with a plurality of fixing mechanisms for fixing the collecting bag (8), the fixing mechanisms comprising a positioning frame (9) fixedly connected to the connecting frame (6), and fasteners (11) for fixing the collecting bag (8) are slidably connected on both sides of the bottom of the positioning frame (9), and a trigger member (10) is also slidably connected to the positioning frame (9), and the trigger member (10) and the fastener (11) are transmission-connected via a linkage member (12); When the conical centrifugal cylinder (2) rotates, the centrifugal force generated drives the trigger member (10) to slide toward a side away from the conical centrifugal cylinder (2), and drives the fastener (11) to fix the collection bag (8) through the linkage member (12).

2. A sewage pathogen concentration device according to claim 1, characterized in that: The fastener (11) comprises two abutment plates (111) slidably connected to the bottom of the positioning frame (9), each of the abutment plates (111) is fixedly connected to a connecting rod (112), and one of the connecting rods (112) is fixedly connected to a fixing plate (113), and the trigger member (10) is connected to the fastener (11) via the fixing plate (113); The linkage member (12) comprises a linkage rod (121) rotatably connected inside the positioning frame (9), a linkage gear (122) is mounted on the linkage rod (121), and each connecting plate is fixedly connected with a linkage rack (123).

3. A sewage pathogen concentration device according to claim 2, characterized in that: The trigger member (10) comprises a trigger rod (101) fixedly connected to a fixing plate (113), the trigger rod (101) being slidably connected to the extension end (5), and a gravity ball (102) being fixed to the trigger rod (101); When the conical centrifugal cylinder (2) rotates, the gravity ball (102) slides toward the side away from the conical centrifugal cylinder (2), and the abutment plates (111) on both sides of the bottom of the positioning frame (9) are driven by the linkage member (12) to fix the collection bag (8), and a return spring (103) is provided between the gravity ball (102) and the extension end (5).

4. A sewage pathogen concentration device according to claim 3, characterized in that: A secondary fixing member (13) is also provided inside the positioning frame (9), and a pressure mechanism (14) is provided between the secondary fixing member (13) and the linkage rod (121); When the gravity ball (102) slides toward the side close to the extension end (5), the pressure mechanism (14) drives the secondary fixing member (13) to fix the collection bag (8) again.

5. A sewage pathogen concentration device according to claim 4, characterized in that: The secondary fixing member (13) comprises a clamping plate (131) slidably connected to the bottom of the positioning frame (9), each clamping plate (131) is slidably connected to the abutment plate (111) via a sliding rod (132), and each sliding rod (132) is fixedly connected to a force block (133); A pressure block (134) is vertically slidably connected to the positioning frame (9), and the pressure block (134) is intermittently abutted against the two force-bearing blocks (133); The pressure mechanism (14) is used to drive the pressure block (134) to slide downward so that the pressure block (134) abuts against the two force-bearing blocks (133), and the abutting plate (131) is driven by the sliding rod (132) to fix the collecting bag (8).

6. The sewage pathogen concentration device according to claim 5, characterized in that: The pressure mechanism (14) comprises a sliding plate (141) vertically slidably connected inside the positioning frame (9), a driving rack (143) is fixedly connected to the sliding plate (141), and a driving gear (142) is installed on the linkage rod (121), and the driving gear (142) is meshed with the driving rack (143); A vertical groove (144) is provided on the sliding plate (141), and the pressure block (134) is slidably connected to the sliding plate (141) by sliding a limit block (145) inside the vertical groove (144); a contact plate (147) is fixedly connected inside the positioning frame (9), and the contact plate (147) is slidably connected to the sliding plate (141) through the vertical groove (144); and a compression spring (146) is provided between the contact plate (147) and the limit block (145); A locking member (15) is provided inside the positioning frame (9). When the sliding plate (141) drives the pressure block (134) to slide upward for a certain distance, the locking member (15) locks the pressure block (134). At this moment, the extrusion spring (146) is in a force storage state.

7. The sewage pathogen concentration device according to claim 6, characterized in that: The locking member (15) comprises a locking block (151) slidably connected to the interior of the positioning frame (9), a locking spring (153) is arranged between the locking block (151) and the positioning frame (9), and a locking groove (152) is provided on the limit block (145), and the elastic force of the locking spring (153) drives the locking block (151) to be clamped in the locking groove (152) to fix the pressure block (134); The sliding plate (141) is also provided with an unlocking member (16) for driving the locking block (151) to slide out from the locking groove (152); When the sliding plate (141) slides downward, the locking block (151) is driven to slide out from the inside of the locking groove (152) by the unlocking member (16).

8. The sewage pathogen concentration device according to claim 7, characterized in that: The unlocking member (16) comprises a connecting frame (161) mounted on the sliding plate (141); the connecting frame (161) is slidably connected to an unlocking block (162) via a positioning block (164); and a connecting spring (163) is further provided between the connecting frame (161) and the positioning block (164); The locking block (151) is provided with a first wedge-shaped surface (169) and a second wedge-shaped surface (1610), and the unlocking block (162) intermittently abuts against the first wedge-shaped surface (169) and the second wedge-shaped surface (1610); A clamping unit is also provided between the unlocking block (162) and the connecting frame (161); when the unlocking block (162) abuts against the second wedge-shaped surface (1610), the unlocking block (162) is clamped on the connecting frame (161) through the clamping unit; The clamping unit comprises a slide bar (166) slidably connected to the inside of the unlocking block (162); a through slot (165) is provided on the positioning block (164); the slide bar (166) is slidably connected to the positioning block (164) through the through slot (165); a pressure spring (167) is further provided between the slide bar (166) and the unlocking block (162); a locking hole (168) is provided inside the connection frame (161); the slide bar (166) is intermittently clamped in the locking hole (168); An unlocking unit (17) for driving the sliding rod (166) to slide out from the locking hole (168) is also provided inside the positioning frame (9).

9. The sewage pathogen concentration device according to claim 8, characterized in that: The unlocking unit (17) comprises an unlocking rod (171) fixedly connected to the inside of the positioning frame (9); an unlocking groove (172) is provided on the sliding rod (132); and the unlocking rod (171) is in abutment with the unlocking groove (172).

10. The sewage pathogen concentration device according to claim 3, characterized in that: The bottom of the collecting bag (8) is also provided with a gravity ring (18), the positioning frame (9) is also provided with an abutment unit, and the trigger rod (101) is transmission-connected to the abutment unit; When the conical centrifugal cylinder (2) rotates, the gravity ball (102) slides away from the conical centrifugal cylinder (2), driving the abutment unit to abut against the gravity ring (18), thereby preventing the collection bag (8) from being deformed under the action of centrifugal force.

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