A culture device for testing microbial bacteria

Abstract

The present invention discloses a culture device for testing microorganisms and bacteria, which relates to the technical field of culture devices. The invention comprises an incubator with four support blocks respectively arranged under the incubator, a door which can be opened and closed is arranged on the front side of the incubator, a handle is arranged on the door, a U-shaped plate is arranged in the incubator, two vertical plates of the U-shaped plate are respectively slidably connected to the inner wall of the incubator, a placement plate is movably arranged between the two vertical plates of the U-shaped plate, and a plurality of grooves are respectively arranged on the placement plate; a heating plate is provided on the horizontal plate of the U-shaped plate below the placement plate, and a fan is provided on the inner side of one of the vertical plates of the U-shaped plate above the placement plate; an air distribution pipe is provided above the placement plate, and both ends of the air distribution pipe are respectively rotatably connected to the inner wall of the incubator, and a plurality of nozzles are respectively connected to the air distribution pipe; an intermittent spraying mechanism for intermittently spraying sterile air is provided on the incubator; the invention has a simple and reliable structure, good effect on culturing microorganisms and bacteria, is easy to control, and is suitable for popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of culture devices, and in particular to a culture device for testing microorganisms and bacteria. Background Art

[0002] Currently, microbial detection technology plays an important role in medical testing. Microbial testing technology involves a number of basic microbial technologies, including culture medium preparation, disinfection and sterilization, microbial separation and purification, inoculation, aseptic operation, microscopic observation, staining, counting, strain preservation, and serological testing. When culturing microorganisms, it is necessary to provide a suitable living environment for the microorganisms in the culture device so that the microorganisms can reproduce, and thus a culture device for testing microbial bacteria is needed.

[0003] In existing microbial culture devices, culture bottles are usually placed on a plate inside an incubator during the microbial culture process. However, most microorganisms are aerobic and require oxygen to carry out their normal life activities. Since the culture bottles are always in a static state and have a narrow bottleneck, the microorganisms cannot fully contact the air, which is not conducive to better microbial culture and growth, and is not conducive to sufficient mixing of the culture medium in the culture bottles, thus affecting the growth and reproduction of the microorganisms.

[0004] Based on this, the present invention provides a culture device for testing microorganisms and bacteria to solve the problems raised in the above background technology. Summary of the Invention

[0005] In response to the above problems, the present invention provides a culture device for testing microorganisms and bacteria, which solves the problem that in existing microorganism and bacteria culture devices, the culture bottles are always in a static state and the bottlenecks are narrow, so the microorganisms cannot fully contact the air, which is not conducive to better culture and growth of the microorganisms, and is not conducive to sufficient mixing of the culture medium in the culture bottle, thereby affecting the growth and reproduction of the microorganisms.

[0006] The technical solution of the present invention is: a culture device for testing microorganisms and bacteria, comprising an incubator, a support block, a door, a handle, an air distribution pipe, a heating plate, a fan, a nozzle, a placement plate, and a U-shaped plate;

[0007] Four support blocks are provided under the incubator, and a door is provided on the front side of the incubator that can be opened and closed. The door is provided with a handle. A U-shaped plate is provided inside the incubator, and two vertical plates of the U-shaped plate are respectively slidably connected to the inner wall of the incubator. A placement plate is movably provided between the two vertical plates of the U-shaped plate, and the placement plate is respectively provided with a plurality of grooves.

[0008] A heating plate is provided on the horizontal plate of the U-shaped plate below the placement plate, and a fan is provided on the inner side of one of the vertical plates of the U-shaped plate above the placement plate;

[0009] An air distribution pipe is provided above the placement plate, and both ends of the air distribution pipe are rotatably connected to the inner wall of the incubator, and a plurality of air nozzles are connected to the air distribution pipe respectively;

[0010] The incubator is provided with an intermittent spraying mechanism for intermittently spraying sterile air;

[0011] A swing mechanism is provided between the gas distribution pipe and the incubator to drive the gas distribution pipe to swing and spray, and the swing mechanism is driven by the intermittent spraying mechanism;

[0012] A reciprocating mechanism is provided between the U-shaped plate and the incubator to drive the U-shaped plate to move back and forth, and the reciprocating mechanism is driven by a swing mechanism;

[0013] A shaking mechanism for driving the placement plate to shake is provided between the U-shaped plate and the placement plate, and the shaking mechanism is driven by a reciprocating mechanism.

[0014] Furthermore, the intermittent spraying mechanism includes a sterile air storage tank, a filling pipe, a cylinder, a connecting pipe, a delivery hose, a driving member, a first mounting plate, a first rotating shaft, an incomplete gear, a complete gear, a second rotating shaft, a limiting plate, a first rotating rod, a third rotating shaft, a second mounting plate, an elastic member, a first rotating disk, a first rotating column, a first shifting rod, a third mounting plate, an L-shaped rod, a connecting rod, and a piston plate;

[0015] The incubator is provided with a sterile gas storage box, a filling pipe is connected to the sterile gas storage box, and a solenoid valve is provided in the filling pipe. The incubator on one side of the sterile gas storage box is provided with a cylinder, and a first end of a connecting pipe is connected to the bottom of the cylinder side wall near the sterile gas storage box, and the second end of the connecting pipe is connected to the sterile gas storage box, and a first one-way valve is provided in the first end of the connecting pipe;

[0016] A piston plate is provided slidingly in the cylinder, and a first end of a connecting rod is connected to the piston plate;

[0017] A first end of a delivery hose is connected through the bottom of the side wall of the cylinder away from the sterile gas storage box, and a second one-way valve is provided in the first end of the delivery hose;

[0018] The incubator on the other side of the cylinder is provided with a first mounting plate, an incomplete gear is provided on the outer side of the first mounting plate, the incomplete gear passes through the first rotating shaft, the first end of the first rotating shaft rotates and passes through the first mounting plate and is connected to the output end of the driving member, a complete gear detachably connected is provided above the incomplete gear, a limit plate is movably provided between two adjacent teeth on the front side of the complete gear, the limit plate is rotatably connected to the first end of the first rotating rod, the middle of the first rotating rod is vertically connected to the first end of the third rotating shaft, the second end of the third rotating shaft is rotatably connected to the first mounting plate, a second mounting plate is provided on the first mounting plate on the front side of the incomplete gear, the first end of the elastic member is connected to the second mounting plate, and the second end of the elastic member is connected to the second end of the first rotating rod;

[0019] A second rotating shaft is passed through the complete gear, one end of the second rotating shaft rotates through the first mounting plate and is sleeved with a first rotating disk, a first rotating column is provided on the eccentric position of the first rotating disk, a third mounting plate is provided on the first mounting plate above the first rotating disk, an L-shaped rod vertical rod is slidably passed through the third mounting plate, and the second end of the connecting rod slides through the top wall of the cylinder and is vertically connected to the end of the L-shaped rod horizontal rod;

[0020] The end of the L-shaped vertical rod is vertically connected to a first shifting rod, a first through slot is provided in the first shifting rod, and the first rotating column is slidably connected and arranged in the first through slot;

[0021] One end of the gas distribution pipe near the first mounting plate rotates and penetrates the inner wall of the incubator, and the second end of the delivery hose penetrates the first mounting plate and is connected to the one end of the gas distribution pipe penetrating the incubator;

[0022] The second end of the first rotating shaft drives the swing mechanism to work by rotating.

[0023] Furthermore, the swing mechanism includes a first sprocket, a first chain, a second sprocket, a fourth rotating shaft, a second rotating disk, a second rotating column, and a second shifting rod;

[0024] The second end of the first rotating shaft is sleeved with a first sprocket;

[0025] One end of a second lever is sleeved on the gas distribution pipe outside the incubator, a second through slot is formed in the second lever, a second rotating disk is provided on the inner side of the second lever, a first end of a fourth rotating shaft is connected to the second rotating disk, and a second end of the fourth rotating shaft is rotatably connected to the incubator;

[0026] A second rotating column is connected to an eccentric position of the second rotating disk, and the second rotating column is slidably connected and arranged in the second through groove. A second sprocket is sleeved on the fourth rotating shaft between the second rotating disk and the incubator, and a first chain is provided on the second sprocket and the first sprocket to engage with each other.

[0027] The fourth rotating shaft drives the reciprocating mechanism to work by rotating.

[0028] Further, the reciprocating mechanism includes a third sprocket, a second chain, a fourth sprocket, a fifth rotating shaft, a first bevel gear, a second bevel gear, a sixth rotating shaft, a first gear, a second gear, a seventh rotating shaft, a first mounting rod, and a second mounting rod;

[0029] A third sprocket is sleeved on the fourth rotating shaft between the second rotating disk and the second sprocket;

[0030] The first end of the sixth rotating shaft is rotatably connected to the bottom wall of the incubator, the second end of the sixth rotating shaft is sleeved with a first gear, the second end of the sixth rotating shaft is connected to the eccentric position of the first gear, the second bevel gear is sleeved on the sixth rotating shaft between the first gear and the bottom wall of the incubator, one side of the second bevel gear is meshed with the first bevel gear, the first end of the fifth rotating shaft is connected to the first bevel gear, the second end of the fifth rotating shaft is rotatably penetrates the inner wall of the incubator and is sleeved with a fourth sprocket, and the fourth sprocket is provided with a second chain meshed with the third sprocket;

[0031] The first gear is meshed with a second gear on both the front and rear sides, the second gear is connected to the first end of the seventh rotating shaft at an eccentric position, the second ends of the two seventh rotating shafts are rotatably sleeved with a same first mounting rod, the first mounting rod is vertically connected to the first mounting rod, and the second end of the second mounting rod is vertically connected to the bottom of the horizontal plate of the U-shaped plate;

[0032] The U-shaped plate drives the shaking mechanism to work by moving.

[0033] Furthermore, the shaking mechanism includes an eighth rotating shaft, a third gear, and a gear plate;

[0034] The inner sides of the two vertical plates of the U-shaped plate are both rotatably connected to the first end of the eighth rotating shaft, and the second ends of the two eighth rotating shafts are connected to the two ends of the same placement plate;

[0035] A third gear is sleeved on the eighth rotating shaft close to the fan, and a tooth plate engaged with the third gear is provided under the third gear. Both ends of the tooth plate are respectively connected to the inner wall of the incubator.

[0036] Furthermore, the driving member is a motor.

[0037] Furthermore, the elastic member is a compression spring.

[0038] Furthermore, a third through slot is provided on the inner wall of the incubator, and a protrusion matching the third through slot is provided on the vertical plate of the U-shaped plate, and the protrusion is slidably connected and arranged in the third through slot.

[0039] Advantages of the present invention:

[0040] The present invention is provided with an intermittent spraying mechanism, so that the nozzle can intermittently deliver sterile air to the culture bottles on the plate in the incubator, thereby achieving full contact between the sterile air and the microorganisms, meeting the breathing needs of the microorganisms, and allowing the microorganisms to carry out life activities under sufficient aerobic conditions, which is conducive to better cultivation and growth of the microorganisms; by providing a swinging mechanism, the nozzle can be intermittently delivered to the culture bottles on the plate in the incubator, and the swing of the nozzle head is used to increase the spraying range of the sterile air, thereby achieving uniform contact between the sterile air and the microorganisms, improving the effect of microbial cultivation and growth, and increasing the practicality of the device; by providing a reciprocating mechanism, the nozzle can be intermittently delivered to the culture bottles on the plate in the incubator, and the swing of the nozzle head is used to increase the spraying range of the sterile air, The reciprocating forward and backward movement of the placement plate can drive the culture bottles to shake back and forth, further enabling the microorganisms to fully contact with the air, thereby better growing, and is beneficial to the full mixing of the culture medium in the culture bottle, thereby promoting the growth and reproduction of the microorganisms; by setting up a shaking mechanism, the nozzle can intermittently deliver sterile air to the culture bottles on the placement plate in the incubator, the swing of the nozzle is used to increase the spraying range of the sterile air, the reciprocating forward and backward movement of the placement plate can drive the culture bottles to shake back and forth, further enabling the microorganisms to fully contact with the air, while the swing of the placement plate is used to shake the culture bottles, further promoting the full mixing of the culture medium in the culture bottles, promoting the good growth of the microorganisms, and enabling the microorganisms to grow and reproduce better; the structure of the present invention is simple and reliable, has a good effect on the culture of microorganisms and bacteria, is easy to control, and is suitable for promotion.

[0041] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0043] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0044] Figure 2 This is a schematic diagram of the installation of the placement plate of the present invention;

[0045] Figure 3 This is a schematic diagram of the installation of the first mounting plate of the present invention;

[0046] Figure 4 This is a schematic diagram of the installation of the first rotating disk of the present invention;

[0047] Figure 5 This is a schematic diagram of the installation of the second rotating disk of the present invention;

[0048] Figure 6 This is a schematic diagram of the installation of the sixth rotating shaft of the present invention.

[0049] Reference numerals:

[0050] 1 is an incubator, 101 is a support block, 102 is a door, 103 is a handle, 104 is a sterile gas storage box, 105 is a filling pipe, 106 is a cylinder, 107 is a connecting pipe, 108 is a delivery hose, 109 is an air distribution pipe, 1010 is a heating plate, 1011 is a fan, 2 is a nozzle, 21 is a driving member, 22 is a first mounting plate, 23 is a first rotating shaft, 24 is an incomplete gear, 25 is a complete gear, 26 is a second rotating shaft, 27 is a limiting plate, 28 is a first rotating rod, 29 is a third rotating shaft, 210 is a second mounting plate, 211 is an elastic member, 212 is a first rotating disk, 213 is a first rotating column, 214 is a first lever, 215 is a third mounting plate, 216 It is an L-shaped rod, 217 is a connecting rod, 218 is a piston plate, 219 is a first sprocket, 220 is a first chain, 221 is a second sprocket, 222 is a fourth rotating shaft, 223 is a second rotating disk, 224 is a second rotating column, 225 is a second shifting rod, 3 is a placing plate, 31 is a third sprocket, 32 is a second chain, 33 is a fourth sprocket, 34 is a fifth rotating shaft, 35 is a first bevel gear, 36 is a second bevel gear, 37 is a sixth rotating shaft, 38 is a first gear, 39 is a second gear, 310 is a seventh rotating shaft, 311 is a first mounting rod, 312 is a second mounting rod, 313 is a U-shaped plate, 314 is an eighth rotating shaft, 315 is a third gear, 316 is a tooth plate, and 317 is a protrusion. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0053] refer to Figures 1 to 6, a culture device for testing microbial bacteria, including an incubator 1, a support block 101, a door 102, a handle 103, an air distribution pipe 109, a heating plate 1010, a fan 1011, an air nozzle 2, a placement plate 3, and a U-shaped plate 313;

[0054] Four support blocks 101 are respectively installed under the incubator 1; the incubator 1 is used to install the support blocks 101, and the support blocks 101 are used to support the incubator 1. A door 102 is installed at one end of the front side of the incubator 1, which can be opened and closed by a hinge. A commercially available locking piece is installed between the other end of the front side of the incubator 1 and the door 102, and a handle 103 is installed on the door 102; the door 102 and the handle 103 are used to open and close the incubator 1; the door 102 is made of transparent material to facilitate observation by the staff, and a U-shaped plate 313 is installed in the incubator 1. The two vertical plates of the U-shaped plate 313 are respectively slidably connected to the inner wall of the incubator 1, and a placement plate 3 is movably installed between the two vertical plates of the U-shaped plate 313, and the placement plate 3 is respectively provided with a plurality of grooves; the grooves are used to place culture bottles;

[0055] A heating plate 1010 is installed on the horizontal plate of the U-shaped plate 313 below the placement plate 3, and a fan 1011 is installed on the inner side of one of the vertical plates of the U-shaped plate 313 above the placement plate 3; specifically, when the weather is cold, the staff can start the heating plate 1010, and the heating plate 1010 can emit heat, thereby increasing the temperature inside the incubator 1; when the weather is hot, people can start the fan 1011 to blow air to achieve the purpose of cooling;

[0056] An air distribution pipe 109 is installed above the placement plate 3. Both ends of the air distribution pipe 109 are rotatably connected to the inner wall of the incubator 1. A plurality of air nozzles 2 are connected to the air distribution pipe 109.

[0057] The incubator 1 is provided with an intermittent spraying mechanism for intermittently spraying sterile air;

[0058] A swing mechanism is installed between the gas distribution pipe 109 and the incubator 1 to drive the gas distribution pipe 109 to swing and spray, and the swing mechanism is driven by the intermittent spraying mechanism;

[0059] A reciprocating mechanism is installed between the U-shaped plate 313 and the incubator 1 to drive the U-shaped plate 313 to move back and forth, and the reciprocating mechanism is driven by a swing mechanism;

[0060] A shaking mechanism is installed between the U-shaped plate 313 and the placement plate 3 to drive the placement plate 3 to shake, and the shaking mechanism is driven by a reciprocating mechanism;

[0061] The intermittent spraying mechanism includes a sterile air storage tank 104, a filling pipe 105, a cylinder 106, a connecting pipe 107, a delivery hose 108, a driving member 21, a first mounting plate 22, a first rotating shaft 23, an incomplete gear 24, a complete gear 25, a second rotating shaft 26, a limiting plate 27, a first rotating rod 28, a third rotating shaft 29, a second mounting plate 210, an elastic member 211, a first rotating disk 212, a first rotating column 213, a first shifting rod 214, a third mounting plate 215, an L-shaped rod 216, a connecting rod 217, and a piston plate 218.

[0062] A sterile air storage tank 104 is mounted on the incubator 1, and a filling pipe 105 is connected to the sterile air storage tank 104; the filling pipe 105 is used to fill sterile air, and a solenoid valve is installed in the filling pipe 105. A cylinder 106 is mounted on the incubator 1 on one side of the sterile air storage tank 104. A first end of a connecting pipe 107 is connected to the bottom of the side wall of the cylinder 106 near the sterile air storage tank 104, and a second end of the connecting pipe 107 is connected to the sterile air storage tank 104. A first one-way valve is installed in the first end of the connecting pipe 107.

[0063] A piston plate 218 is slidably mounted in the cylinder 106 , and a first end of a connecting rod 217 is connected to the piston plate 218 ;

[0064] A first end of a delivery hose 108 is connected to the bottom of the side wall of the cylinder 106 away from the sterile gas storage box 104, and a second one-way valve is installed in the first end of the delivery hose 108;

[0065] A first mounting plate 22 is mounted on the incubator 1 on the other side of the cylinder 106. An incomplete gear 24 is mounted on the outside of the first mounting plate 22. A first rotating shaft 23 runs through the incomplete gear 24. The first end of the first rotating shaft 23 rotates through the first mounting plate 22 and is connected to the output end of the driving member 21. The first mounting plate 22 is used to mount the first rotating shaft 23. The driving member 21 is a commercially available motor. A detachable and meshing complete gear 25 is mounted above the incomplete gear 24. A limit plate 27 is movably mounted between two adjacent teeth on the front side of the complete gear 25. The limit plate 27 The first end of the first rotating rod 28 is rotatably connected to the upper portion, and the first end of the third rotating shaft 29 is vertically connected to the middle portion of the first rotating rod 28; the third rotating shaft 29 is used to mount the first rotating rod 28, and the second end of the third rotating shaft 29 is rotatably connected to the first mounting plate 22. A second mounting plate 210 is mounted on the first mounting plate 22 on the front side of the incomplete gear 24, and the first end of the elastic member 211 is connected to the second mounting plate 210; the second mounting plate 210 is used to mount the elastic member 211, and the second end of the elastic member 211 is connected to the second end of the first rotating rod 28; the elastic member 211 is a compression spring;

[0066] A second rotating shaft 26 runs through the complete gear 25. One end of the second rotating shaft 26 rotates through the first mounting plate 22 and is fixedly sleeved with a first rotating disk 212. A first rotating column 213 is installed at an eccentric position of the first rotating disk 212. A third mounting plate 215 is installed on the first mounting plate 22 above the first rotating disk 212. An L-shaped rod 216 vertical rod slides through the third mounting plate 215; the third mounting plate 215 is used to mount the L-shaped rod 216. The second end of the connecting rod 217 slides through the top wall of the cylinder 106 and is vertically connected to the end of the L-shaped rod 216 horizontal rod.

[0067] The end of the vertical rod of the L-shaped rod 216 is vertically connected to the first lever 214. The first lever 214 has a first through slot extending therethrough. The first rotating column 213 is slidably connected to the first through slot.

[0068] One end of the gas distribution pipe 109 near the first mounting plate 22 rotates and penetrates the inner wall of the incubator 1. The second end of the delivery hose 108 penetrates the first mounting plate 22 and is connected to the end of the gas distribution pipe 109 that penetrates the incubator 1.

[0069] The second end of the first rotating shaft 23 drives the swing mechanism to work by rotating;

[0070] Preferably, the driving member 21 drives the first rotating shaft 23 to rotate, and the rotation of the first rotating shaft 23 drives the incomplete gear 24 to rotate;

[0071] When the incomplete gear 24 is meshed with the complete gear 25, the incomplete gear 24 rotates and drives the complete gear 25 to rotate. At this time, the complete gear 25 rotates and pushes the limit plate 27 to move forward and disengage from between the two adjacent teeth on the front side of the complete gear 25, thereby releasing the limit on the complete gear 25. The limit plate 27 moves forward and drives the first rotating rod 28 to rotate about the third rotating shaft 29, thereby stretching the elastic member 211.

[0072] When the incomplete gear 24 is disengaged from the complete gear 25, the incomplete gear 24 rotates so that the complete gear 25 does not rotate. At this time, the elastic member 211 returns to its original position, and the limiting plate 27 moves backward and engages between two adjacent teeth on the front side of the complete gear 25, thereby limiting the position of the complete gear 25.

[0073] The incomplete gear 24 rotates to drive the complete gear 25 to rotate intermittently, the intermittent rotation of the complete gear 25 drives the second rotating shaft 26 to rotate intermittently, the intermittent rotation of the second rotating shaft 26 drives the first rotating disk 212 to rotate intermittently, the intermittent rotation of the first rotating disk 212 drives the first rotating column 213 to rotate intermittently, the intermittent rotation of the first rotating column 213 drives the first shifting rod 214 to move up and down intermittently, the intermittent reciprocating movement of the first shifting rod 214 drives the L-shaped rod 216 to move up and down intermittently, the intermittent reciprocating movement of the L-shaped rod 216 drives the connecting rod 217 to move up and down intermittently, the intermittent reciprocating movement of the connecting rod 217 drives the piston plate 218 to move up and down intermittently;

[0074] When the piston plate 218 moves upward, the first one-way valve installed at the first end of the connecting pipe 107 opens, and the second one-way valve installed at the first end of the delivery hose 108 closes, and the sterile air in the sterile air storage tank 104 is sucked into the cylinder 106 through the connecting pipe 107;

[0075] When the piston plate 218 moves downward, the first one-way valve installed at the first end of the connecting pipe 107 closes, and the second one-way valve installed at the first end of the delivery hose 108 opens. The sterile air sucked into the cylinder 106 through the connecting pipe 107 is sprayed into the incubator 1 through the delivery hose 108, the gas distribution pipe 109, and the nozzle 2, and then enters the culture bottle on the placement plate 3.

[0076] In this way, the air jet head 2 can intermittently deliver sterile air to the culture bottles placed on the plate 3 in the incubator 1, thereby achieving sufficient contact between the sterile air and the microorganisms, meeting the breathing needs of the microorganisms, and allowing the microorganisms to carry out their life activities under sufficient aerobic conditions, which is conducive to better cultivation and growth of the microorganisms;

[0077] The swing mechanism includes a first sprocket 219, a first chain 220, a second sprocket 221, a fourth rotating shaft 222, a second rotating disk 223, a second rotating column 224, and a second shifting rod 225;

[0078] A first sprocket 219 is fixedly mounted on the second end of the first rotating shaft 23;

[0079] One end of a second lever 225 is fixedly sleeved on the gas distribution pipe 109 outside the incubator 1. A second through slot is formed in the second lever 225. A second rotating disk 223 is mounted on the inner side of the second lever 225. A first end of a fourth rotating shaft 222 is connected to the second rotating disk 223. The second end of the fourth rotating shaft 222 is rotatably connected to the incubator 1.

[0080] A second rotating column 224 is connected to an eccentric position of the second rotating disk 223. The second rotating column 224 is slidably connected and disposed in the second through groove. A second sprocket 221 is fixedly sleeved on the fourth rotating shaft 222 between the second rotating disk 223 and the incubator 1. A first chain 220 is mounted on the second sprocket 221 and the first sprocket 219, which mesh with each other. The first chain 220 is used to connect the second sprocket 221 and the first sprocket 219.

[0081] The fourth rotating shaft 222 drives the reciprocating mechanism to work by rotating;

[0082] Preferably, the rotation of the first rotating shaft 23 drives the first sprocket 219 to rotate, the rotation of the first sprocket 219 drives the second sprocket 221 to rotate, the rotation of the second sprocket 221 drives the fourth rotating shaft 222 to rotate, the rotation of the fourth rotating shaft 222 drives the second rotating disk 223 to rotate, the rotation of the second rotating disk 223 drives the second rotating column 224 to rotate, the rotation of the second rotating column 224 drives the second lever 225 to swing, the swinging of the second lever 225 drives the air distribution pipe 109 to rotate back and forth, the reciprocating rotation of the air distribution pipe 109 drives the air jet head 2 to swing, the swinging of the air jet head 2 is used to increase the spraying range of the sterile air, achieve uniform contact between the sterile air and the microorganisms, improve the effect of microbial culture and growth, and increase the practicality of the device;

[0083] The reciprocating mechanism includes a third sprocket 31, a second chain 32, a fourth sprocket 33, a fifth rotating shaft 34, a first bevel gear 35, a second bevel gear 36, a sixth rotating shaft 37, a first gear 38, a second gear 39, a seventh rotating shaft 310, a first mounting rod 311, and a second mounting rod 312;

[0084] A third sprocket 31 is fixedly mounted on the fourth rotating shaft 222 between the second rotating disk 223 and the second sprocket 221;

[0085] A first end of a sixth rotating shaft 37 is rotatably connected to the bottom wall of the incubator 1 , a first gear 38 is fixedly sleeved on the second end of the sixth rotating shaft 37 , and the second end of the sixth rotating shaft 37 is connected to an eccentric position of the first gear 38 , a second bevel gear 36 is fixedly sleeved on the sixth rotating shaft 37 between the first gear 38 and the bottom wall of the incubator 1 , one side of the second bevel gear 36 is meshedly connected to the first bevel gear 35 , the first end of the fifth rotating shaft 34 is connected to the first bevel gear 35 , and a fourth sprocket 33 is fixedly sleeved on the second end of the fifth rotating shaft 34 that penetrates the inner wall of the incubator 1 , and a second chain 32 meshing with the fourth sprocket 33 and the third sprocket 31 is installed; the second chain 32 is used to connect the fourth sprocket 33 and the third sprocket 31 ;

[0086] The first gear 38 is meshed with the second gear 39 on both its front and rear sides. The first end of the seventh rotating shaft 310 is connected to the eccentric position of the second gear 39. The second ends of the two seventh rotating shafts 310 are rotatably sleeved with the same first mounting rod 311. The first end of the second mounting rod 312 is perpendicularly connected to the first mounting rod 311. The second end of the second mounting rod 312 is perpendicularly connected to the bottom of the U-shaped plate 313. Specifically, the first gear 38 and the two second gears 39 have the same number of teeth and pitch circle diameter, thereby preventing motion interference.

[0087] The U-shaped plate 313 drives the shaking mechanism to work by moving;

[0088] Preferably, the fourth rotating shaft 222 rotates to drive the third sprocket 31 to rotate, the third sprocket 31 rotates to drive the fourth sprocket 33 to rotate, the fourth sprocket 33 rotates to drive the fifth rotating shaft 34 to rotate, the fifth rotating shaft 34 rotates to drive the first bevel gear 35 to rotate, the first bevel gear 35 rotates to drive the second bevel gear 36 to rotate, the second bevel gear 36 rotates to drive the sixth rotating shaft 37 to rotate, the sixth rotating shaft 37 rotates to drive the first gear 38 to rotate, and the first gear 38 rotates to drive the second gear 39 to rotate;

[0089] Since the second end of the sixth rotating shaft 37 is connected to the eccentric position of the first gear 38, the front and rear sides of the first gear 38 are meshed with the second gear 39, and the eccentric position of the second gear 39 is connected to the first end of the seventh rotating shaft 310. The second ends of the two seventh rotating shafts 310 are fixedly sleeved with the same first mounting rod 311.

[0090] The second gear 39 rotates, driving the seventh rotating shaft 310 to rotate and move back and forth. The back and forth movement of the seventh rotating shaft 310 drives the first mounting rod 311 to move back and forth. The back and forth movement of the first mounting rod 311 drives the second mounting rod 312 to move back and forth. The back and forth movement of the second mounting rod 312 drives the U-shaped plate 313 to move back and forth. The back and forth movement of the U-shaped plate 313 drives the placement plate 3 to move back and forth. The back and forth movement of the placement plate 3 can drive the culture bottle to shake back and forth, further allowing the microorganisms to fully contact with the air, thereby better growing, and is conducive to sufficient mixing of the culture medium in the culture bottle, thereby promoting the growth and reproduction of the microorganisms.

[0091] The shaking mechanism includes an eighth rotating shaft 314, a third gear 315, and a gear plate 316;

[0092] The inner sides of the two vertical plates of the U-shaped plate 313 are both rotatably connected to the first ends of the eighth rotating shaft 314, and the second ends of the two eighth rotating shafts 314 are connected to the two ends of the same placement plate 3;

[0093] A third gear 315 is fixedly mounted on the eighth rotating shaft 314 near the fan 1011 . A toothed plate 316 is mounted below the third gear 315 . Both ends of the toothed plate 316 are connected to the inner wall of the incubator 1 .

[0094] Preferably, a third gear 315 is fixedly sleeved on the eighth rotating shaft 314 close to the fan 1011, a tooth plate 316 is mounted under the third gear 315 for meshing connection, and both ends of the tooth plate 316 are respectively connected to the inner wall of the incubator 1;

[0095] The U-shaped plate 313 reciprocates back and forth, driving the third gear 315 to rotate back and forth. The reciprocating rotation of the third gear 315 drives the eighth rotating shaft 314 to rotate back and forth. The reciprocating rotation of the eighth rotating shaft 314 drives the placement plate 3 to swing. The swinging of the placement plate 3 is used to shake the culture bottle, further promoting the full mixing of the culture medium in the culture bottle, promoting the good growth of the microorganisms, and enabling better growth and reproduction of the microorganisms.

[0096] A third through groove is provided on the inner wall of the incubator 1, and a protrusion 317 that cooperates with the third through groove is installed on the vertical plate of the U-shaped plate 313. The protrusion 317 is slidably connected and arranged in the third through groove; the cooperation between the third through groove and the protrusion 317 ensures that the U-shaped plate 313 slides smoothly on the inner wall of the incubator 1.

[0097] The method of using the present invention is as follows: when it is necessary to culture the test microorganisms, the staff pulls the handle 103 to open the door 102, places the culture bottle containing the microorganisms in the groove on the placement plate 3, then closes the door 102, and then drives the driving member 21;

[0098] The driving member 21 drives the first rotating shaft 23 to rotate, and the rotation of the first rotating shaft 23 drives the incomplete gear 24 to rotate;

[0099] When the incomplete gear 24 is meshed with the complete gear 25, the incomplete gear 24 rotates and drives the complete gear 25 to rotate. At this time, the complete gear 25 rotates and pushes the limit plate 27 to move forward and disengage from between the two adjacent teeth on the front side of the complete gear 25, thereby releasing the limit on the complete gear 25. The limit plate 27 moves forward and drives the first rotating rod 28 to rotate about the third rotating shaft 29, thereby stretching the elastic member 211.

[0100] When the incomplete gear 24 is disengaged from the complete gear 25, the incomplete gear 24 rotates so that the complete gear 25 does not rotate. At this time, the elastic member 211 returns to its original position, and the limiting plate 27 moves backward and engages between two adjacent teeth on the front side of the complete gear 25, thereby limiting the position of the complete gear 25.

[0101] The incomplete gear 24 rotates to drive the complete gear 25 to rotate intermittently, the intermittent rotation of the complete gear 25 drives the second rotating shaft 26 to rotate intermittently, the intermittent rotation of the second rotating shaft 26 drives the first rotating disk 212 to rotate intermittently, the intermittent rotation of the first rotating disk 212 drives the first rotating column 213 to rotate intermittently, the intermittent rotation of the first rotating column 213 drives the first shifting rod 214 to move up and down intermittently, the intermittent reciprocating movement of the first shifting rod 214 drives the L-shaped rod 216 to move up and down intermittently, the intermittent reciprocating movement of the L-shaped rod 216 drives the connecting rod 217 to move up and down intermittently, the intermittent reciprocating movement of the connecting rod 217 drives the piston plate 218 to move up and down intermittently;

[0102] When the piston plate 218 moves upward, the first one-way valve installed at the first end of the connecting pipe 107 opens, and the second one-way valve installed at the first end of the delivery hose 108 closes, and the sterile air in the sterile air storage tank 104 is sucked into the cylinder 106 through the connecting pipe 107;

[0103] When the piston plate 218 moves downward, the first one-way valve installed at the first end of the connecting pipe 107 closes, and the second one-way valve installed at the first end of the delivery hose 108 opens. The sterile air sucked into the cylinder 106 through the connecting pipe 107 is sprayed into the incubator 1 through the delivery hose 108, the gas distribution pipe 109, and the nozzle 2, and then enters the culture bottle on the placement plate 3.

[0104] In this way, the air jet head 2 can intermittently deliver sterile air to the culture bottles placed on the plate 3 in the incubator 1, thereby achieving sufficient contact between the sterile air and the microorganisms, meeting the breathing needs of the microorganisms, and allowing the microorganisms to carry out their life activities under sufficient aerobic conditions, which is conducive to better cultivation and growth of the microorganisms;

[0105] At the same time, the rotation of the first rotating shaft 23 drives the first sprocket 219 to rotate, the rotation of the first sprocket 219 drives the second sprocket 221 to rotate, the rotation of the second sprocket 221 drives the fourth rotating shaft 222 to rotate, the rotation of the fourth rotating shaft 222 drives the second rotating disk 223 to rotate, the rotation of the second rotating disk 223 drives the second rotating column 224 to rotate, the rotation of the second rotating column 224 drives the second lever 225 to swing, the swinging of the second lever 225 drives the air distribution pipe 109 to rotate back and forth, the reciprocating rotation of the air distribution pipe 109 drives the air jet head 2 to swing, the swinging of the air jet head 2 is used to increase the spraying range of the sterile air, achieve uniform contact between the sterile air and the microorganisms, improve the effect of microbial culture growth, and increase the practicality of the device;

[0106] At the same time, the fourth rotating shaft 222 rotates to drive the third sprocket 31 to rotate, the third sprocket 31 rotates to drive the fourth sprocket 33 to rotate, the fourth sprocket 33 rotates to drive the fifth rotating shaft 34 to rotate, the fifth rotating shaft 34 rotates to drive the first bevel gear 35 to rotate, the first bevel gear 35 rotates to drive the second bevel gear 36 to rotate, the second bevel gear 36 rotates to drive the sixth rotating shaft 37 to rotate, the sixth rotating shaft 37 rotates to drive the first gear 38 to rotate, and the first gear 38 rotates to drive the second gear 39;

[0107] Since the second end of the sixth rotating shaft 37 is connected to the eccentric position of the first gear 38, the front and rear sides of the first gear 38 are meshed with the second gear 39, and the eccentric position of the second gear 39 is connected to the first end of the seventh rotating shaft 310. The second ends of the two seventh rotating shafts 310 are fixedly sleeved with the same first mounting rod 311.

[0108] The second gear 39 rotates, driving the seventh rotating shaft 310 to rotate and move back and forth. The back and forth movement of the seventh rotating shaft 310 drives the first mounting rod 311 to move back and forth. The back and forth movement of the first mounting rod 311 drives the second mounting rod 312 to move back and forth. The back and forth movement of the second mounting rod 312 drives the U-shaped plate 313 to move back and forth. The back and forth movement of the U-shaped plate 313 drives the placement plate 3 to move back and forth. The back and forth movement of the placement plate 3 can drive the culture bottle to shake back and forth, further allowing the microorganisms to fully contact with the air, thereby better growing, and is conducive to sufficient mixing of the culture medium in the culture bottle, thereby promoting the growth and reproduction of the microorganisms.

[0109] At the same time, since a third gear 315 is fixedly mounted on the eighth rotating shaft 314 near the fan 1011, a toothed plate 316 is mounted below the third gear 315, and both ends of the toothed plate 316 are connected to the inner wall of the incubator 1 respectively;

[0110] The U-shaped plate 313 moves back and forth to drive the third gear 315 to rotate back and forth, the reciprocating rotation of the third gear 315 drives the eighth rotating shaft 314 to rotate back and forth, and the reciprocating rotation of the eighth rotating shaft 314 drives the placement plate 3 to swing. The swinging of the placement plate 3 is used to shake the culture bottle, further promoting the full mixing of the culture medium in the culture bottle, promoting the good growth of microorganisms, and enabling the microorganisms to grow and reproduce better.

[0111] The present invention is provided with an intermittent spraying mechanism, so that the nozzle can intermittently deliver sterile air to the culture bottles on the plate in the incubator, thereby achieving full contact between the sterile air and the microorganisms, meeting the breathing needs of the microorganisms, and allowing the microorganisms to carry out life activities under sufficient aerobic conditions, which is conducive to better cultivation and growth of the microorganisms; by providing a swinging mechanism, the nozzle can be intermittently delivered to the culture bottles on the plate in the incubator, and the swing of the nozzle head is used to increase the spraying range of the sterile air, thereby achieving uniform contact between the sterile air and the microorganisms, improving the effect of microbial cultivation and growth, and increasing the practicality of the device; by providing a reciprocating mechanism, the nozzle can be intermittently delivered to the culture bottles on the plate in the incubator, and the swing of the nozzle head is used to increase the spraying range of the sterile air, The reciprocating forward and backward movement of the placement plate can drive the culture bottles to shake back and forth, further enabling the microorganisms to fully contact with the air, thereby better growing, and is beneficial to the full mixing of the culture medium in the culture bottle, thereby promoting the growth and reproduction of the microorganisms; by setting up a shaking mechanism, the nozzle can intermittently deliver sterile air to the culture bottles on the placement plate in the incubator, the swing of the nozzle is used to increase the spraying range of the sterile air, the reciprocating forward and backward movement of the placement plate can drive the culture bottles to shake back and forth, further enabling the microorganisms to fully contact with the air, while the swing of the placement plate is used to shake the culture bottles, further promoting the full mixing of the culture medium in the culture bottles, promoting the good growth of the microorganisms, and enabling the microorganisms to grow and reproduce better; the structure of the present invention is simple and reliable, has a good effect on the culture of microorganisms and bacteria, is easy to control, and is suitable for promotion.

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A culture device for testing microorganisms and bacteria, characterized in that: It includes an incubator (1), a support block (101), a door (102), a handle (103), an air distribution pipe (109), a heating plate (1010), a fan (1011), an air nozzle (2), a placement plate (3), and a U-shaped plate (313); Four support blocks (101) are respectively provided under the incubator (1); a door (102) is provided on the front side of the incubator (1) and can be opened and closed; a handle (103) is provided on the door (102); a U-shaped plate (313) is provided inside the incubator (1); two vertical plates of the U-shaped plate (313) are respectively slidably connected to the inner wall of the incubator (1); a placement plate (3) is movably provided between the two vertical plates of the U-shaped plate (313); and a plurality of grooves are respectively provided on the placement plate (3); A heating plate (1010) is provided on the horizontal plate of the U-shaped plate (313) below the placement plate (3), and a fan (1011) is provided on the inner side of one of the vertical plates of the U-shaped plate (313) above the placement plate (3); An air distribution pipe (109) is provided above the placement plate (3), and both ends of the air distribution pipe (109) are rotatably connected to the inner wall of the incubator (1), and a plurality of air jet heads (2) are connected to the air distribution pipe (109); The incubator (1) is provided with an intermittent spraying mechanism for intermittently spraying sterile air; A swing mechanism for driving the air distribution pipe (109) to swing and spray is provided between the air distribution pipe (109) and the incubator (1), and the swing mechanism is driven by the intermittent spraying mechanism; A reciprocating mechanism for driving the U-shaped plate (313) to move back and forth is provided between the U-shaped plate (313) and the incubator (1), and the reciprocating mechanism is driven by a swinging mechanism; A shaking mechanism for driving the placement plate (3) to shake is provided between the U-shaped plate (313) and the placement plate (3), and the shaking mechanism is driven by a reciprocating mechanism.

2. The culture device for testing microorganisms and bacteria according to claim 1, characterized in that: The intermittent spraying mechanism comprises a sterile air storage box (104), a filling pipe (105), a cylinder (106), a connecting pipe (107), a delivery hose (108), a driving member (21), a first mounting plate (22), a first rotating shaft (23), an incomplete gear (24), a complete gear (25), a second rotating shaft (26), a limiting plate (27), a first rotating rod (28), a third rotating shaft (29), a second mounting plate (210), an elastic member (211), a first rotating plate (212), a first rotating column (213), a first shifting rod (214), a third mounting plate (215), an L-shaped rod (216), a connecting rod (217), and a piston plate (218); The incubator (1) is provided with a sterile gas storage box (104), a filling pipe (105) is connected to the sterile gas storage box (104), and a solenoid valve is provided in the filling pipe (105). The incubator (1) on one side of the sterile gas storage box (104) is provided with a cylinder (106), and the bottom of the side wall of the cylinder (106) close to the sterile gas storage box (104) is connected to the first end of a connecting pipe (107), and the second end of the connecting pipe (107) is connected to the sterile gas storage box (104), and a first one-way valve is provided in the first end of the connecting pipe (107); A piston plate (218) is provided slidingly in the cylinder (106), and a first end of a connecting rod (217) is connected to the piston plate (218); A first end of a delivery hose (108) is connected through the bottom of the side wall of the cylinder (106) away from the sterile gas storage box (104), and a second one-way valve is provided in the first end of the delivery hose (108); A first mounting plate (22) is provided on the incubator (1) on the other side of the cylinder (106), an incomplete gear (24) is provided on the outside of the first mounting plate (22), a first rotating shaft (23) is passed through the incomplete gear (24), a first end of the first rotating shaft (23) is rotated through the first mounting plate (22) and is connected to the output end of the driving member (21), a detachably meshed complete gear (25) is provided above the incomplete gear (24), and a limit plate (25) is provided between two adjacent teeth on the front side of the complete gear (25) 27), the limiting plate (27) is rotatably connected to the first end of the first rotating rod (28), the middle part of the first rotating rod (28) is vertically connected to the first end of the third rotating shaft (29), the second end of the third rotating shaft (29) is rotatably connected to the first mounting plate (22), the first mounting plate (22) on the front side of the incomplete gear (24) is provided with a second mounting plate (210), the second mounting plate (210) is connected to the first end of the elastic member (211), and the second end of the elastic member (211) is connected to the second end of the first rotating rod (28); A second rotating shaft (26) is passed through the complete gear (25), one end of the second rotating shaft (26) is rotated through the first mounting plate (22) and is sleeved with a first rotating disk (212), a first rotating column (213) is provided on an eccentric position of the first rotating disk (212), a third mounting plate (215) is provided on the first mounting plate (22) above the first rotating disk (212), an L-shaped rod (216) vertical rod is slidably passed through the third mounting plate (215), and the second end of the connecting rod (217) is slidably passed through the top wall of the cylinder (106) and is vertically connected to the end of the L-shaped rod (216) horizontal rod; The vertical rod end of the L-shaped rod (216) is vertically connected to a first shifting rod (214), a first through slot is provided in the first shifting rod (214), and the first rotating column (213) is slidably connected and arranged in the first through slot; One end of the gas distribution pipe (109) near the first mounting plate (22) is rotated to penetrate the inner wall of the incubator (1), and the second end of the delivery hose (108) penetrates the first mounting plate (22) and is connected to one end of the gas distribution pipe (109) penetrating the incubator (1); The second end of the first rotating shaft (23) drives the swing mechanism to work by rotating.

3. The culture device for testing microorganisms and bacteria according to claim 2, characterized in that: The swing mechanism comprises a first sprocket (219), a first chain (220), a second sprocket (221), a fourth rotating shaft (222), a second rotating disk (223), a second rotating column (224), and a second shifting rod (225); A first sprocket (219) is sleeved on the second end of the first rotating shaft (23); One end of a second lever (225) is sleeved on the gas distribution pipe (109) outside the incubator (1), a second through slot is provided in the second lever (225), a second rotating disk (223) is provided on the inner side of the second lever (225), a first end of a fourth rotating shaft (222) is connected to the second rotating disk (223), and a second end of the fourth rotating shaft (222) is rotatably connected to the incubator (1); A second rotating column (224) is connected to an eccentric position of the second rotating disk (223), and the second rotating column (224) is slidably connected and arranged in the second through groove. A second sprocket (221) is sleeved on the fourth rotating shaft (222) between the second rotating disk (223) and the incubator (1), and a first chain (220) is provided on the second sprocket (221) and the first sprocket (219) to engage with each other. The fourth rotating shaft (222) drives the reciprocating mechanism to work by rotating.

4. The culture device for testing microorganisms and bacteria according to claim 3, characterized in that: The reciprocating mechanism comprises a third sprocket (31), a second chain (32), a fourth sprocket (33), a fifth rotating shaft (34), a first bevel gear (35), a second bevel gear (36), a sixth rotating shaft (37), a first gear (38), a second gear (39), a seventh rotating shaft (310), a first mounting rod (311), and a second mounting rod (312); A third sprocket (31) is sleeved on the fourth rotating shaft (222) between the second rotating disk (223) and the second sprocket (221); The first end of the sixth rotating shaft (37) is rotatably connected to the bottom wall of the incubator (1), the second end of the sixth rotating shaft (37) is sleeved with a first gear (38), the second end of the sixth rotating shaft (37) is connected to the eccentric position of the first gear (38), the sixth rotating shaft (37) between the first gear (38) and the bottom wall of the incubator (1) is sleeved with a second bevel gear (36), one side of the second bevel gear (36) is meshedly connected to the first bevel gear (35), the first end of the fifth rotating shaft (34) is connected to the first bevel gear (35), the second end of the fifth rotating shaft (34) is rotatably penetrates the inner wall of the incubator (1) and is sleeved with a fourth sprocket (33), the fourth sprocket (33) and the third sprocket (31) are provided with a second chain (32) meshed with each other; The first gear (38) is meshedly connected to the second gear (39) on both the front and rear sides, the first end of the seventh rotating shaft (310) is connected to the eccentric position of the second gear (39), the second ends of the two seventh rotating shafts (310) are rotatably sleeved with the same first mounting rod (311), the first end of the second mounting rod (312) is vertically connected to the first mounting rod (311), and the second end of the second mounting rod (312) is vertically connected to the bottom of the horizontal plate of the U-shaped plate (313); The U-shaped plate (313) drives the shaking mechanism to work by moving.

5. The culture device for testing microorganisms and bacteria according to claim 4, characterized in that: The shaking mechanism includes an eighth rotating shaft (314), a third gear (315), and a gear plate (316); The inner sides of the two vertical plates of the U-shaped plate (313) are both rotatably connected to the first end of the eighth rotating shaft (314), and the second ends of the two eighth rotating shafts (314) are connected to the two ends of the same placement plate (3); A third gear (315) is sleeved on the eighth rotating shaft (314) close to the fan (1011), and a tooth plate (316) is provided below the third gear (315) for meshing connection. Both ends of the tooth plate (316) are respectively connected to the inner wall of the incubator (1).

6. The culture device for testing microorganisms and bacteria according to claim 2, characterized in that: The driving member (21) is a motor.

7. The culture device for testing microorganisms and bacteria according to claim 2, characterized in that: The elastic member (211) is a compression spring.

8. The culture device for testing microorganisms and bacteria according to claim 5, characterized in that: A third through slot is provided on the inner wall of the incubator (1), and a protrusion (317) matching the third through slot is provided on the vertical plate of the U-shaped plate (313), and the protrusion (317) is slidably connected and arranged in the third through slot.

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