A flat plate sedimentation type fully automatic centrifuge

Abstract

A flat plate sedimentation type fully automatic centrifuge, including a bottom plate, a motor, a drum, and a casing; a damping shock absorber is arranged on the lower side of the bottom plate; the drum and the motor are arranged on the upper side of the bottom plate, and the motor is connected to the drum by belt transmission; the casing covers the outer side of the drum, and an upper cover is arranged on the upper side of the casing; an explosion-proof lamp, a material inlet and outlet device, a scraper mechanism, a liquid inlet pipe, a material level detector, and an observation port are arranged on the upper cover; a sight glass made of transparent material is arranged on the observation port; a pumping device is also arranged on the position of the casing corresponding to the upper side of the drum, and the material inlet and outlet device and the pumping device both include a tube body, a cylinder shell, a reset shell and a sliding piston, and the tube body reciprocates axially relative to the cylinder shell and the reset shell; a reset spring is arranged in the reset shell, and after each movement, the tube body is returned to the initial state by the elastic force of the reset spring, completing the entire work process. This centrifuge is fully automated, one-button operation, high safety performance, easy to clean, and can effectively reduce labor intensity, improve production efficiency and drug quality.

Description

Technical Field

[0001] The invention relates to a flat plate sedimentation type fully automatic centrifuge. Background Art

[0002] Sedimentation centrifuges are widely used in the field of pharmaceutical production. Existing sedimentation centrifuges have complex operations and many unreasonable designs, which affect production efficiency. The specific defects are as follows: 1. The traditional sedimentation centrifuge has a three-legged structure, many sanitary dead corners, poor safety performance, the gas in the body is not closed, and the toxic and harmful gases cannot be effectively treated, which causes great harm to the operator's body and does not meet GMP requirements; 2. After centrifugation of the traditional sedimentation centrifuge, the solid phase needs to be scraped manually and transferred to another container for secondary dissolution processing of the solid phase material. The steps are complicated, the labor intensity is high, and the solid phase material is easy to remain and breed bacteria; 3. The traditional sedimentation centrifuge drum is equipped with a baffle plate. There are many sanitary dead corners between the baffle plates, which are difficult to clean, and automatic scraping, stirring, and dissolution cannot be achieved after adding the baffle plate; 4. The traditional sedimentation centrifuge is manually operated throughout the process, and 4 to 5 people are required for every 5 centrifuges. The steps are complicated, the labor intensity is high, and the labor cost is high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a flat plate sedimentation type fully automatic centrifuge, which is simple to operate, reasonable in design and can effectively improve production efficiency.

[0004] In order to solve the above technical problems, the present invention provides a flat plate sedimentation type fully automatic centrifuge, which is characterized by comprising a bottom plate, a motor, a drum, and a casing;

[0005] The bottom plate is arranged horizontally, and a number of damping shock absorbers are arranged on the lower side of the bottom plate;

[0006] The drum comprises a drum body, which is a vertically arranged cylindrical body with an open upper side, an annular liquid blocking plate extending horizontally inward is arranged at the upper open side of the drum body, a bearing is arranged at the upper position of the bottom plate corresponding to the center of the drum, a rotating shaft is arranged on the bearing, and the upper side of the rotating shaft is coaxially connected with the drum;

[0007] The motor is installed on the upper side of the bottom plate, and the output shaft of the motor is connected to the rotating shaft through a belt drive;

[0008] The casing is a vertically arranged cylinder with an open upper side, the casing covers the outer side of the drum, the upper side of the casing exceeds the upper side of the drum, the lower side of the casing is fixedly connected to the bottom plate, and an upper cover matching the casing is provided on the upper side of the casing;

[0009] A closing assembly is provided on the outside of the casing, and the closing assembly includes a hinge seat, a rotating arm and a cover-opening cylinder. The hinge seat is fixedly connected to the upper part of the outer wall of the casing, one end of the rotating arm in the length direction is fixedly connected to the upper cover, and the other end of the rotating arm in the length direction extends outward from the upper cover. The middle part of the rotating arm is hinged to the hinge seat, and the other end of the rotating arm is hinged to the piston rod of the cover-opening cylinder. The bottom of the cover-opening cylinder is hinged to the bottom plate.

[0010] The upper cover is equipped with explosion-proof lamp, material inlet and outlet device, scraper mechanism, liquid inlet pipe, material level detector and observation port;

[0011] The explosion-proof lamp is arranged on the upper side of the upper cover, and the lower side of the explosion-proof lamp is connected to the inner side of the casing;

[0012] The inlet and outlet device comprises a vertically arranged inlet and outlet pipe, a first cylinder housing, a first reset housing and a first sliding piston. The first cylinder housing and the first reset housing are arranged up and down, the first cylinder housing and the first reset housing are connected and fixed by a first guide plate, and the outer side of the middle part of the first reset housing is fixedly connected to the upper cover; the first cylinder housing and the first guide plate form a closed first cylinder cavity, and the first reset housing and the first guide plate form a closed first reset cavity. The inlet and outlet pipes vertically penetrate the first cylinder housing, the first guide plate and the first reset housing in sequence, and the upper side and the lower side of the inlet and outlet pipes respectively exceed the upper side of the first cylinder housing and the lower side of the first reset housing, and the lower side of the inlet and outlet pipes The first cylinder housing, the first guide plate, and the first reset housing extend into the drum from the side, and the inlet and outlet pipes can reciprocate vertically relative to the first cylinder housing, the first guide plate, and the first reset housing; the first sliding piston is sleeved on the outer wall of the inlet and outlet pipes, the first sliding piston is in the first cylinder cavity, and the first sliding piston divides the first cylinder cavity into a first chamber and a second chamber that are independent of each other, and the first cylinder housing is respectively provided with first air holes that communicate with the first chamber and the second chamber; a first fixed convex ring is also provided on the outer wall of the inlet and outlet pipes, the first fixed convex ring is in the first reset cavity, and a first reset spring is also sleeved on the outer wall of the inlet and outlet pipes, one end of the first reset spring abuts against the lower side surface of the first fixed convex ring, and the other end abuts against the lower side wall of the first reset cavity;

[0013] The scraper mechanism comprises a shell, a scraper plate and a scraper shaft; the scraper shaft is arranged in the shell, the middle part of the shell is fixedly connected to the upper cover of the centrifuge, vertically extends out from the lower side of the shell and extends into the drum; the scraper plate at the lower end of the scraper shaft is a vertically arranged rectangular plate, one side of the scraper plate in the length direction is connected to the lower part of the scraper shaft, a plurality of through grooves arranged at intervals along the length direction of the scraper plate are arranged on the lower side of the scraper plate, an L-shaped rod is arranged above each through groove at one side of the thickness direction of the scraper plate, the L-shaped rod is composed of a horizontal part and a vertical part connected end to end, and the horizontal part is connected to the scraper plate on the side away from the vertical part along its length direction , the vertical part extends vertically downward along one side away from the horizontal part in the length direction thereof, and the lower side of the vertical part is flush with the lower side of the scraper plate, the scraper shaft comprises a lifting cylinder and a rotating assembly, the scraper plate is connected to the lower part of the lifting cylinder body, the rotating assembly comprises a rotating chamber, a gear sleeve, a rack and two pistons, the rack and the two pistons are both in the rotating chamber, the two pistons are respectively fixed on both sides of the rack, the two pistons separate the two sides of the rotating chamber into two independent oil chambers, the two ends of the rotating chamber are respectively equipped with oil port joints identical to the two oil chambers, the gear sleeve is sleeved on the side wall of the lifting cylinder body, and the gear sleeve cooperates with the rack;

[0014] The liquid inlet pipe is arranged vertically, the middle part of the length direction of the liquid inlet pipe is fixedly connected to the upper cover, and the lower side of the liquid inlet pipe extends into the drum from the upper side of the drum;

[0015] The material level detector comprises a connecting rod and a detection plate, wherein the connecting rod is arranged vertically, the middle part of the connecting rod is fixedly connected to the upper cover, the lower side of the connecting rod extends into the drum from the upper side of the drum, and the detection plate is connected to the lower side of the connecting rod;

[0016] The observation port passes through the upper cover, and a viewing mirror made of transparent material is provided on the observation port;

[0017] A pumping device is also provided above the corresponding drum at the position of the casing, the pumping device comprises a horizontally arranged liquid taking pipe, a second cylinder shell, a second reset shell and a second sliding piston. The length direction of the liquid taking pipe is arranged along the radial direction of the drum. The side of the liquid taking device close to the central axis of the drum along the radial direction of the drum is set as the inner side, and the side away from the central axis of the drum is set as the outer side. The second cylinder shell and the second reset shell are arranged inside and outside. The second cylinder shell and the second reset shell are connected and fixed by the second guide plate, and the outer side of the middle part of the second reset shell is fixedly connected to the casing; the second cylinder shell and the second guide plate form a closed second cylinder cavity, and the second reset shell and the second guide plate form a closed second reset cavity. The liquid taking pipe vertically penetrates the second cylinder shell, the second guide plate and the second reset shell in sequence, and the front and rear sides of the liquid taking pipe correspond to the parts beyond the second cylinder shell respectively. On the front side and the rear side of the second reset shell, the inner side of the liquid extraction pipe extends into the drum and bends downward 180° to face the side wall of the drum. The mouth of the liquid extraction pipe is a round head, and liquid extraction holes are arranged on both sides of the round head. The liquid extraction pipe can reciprocate horizontally relative to the second cylinder shell, the second guide plate, and the second reset shell; the second sliding piston is sleeved on the outer wall of the liquid inlet and outlet pipe, the second sliding piston is in the second cylinder cavity, and the second sliding piston divides the second cylinder cavity into a third chamber and a fourth chamber independent of each other, and the second cylinder shell is respectively provided with second air holes communicating with the third chamber and the fourth chamber; a second fixed convex ring is also provided on the outer wall of the liquid extraction pipe, the second fixed convex ring is in the second reset cavity, and a second reset spring is also sleeved on the outer wall of the liquid extraction pipe, one end of the second reset spring abuts against the inner side surface of the second fixed convex ring, and the other end abuts against the inner side wall of the second reset cavity.

[0018] For the purpose of simple explanation, the flat plate sedimentation type fully automatic centrifuge described in the present invention is referred to as the centrifuge below.

[0019] The working process and internal principle of the centrifuge are as follows: first, the material to be centrifuged is injected into the drum through the inlet and outlet pipes for centrifugal operation. Due to the action of centrifugal force, the liquid phase and the solid phase are separated. Then, the liquid is pumped out through the automatically controlled liquid pumping device. The third chamber and the fourth chamber of the second cylinder cavity are respectively connected to the high-pressure gas source. By changing the pressure in the third chamber and the fourth chamber, the second sliding piston drives the entire liquid extraction pipe to move axially. The inner port of the liquid extraction pipe gradually approaches the high-speed rotating liquid material in the drum. During the liquid extraction process, the inner end of the liquid extraction pipe moves from the inside to the outside to extract the liquid phase, completing the liquid extraction operation. The second return spring cooperates with the second fixed convex ring of the liquid extraction pipe to provide an inward restoring force for the liquid extraction pipe. The liquid extraction pipe is more stable under the elastic force of the second return spring each time it moves. After the liquid phase is extracted by the liquid extraction device The remaining solid materials will stick to the inner wall of the centrifuge drum. At this time, the rotating assembly controls the scraper plate to rotate close to the inner wall of the drum by changing the pressure of the two oil pumps. When the distance from the inner wall of the drum is 8-10mm, it stops rotating and keeps the drum rotating at a low speed. As the drum rotates, the lifting cylinder controls the scraper plate to gradually move down. The materials attached to the inner wall of the drum are scraped off from top to bottom. After the scraping is completed, the scraper plate is reset and the drum stops running. At this time, the solvent for dissolving the solid materials is added to the drum through the liquid inlet pipe, and then the drum motor is started. The scraper plate rotates again to 8-10mm away from the inner wall of the drum, slowly descends to the bottom of the drum, and reciprocates up and down on the liquid surface. At this time, the scraper plate with a through groove is equivalent to a material rake, which crushes and stirs the solid materials at different liquid levels, plays the role of crushing the solid materials and stirring and dissolving them until the dissolution is complete.

[0020] When the scraper plate moves to the lowermost side of the drum, the drum stops rotating and the scraping is completed; at this time, the solvent for dissolving the solid-phase material is introduced into the drum through the liquid inlet pipe, and then the drum motor is started again. At this time, the scraper plate with a through groove is equivalent to a material rake, which plays the role of crushing the solid-phase material and stirring and dissolving until the solid-phase material is completely dissolved; finally, the solvent that has dissolved the solid-phase material is extracted through an automatically controlled inlet and outlet device, and the first chamber and the second chamber of the first cylinder cavity are respectively connected to the high-pressure gas source. By changing the pressure in the first chamber and the second chamber, the first sliding piston drives the entire inlet and outlet pipe to move axially, and the lower side port of the inlet and outlet pipe moves downward to the bottom of the drum to extract the material; the first return spring cooperates with the first fixed convex ring of the inlet and outlet pipe to provide an upward restoring force for the inlet and outlet pipe. After each movement, the inlet and outlet pipe is subjected to the elastic force of the first return spring to make its operation more stable.

[0021] Advantages of this centrifuge: 1. This centrifuge uses a horizontal bottom plate instead of the tripod structure of the prior art, making the support structure of this centrifuge easy to clean. The weight of the bottom plate accounts for 20% to 30% of the total weight of this centrifuge, which can minimize the occurrence of resonance; 2. In conjunction with the support structure of this centrifuge, the inlet and outlet pipes are arranged on the upper cover, and the lower ends of the inlet and outlet pipes directly extend into the drum, so that the material distribution method of this centrifuge is changed from traditional manual feeding to fully automatic intermediate feeding, and the material distribution is more uniform; 3. The automatic liquid extraction device is easy to operate and saves manpower, and the liquid extraction pipe can be adjusted in position, which does not affect the centrifugal operation of this centrifuge during normal use, and can meet the needs of liquid extraction after centrifugal operation; 4. The drum adopts an embedded liquid blocking plate, which is simple to process, beautiful in appearance, and easy to clean , cancel the baffle plate structure, eliminate sanitary dead corners, and realize automatic unloading; 5. The scraping mechanism automatically performs the scraping operation, and after scraping, the solid phase material is directly crushed and stirred and dissolved in the drum without transferring the material, which can simplify the operation steps, improve efficiency and reduce costs. At the same time, due to the setting of the liquid guide plate, the solid phase material attached to the inner wall of the drum that cannot be scraped off can be washed off, thereby improving the scraping effect; 6. The operation process is fully automated and one-button operation greatly reduces the labor intensity and operation difficulty, and greatly saves labor costs; 7. The whole process is highly enclosed, eliminating contact with humans and other pollution sources, ensuring the quality of the medicine, and at the same time, toxic and harmful gases are centrally treated, which is safer and more environmentally friendly; In summary, this centrifuge is simple to operate, reasonably designed, and can effectively improve production efficiency.

[0022] In order to achieve better use effect of this centrifuge, the preferred solution is as follows:

[0023] Preferably, a first elbow arranged obliquely is provided on the lower side of the inlet and outlet pipes.

[0024] The first elbow at the lower side of the inlet and outlet pipes can play a certain role in guiding the flow, preventing liquid from splashing during feeding. During discharging, the first elbow can also be tilted close to the bottom of the drum, so that the discharging is more complete.

[0025] Preferably, a long liquid guide plate is provided on the upper side of the scraper plate, the length direction of the liquid guide plate is consistent with the length direction of the scraper plate, and the two sides of the length direction of the liquid guide plate are flush with the two sides of the length direction of the scraper plate respectively, the end of the liquid guide plate close to the scraper shaft in the length direction is inclined toward the side away from the L-shaped rod, and the end of the liquid guide plate away from the scraper shaft in the length direction is inclined toward the side close to the L-shaped rod.

[0026] The solvent rotates with the drum. The moving liquid hits the scraper plate and is agitated and splashes upward along the scraper plate. The inclined liquid guide plate cooperates with the centrifugal force formed by the drum to guide the splashing liquid to the inner wall of the drum, which plays a role in flushing the inner wall of the drum, thereby flushing off the solid phase materials attached to the inner wall of the drum that cannot be scraped off.

[0027] Preferably, the lower side of the vertical portion is provided with a taper, and the lower side of the scraper plate and the side of the scraper plate in the length direction away from the lifting cylinder are both provided with a slope.

[0028] The solid phase material after centrifugation is relatively hard. The slope set on the scraper plate is equivalent to a cutting edge, which can facilitate the scraper plate to be inserted into the solid phase material for scraping. The taper on the lower side of the vertical part facilitates insertion into the solid phase material, which can make it easier to break the solid phase material, thereby accelerating dissolution.

[0029] Preferably, a second elbow arranged obliquely is provided on the lower side of the liquid inlet pipe.

[0030] The second elbow at the lower side of the liquid inlet pipe can play a certain role in guiding the flow and prevent the liquid from splashing when the liquid is inlet.

[0031] Preferably, a circumferentially arranged water channel is provided above the upper cover, the water channel is in the shape of a large half circle, a water inlet is provided on the upper side of the water channel, a plurality of vertically arranged water outlet pipes are provided on the lower side of the arc-shaped water channel, the lower side of the water outlet pipes passes through the upper cover from top to bottom, and a spherical nozzle is provided on the lower side of each water outlet pipe.

[0032] The water channel and the corresponding spherical nozzle can spray and clean the inside of the centrifuge, which is easy to use and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of this centrifuge.

[0034] Figure 2 This is a top view of the centrifuge.

[0035] Figure 3 It is a structural schematic diagram of the scraping mechanism of the centrifuge.

[0036] Figure 4 It is a top view of the scraper mechanism of the centrifuge.

[0037] Figure 5 It is a structural schematic diagram of the scraper plate in the scraper mechanism of the centrifuge.

[0038] Figure 6 It is a structural schematic diagram of the centrifuge pumping device.

[0039] Figure 7 It is a structural schematic diagram of the feeding and discharging device of the centrifuge. DETAILED DESCRIPTION

[0040] See also Figure 1-Figure 7 , Figure 1 and Figure 2It is only used as a schematic diagram of the overall structure of the centrifuge, and the detailed structures of the scraping mechanism, the pumping device, and the inlet and outlet devices are shown in Figure 3-Figure 7 shall prevail.

[0041] A flat plate sedimentation type fully automatic centrifuge, comprising a bottom plate 1, a motor 2, a rotating drum 3, and a casing 4;

[0042] The bottom plate 1 is arranged horizontally, and a plurality of damping shock absorbers 11 are arranged on the lower side of the bottom plate 1;

[0043] The drum 3 includes a drum body 31, which is a vertically arranged cylindrical body with an open upper side. An annular liquid blocking plate 32 extending horizontally inward is provided at the upper open side of the drum body 31. A bearing 12 is provided at the upper position of the bottom plate 1 corresponding to the center of the drum 3. A rotating shaft 13 is provided on the bearing 12. The upper side of the rotating shaft 13 is coaxially connected to the drum 3.

[0044] The motor 2 is installed on the upper side of the bottom plate 1, and the output shaft of the motor 2 is connected to the rotating shaft 13 through a belt 14;

[0045] The casing 4 is a vertically arranged cylinder with an open upper side, the casing 4 covers the outer side of the drum 3, the upper side of the casing 4 exceeds the upper side of the drum 3, the lower side of the casing 4 is fixedly connected to the bottom plate 1, and an upper cover 41 matching the casing 4 is provided on the upper side of the casing 4;

[0046] A closing assembly is provided on the outside of the casing 4, and the closing assembly includes a hinge seat 42, a rotating arm 44 and a cover opening cylinder 43. The hinge seat 42 is fixedly connected to the upper part of the outer wall of the casing 4, one end of the rotating arm 44 in the length direction is fixedly connected to the upper cover 41, and the other end of the rotating arm 44 in the length direction extends outward from the upper cover 41. The middle part of the rotating arm 44 is hinged to the hinge seat 42, and the other end of the rotating arm 44 is hinged to the piston rod of the cover opening cylinder 43. The bottom of the cover opening cylinder 43 is hinged to the bottom plate 1;

[0047] The upper cover 41 is provided with an explosion-proof lamp 411, a material feeding and discharging device 5, a material scraping mechanism 6, a liquid inlet pipe 7, a material level detector 8, and an observation port;

[0048] The explosion-proof lamp 411 is disposed on the upper side of the upper cover 41, and the lower side of the explosion-proof lamp 411 is connected to the inner side of the housing 4;

[0049] The feeding and discharging device 5 comprises a vertically arranged feeding and discharging pipe 51, a first cylinder housing 52, a first reset housing 53 and a first sliding piston 521. The first cylinder housing 52 and the first reset housing 53 are arranged up and down. The first cylinder housing 52 and the first reset housing 53 are connected and fixed by a first guide plate 54, and the outer side of the middle part of the first reset housing 53 is fixedly connected to the upper cover 41; the first cylinder housing 52 and the first guide plate 54 form a closed first cylinder cavity 522, and the first reset housing 53 and the first guide plate 54 form a closed first reset cavity 531. The feeding and discharging pipe 51 vertically penetrates the first cylinder housing 52, the first guide plate 54 and the first reset housing 53 in sequence, and the upper side and the lower side of the feeding and discharging pipe 51 respectively exceed the upper side of the first cylinder housing 52 and the lower side of the first reset housing 53, and the lower side of the feeding and discharging pipe 51 extends into the drum 3. There is a first elbow 511 arranged obliquely, and the inlet and outlet pipe 51 can reciprocate in the vertical direction relative to the first cylinder housing 52, the first guide plate 54, and the first reset housing 53; the first sliding piston 521 is sleeved on the outer wall of the inlet and outlet pipe 51, the first sliding piston 521 is in the first cylinder cavity 522, and the first sliding piston 521 divides the first cylinder cavity 522 into a first chamber 523 and a second chamber 524 that are independent of each other, and the first cylinder housing 52 is respectively provided with first air holes that communicate with the first chamber 523 and the second chamber 524; a first fixed convex ring 532 is also provided on the outer wall of the inlet and outlet pipe 51, the first fixed convex ring 532 is in the first reset cavity 531, and a first reset spring 533 is also sleeved on the outer wall of the inlet and outlet pipe 51, one end of the first reset spring 533 abuts against the lower side of the first fixed convex ring 532, and the other end abuts against the lower side wall of the first reset cavity 531;

[0050] The scraper mechanism 6 comprises a shell 61, a scraper plate 62 and a scraper shaft 63; the scraper shaft 63 is arranged in the shell 61, the middle of the shell 61 is fixedly connected to the centrifuge cover 41, vertically extends out of the lower side of the shell 61 and extends into the drum 3; the scraper plate 62 at the lower end of the scraper shaft 63 is a vertically arranged rectangular plate, one side of the scraper plate 62 in the length direction is connected to the lower part of the scraper shaft 63, and the lower side of the scraper plate 62 is provided with a plurality of through grooves 622 arranged at intervals along the length direction of the scraper plate 62, and the position on one side of the scraper plate 62 in the thickness direction corresponds to the upper side of each through groove 622 An L-shaped rod 62 is provided, and the L-shaped rod 62 is composed of a horizontal part 651 and a vertical part 652 connected end to end. The horizontal part 651 is connected to the scraper plate 62 on the side away from the vertical part 652 along its length direction, and the vertical part 652 extends vertically downward on the side away from the horizontal part 651 along its length direction, and the lower side of the vertical part 652 is flush with the lower side of the scraper plate 62. The lower side of the vertical part 652 is provided with a taper, and the lower side of the scraper plate 62 and the side of the scraper plate 62 in the length direction away from the lifting cylinder 631 are both provided with a slope. A long liquid guide plate 621 is provided on the upper side of the scraper plate 62. The length direction of the liquid guide plate 621 is consistent with the length direction of the scraper plate 62, and the two sides of the length direction of the liquid guide plate 621 are flush with the two sides of the length direction of the scraper plate 62 respectively. The end of the liquid guide plate 621 close to the scraper shaft 63 in the length direction is inclined toward the side away from the L-shaped rod 62, and the end of the liquid guide plate 621 away from the scraper shaft 63 in the length direction is inclined toward the side close to the L-shaped rod 62. The scraper shaft 63 includes a lifting cylinder 631 and a rotating assembly 64. The scraper plate 62 is connected to the lower part of the cylinder body of the lifting cylinder 631. The rotating assembly 64 includes a rotating chamber 641, a gear sleeve 642, a rack 643 and two pistons 644. The rack 643 and the two pistons 644 are both in the rotating chamber 641. The two pistons 644 are respectively fixed on both sides of the rack 643. The two pistons 644 separate the two sides of the rotating chamber 641 into two independent oil chambers. The two ends of the rotating chamber 641 are respectively installed with oil port joints 645 that are the same as the two oil chambers. The gear sleeve 642 is sleeved on the side wall of the cylinder body of the lifting cylinder 631, and the gear sleeve 642 cooperates with the rack 643.

[0051] The liquid inlet pipe 7 is arranged vertically, the middle part of the length direction of the liquid inlet pipe 7 is fixedly connected to the upper cover 41, the lower side of the liquid inlet pipe 7 extends from the upper side of the drum 3 into the drum 3, and the lower side of the liquid inlet pipe 7 is provided with a second elbow 71 arranged obliquely;

[0052] The material level detector 8 comprises a connecting rod 81 and a detection plate 82. The connecting rod 81 is arranged vertically, the middle part of the connecting rod 81 is fixedly connected to the upper cover 41, the lower side of the connecting rod 81 extends from the upper side of the drum 3 into the drum 3, and the detection plate 82 is connected to the lower side of the connecting rod 81;

[0053] The observation port passes through the upper cover 41, and a viewing mirror 412 made of a transparent material is provided on the observation port;

[0054] A pumping device 9 is also provided above the housing 4 at a position corresponding to the drum 3. The pumping device 9 includes a horizontally arranged liquid taking pipe 91, a second cylinder housing 92, a second reset housing 93 and a second sliding piston 921. The length direction of the liquid taking pipe 91 is arranged along the radial direction of the drum 3. The pumping device 9 is arranged such that the side close to the central axis of the drum 3 along the radial direction of the drum 3 is the inner side and the side away from the central axis of the drum 3 is the outer side. The second cylinder housing 92 and the second reset housing 93 are arranged inside and outside. The second cylinder housing 92 and the second reset housing 93 are connected. The second guide plate 94 is connected and fixed, and the outer side of the middle part of the second reset shell 93 is fixedly connected to the housing 4; the second cylinder shell 92 and the second guide plate 94 form a closed second cylinder cavity 922, and the second reset shell 93 and the second guide plate 94 form a closed second reset cavity 931, and the liquid taking pipe 91 vertically penetrates the second cylinder shell 92, the second guide plate 94, and the second reset shell 93 in sequence, and the front side and the rear side of the liquid taking pipe 91 respectively correspond to the front side of the second cylinder shell 92 and the second reset shell 93. On the rear side of the body 93, the inner side of the liquid taking pipe 91 extends into the drum 3 and bends downward 180 degrees to face the side wall of the drum 3. The mouth of the liquid taking pipe 91 is a round head, and liquid taking holes 911 are arranged on both sides of the round head. The liquid taking pipe 91 can reciprocate horizontally relative to the second cylinder housing 92, the second guide plate 94, and the second reset housing 93; the second sliding piston 921 is sleeved on the outer wall of the liquid taking pipe 91, the second sliding piston 921 is in the second cylinder cavity 922, and the second sliding piston 921 divides the second cylinder cavity 922 into The liquid taking tube 91 is divided into a third chamber 923 and a fourth chamber 924 which are independent of each other. The second cylinder housing 92 is provided with second air holes which are communicated with the third chamber 923 and the fourth chamber 924 respectively. A second fixed convex ring 932 is also provided on the outer wall of the liquid taking tube 91. The second fixed convex ring 932 is located in the second reset cavity 931. A second reset spring 933 is also mounted on the outer wall of the liquid taking tube 91. One end of the second reset spring 933 abuts against the inner side surface of the second fixed convex ring 932, and the other end abuts against the inner wall of the second reset cavity 931.

[0055] A circumferentially arranged water channel 45 is also provided above the upper cover 41. The water channel 45 is in the shape of a large half circle. A water inlet 451 is provided on the upper side of the water channel 45. A plurality of vertically arranged water outlet pipes 452 are provided on the lower side of the arc-shaped water channel 45. The lower side of the water outlet pipes 452 passes through the upper cover 41 from top to bottom, and a spherical nozzle 453 is provided on the lower side of each water outlet pipe 452.

[0056] The working process and internal principle of the centrifuge are as follows: first, the material to be centrifuged is injected into the drum 3 through the inlet and outlet pipes 51 for centrifugal operation. Due to the centrifugal force, the liquid phase and the solid phase are separated. Then, the liquid is pumped through the automatically controlled pumping device 9. The third chamber 923 and the fourth chamber 924 of the second cylinder cavity 922 are respectively connected to the high-pressure gas source. By changing the pressure in the third chamber 923 and the fourth chamber 924, the second sliding piston 921 drives the entire liquid extraction pipe 91 to move axially. The inner port of the liquid extraction pipe 91 gradually approaches the liquid material rotating at a high speed in the drum 3. During the liquid extraction process, the inner end of the liquid extraction pipe 91 moves from the inside to the outside to extract the liquid phase, completing the liquid extraction operation; the second reset spring 933 cooperates with the second fixed convex ring 932 of the liquid extraction pipe 91 to provide an inward restoring force for the liquid extraction pipe 91. The liquid extraction pipe 91 is subjected to the elastic force of the second reset spring 933 each time it moves, and the movement is more stable; the solid phase remaining after the liquid phase is extracted by the pumping device 9 The material will stick to the inner wall of the centrifuge drum 3. Connect the two oil port joints 645 of the rotating assembly 64 to the oil pumps respectively. At this time, the rotating assembly 64 controls the scraper plate 62 to rotate close to the inner wall of the drum 3 by changing the pressure of the two oil pumps. When the distance from the inner wall of the drum 3 is 8-10mm, it stops rotating and keeps the drum 3 rotating at a low speed. As the drum 3 rotates, the lifting cylinder 631 controls the scraper plate 62 to gradually move downward. The material attached to the inner wall of the drum 3 is scraped off from top to bottom in sequence. After the scraping is completed, the scraper The plate 62 is reset, and the drum 3 stops running. At this time, the solvent for dissolving the solid phase material is added into the drum 3 through the liquid inlet pipe 7, and then the drum motor 2 is started. The scraper plate 62 is rotated again to a distance of 8-10 mm from the inner wall of the drum 3, and slowly descends to the lower side of the drum 3, and reciprocates up and down on the liquid surface. At this time, the scraper plate 62 with the through groove 622 is equivalent to a material rake, which crushes and stirs the solid phase materials at different liquid levels, thereby crushing the solid phase materials and stirring and dissolving them until the dissolution is complete. Finally, the solvent that has dissolved the solid-phase material is extracted through the automatically controlled inlet and outlet device 5, and the first chamber 523 and the second chamber 524 of the first cylinder cavity 522 are respectively connected to the high-pressure gas source. By changing the pressure in the first chamber 523 and the second chamber 524, the first sliding piston 521 drives the entire inlet and outlet pipe 51 to move axially, and the lower side port of the inlet and outlet pipe 51 moves downward to the bottom of the drum 3 to extract the material; the first return spring 533 cooperates with the first fixed convex ring 532 of the inlet and outlet pipe 51 to provide an upward restoring force for the inlet and outlet pipe 51. After each movement, the inlet and outlet pipe 51 is subjected to the elastic force of the first return spring 533 to make its operation more stable.

[0057] Advantages of this centrifuge: 1. This centrifuge uses a horizontal bottom plate 1 instead of the tripod structure of the prior art, so that the support structure of this centrifuge is easy to clean. The weight of the bottom plate 1 accounts for 20% to 30% of the total weight of the centrifuge, which can minimize the occurrence of resonance; 2. In conjunction with the support structure of this centrifuge, the feed inlet and outlet pipes 51 are arranged on the upper cover 41, and the lower end of the feed inlet and outlet pipes 51 directly extends into the drum 3, so that the material distribution method of this centrifuge is changed from traditional manual feeding to fully automatic intermediate feeding, and the material distribution is more uniform; 3. The automatic liquid extraction device 9 is simple to operate and saves manpower, and the liquid extraction pipe 91 can adjust the position, which does not affect the centrifugal operation of this centrifuge during normal use, and can meet the needs of liquid extraction after centrifugal operation; 4. The drum 3 adopts an embedded liquid blocking plate 32, which is simple to process and beautiful in appearance. Easy to clean, the baffle plate structure is cancelled, the sanitary dead corner is eliminated, and automatic unloading is realized; 5. The scraping mechanism 6 automatically performs the scraping operation, and after scraping, the solid phase material is directly crushed and stirred and dissolved in the drum 3, without transferring the material, which can simplify the operation steps, improve efficiency, and reduce costs. At the same time, due to the arrangement of the liquid guide plate 621, the solid phase material attached to the inner wall of the drum 3 that cannot be scraped off can be washed off, thereby improving the scraping effect; 6. The operation process is fully automated and one-button operation greatly reduces the labor intensity and operation difficulty, and greatly saves labor costs; 7. The whole process is highly enclosed, eliminating contact with humans and other pollution sources, ensuring the quality of the medicine, and at the same time, toxic and harmful gases are centrally treated, which is safer and more environmentally friendly; In summary, the centrifuge is simple to operate and reasonably designed, which can effectively improve production efficiency.

[0058] The first elbow 511 at the lower side of the inlet and outlet pipe 51 can play a certain role in guiding the flow to prevent liquid splashing during feeding. During discharging, the first elbow 511 can also be inclined close to the bottom of the drum 3 to make the discharging more complete.

[0059] The solvent rotates with the drum 3 in the drum 3. The moving liquid will be agitated when it hits the scraper plate 62 and splash upward along the scraper plate 62. The inclined liquid guide plate 621 cooperates with the centrifugal force formed by the drum 3 to guide the splashing liquid to the inner wall of the drum 3, thereby flushing the inner wall of the drum 3, thereby flushing off the solid phase materials attached to the inner wall of the drum 3 that cannot be scraped off.

[0060] The solid phase material after centrifugation is relatively hard. The slope set on the scraper plate 62 is equivalent to a cutting edge, which can facilitate the scraper plate 62 to be inserted into the solid phase material for scraping. The taper on the lower side of the vertical portion 652 facilitates insertion into the solid phase material, which can make it easier to break the solid phase material, thereby accelerating dissolution.

[0061] The second elbow 71 at the lower side of the liquid inlet pipe 7 can play a certain role in guiding the flow and prevent the liquid from splashing when the liquid is inlet.

[0062] The water channel 45 and the corresponding spherical nozzle 453 can spray and clean the inside of the centrifuge, which is easy to use and saves manpower.

Claims

1. A flat plate sedimentation type fully automatic centrifuge, characterized in that: Including base plate, motor, drum and casing; The bottom plate is arranged horizontally, and a number of damping shock absorbers are arranged on the lower side of the bottom plate; The drum comprises a drum body, which is a vertically arranged cylindrical body with an open upper side, an annular liquid blocking plate extending horizontally inward is arranged at the upper open side of the drum body, a bearing is arranged at the upper position of the bottom plate corresponding to the center of the drum, a rotating shaft is arranged on the bearing, and the upper side of the rotating shaft is coaxially connected with the drum; The motor is installed on the upper side of the bottom plate, and the output shaft of the motor is connected to the rotating shaft through a belt drive; The casing is a vertically arranged cylinder with an open upper side, the casing covers the outer side of the drum, the upper side of the casing exceeds the upper side of the drum, the lower side of the casing is fixedly connected to the bottom plate, and an upper cover matching the casing is provided on the upper side of the casing; A closing assembly is provided on the outside of the casing, and the closing assembly includes a hinge seat, a rotating arm and a cover-opening cylinder. The hinge seat is fixedly connected to the upper part of the outer wall of the casing, one end of the rotating arm in the length direction is fixedly connected to the upper cover, and the other end of the rotating arm in the length direction extends outward from the upper cover. The middle part of the rotating arm is hinged to the hinge seat, and the other end of the rotating arm is hinged to the piston rod of the cover-opening cylinder. The bottom of the cover-opening cylinder is hinged to the bottom plate. The upper cover is equipped with explosion-proof lamp, material inlet and outlet device, scraper mechanism, liquid inlet pipe, material level detector and observation port; The explosion-proof lamp is arranged on the upper side of the upper cover, and the lower side of the explosion-proof lamp is connected to the inner side of the casing; The inlet and outlet device comprises a vertically arranged inlet and outlet pipe, a first cylinder housing, a first reset housing and a first sliding piston. The first cylinder housing and the first reset housing are arranged up and down, the first cylinder housing and the first reset housing are connected and fixed by a first guide plate, and the outer side of the middle part of the first reset housing is fixedly connected to the upper cover; the first cylinder housing and the first guide plate form a closed first cylinder cavity, and the first reset housing and the first guide plate form a closed first reset cavity. The inlet and outlet pipes vertically penetrate the first cylinder housing, the first guide plate and the first reset housing in sequence, and the upper side and the lower side of the inlet and outlet pipes respectively exceed the upper side of the first cylinder housing and the lower side of the first reset housing, and the lower side of the inlet and outlet pipes The first cylinder housing, the first guide plate, and the first reset housing extend into the drum from the side, and the inlet and outlet pipes can reciprocate vertically relative to the first cylinder housing, the first guide plate, and the first reset housing; the first sliding piston is sleeved on the outer wall of the inlet and outlet pipes, the first sliding piston is in the first cylinder cavity, and the first sliding piston divides the first cylinder cavity into a first chamber and a second chamber that are independent of each other, and the first cylinder housing is respectively provided with first air holes that communicate with the first chamber and the second chamber; a first fixed convex ring is also provided on the outer wall of the inlet and outlet pipes, the first fixed convex ring is in the first reset cavity, and a first reset spring is also sleeved on the outer wall of the inlet and outlet pipes, one end of the first reset spring abuts against the lower side surface of the first fixed convex ring, and the other end abuts against the lower side wall of the first reset cavity; The scraper mechanism comprises a shell, a scraper plate and a scraper shaft; the scraper shaft is arranged in the shell, the middle part of the shell is fixedly connected to the upper cover of the centrifuge, vertically extends out from the lower side of the shell and extends into the drum; the scraper plate at the lower end of the scraper shaft is a vertically arranged rectangular plate, one side of the scraper plate in the length direction is connected to the lower part of the scraper shaft, a plurality of through grooves arranged at intervals along the length direction of the scraper plate are arranged on the lower side of the scraper plate, an L-shaped rod is arranged above each through groove at one side of the thickness direction of the scraper plate, the L-shaped rod is composed of a horizontal part and a vertical part connected end to end, and the horizontal part is connected to the scraper plate on the side away from the vertical part along its length direction , the vertical part extends vertically downward along one side away from the horizontal part in the length direction thereof, and the lower side of the vertical part is flush with the lower side of the scraper plate, the scraper shaft comprises a lifting cylinder and a rotating assembly, the scraper plate is connected to the lower part of the lifting cylinder body, the rotating assembly comprises a rotating chamber, a gear sleeve, a rack and two pistons, the rack and the two pistons are both in the rotating chamber, the two pistons are respectively fixed on both sides of the rack, the two pistons separate the two sides of the rotating chamber into two independent oil chambers, the two ends of the rotating chamber are respectively equipped with oil port joints identical to the two oil chambers, the gear sleeve is sleeved on the side wall of the lifting cylinder body, and the gear sleeve cooperates with the rack; The liquid inlet pipe is arranged vertically, the middle part of the length direction of the liquid inlet pipe is fixedly connected to the upper cover, and the lower side of the liquid inlet pipe extends into the drum from the upper side of the drum; The material level detector comprises a connecting rod and a detection plate, wherein the connecting rod is arranged vertically, the middle part of the connecting rod is fixedly connected to the upper cover, the lower side of the connecting rod extends into the drum from the upper side of the drum, and the detection plate is connected to the lower side of the connecting rod; The observation port passes through the upper cover, and a viewing mirror made of transparent material is provided on the observation port; A pumping device is also provided above the corresponding drum at the position of the casing, the pumping device comprises a horizontally arranged liquid taking pipe, a second cylinder shell, a second reset shell and a second sliding piston. The length direction of the liquid taking pipe is arranged along the radial direction of the drum. The side of the liquid taking device close to the central axis of the drum along the radial direction of the drum is set as the inner side, and the side away from the central axis of the drum is set as the outer side. The second cylinder shell and the second reset shell are arranged inside and outside. The second cylinder shell and the second reset shell are connected and fixed by the second guide plate, and the outer side of the middle part of the second reset shell is fixedly connected to the casing; the second cylinder shell and the second guide plate form a closed second cylinder cavity, and the second reset shell and the second guide plate form a closed second reset cavity. The liquid taking pipe vertically penetrates the second cylinder shell, the second guide plate and the second reset shell in sequence, and the front and rear sides of the liquid taking pipe correspond to the parts beyond the second cylinder shell respectively. On the front side and the rear side of the second reset shell, the inner side of the liquid taking pipe extends into the drum and bends downward 180° to face the side wall of the drum. The mouth of the liquid taking pipe is a round head, and liquid taking holes are arranged on both sides of the round head. The liquid taking pipe can reciprocate horizontally relative to the second cylinder shell, the second guide plate and the second reset shell; the second sliding piston is sleeved on the outer wall of the liquid inlet and outlet pipe, the second sliding piston is in the second cylinder cavity, and the second sliding piston divides the second cylinder cavity into a third chamber and a fourth chamber that are independent of each other. The second cylinder shell is respectively provided with second air holes that communicate with the third chamber and the fourth chamber; a second fixed convex ring is also arranged on the outer wall of the liquid taking pipe, the second fixed convex ring is in the second reset cavity, and a second reset spring is also sleeved on the outer wall of the liquid taking pipe, one end of the second reset spring abuts against the inner side surface of the second fixed convex ring, and the other end abuts against the inner side wall of the second reset cavity; A first elbow arranged obliquely is provided on the lower side of the inlet and outlet pipes; A long strip of liquid guide plate is provided on the upper side of the scraper plate, the length direction of the liquid guide plate is consistent with the length direction of the scraper plate, and the two sides of the liquid guide plate in the length direction are respectively flush with the two sides of the length direction of the scraper plate, and the end of the liquid guide plate in the length direction close to the scraper shaft is inclined toward the side away from the L-shaped rod, and the end of the liquid guide plate in the length direction away from the scraper shaft is inclined toward the side close to the L-shaped rod; The lower side of the vertical portion is provided with a taper, and the lower side of the scraper plate and the side of the scraper plate in the length direction away from the lifting cylinder are both provided with a slope; A second elbow arranged obliquely is provided on the lower side of the liquid inlet pipe; A circumferentially arranged water channel is also provided above the upper cover. The water channel is in the shape of a large half circle. A water inlet is provided on the upper side of the water channel. A plurality of vertically arranged water outlet pipes are provided on the lower side of the arc-shaped water channel. The lower side of the water outlet pipe passes through the upper cover from top to bottom, and a spherical nozzle is provided on the lower side of each water outlet pipe.

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