Safety protection structure of centrifugal machine for laboratory

Abstract

The utility model discloses a laboratory centrifuge safety protection structure which comprises an equipment support, an equipment body is fixedly connected to the equipment support, the equipment body comprises an equipment shell, a sealing cover is rotatably connected to the equipment shell, one side of the sealing cover is fixedly connected with a shifting piece, and the shifting piece is fixedly connected with a rotating shaft. A controller is fixedly connected to the side, close to the sealing cover, of the equipment shell, a shifting rod is movably connected to the controller, and the shifting rod is matched with the shifting piece. Through the equipment, the rotor can be kept horizontally moving downwards, the rotor and the rotating shaft can be automatically clamped, the situation that the rotating shaft cannot rotate due to the fact that the rotor deviates on the rotating shaft is avoided, abrasion between the rotating shaft and the equipment shell can be reduced under the action of the protective cover and the bearing pedestal, and the service life of the equipment is prolonged. And it can be guaranteed that no large vibration is generated during internal work, and when centrifugation is finished, the purpose of speed reduction can be achieved by pressing the pressing plate at the bottom.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a safety protection structure for a laboratory centrifuge. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquids from solid particles or components in a mixture of liquids and liquids. Centrifuges are mainly used to separate solid particles from liquids in suspensions, or to separate two immiscible liquids of different densities in emulsions. It is a commonly used instrument in biological experiments.

[0003] Patent application number "CN202021829291.2" describes "a laboratory centrifuge for biological teaching, including a centrifuge body, which has the effect of conveniently and automatically controlling the centrifuge body to stop running, and at the same time conveniently limits the position of the centrifuge body that has left the starting position on the laboratory bench to avoid personal injury to the experimenter."

[0004] However, the device did not take into account that when installing or replacing the rotor inside the centrifuge, the rotor needs to be aligned with the shaft and kept horizontal to prevent the rotor from offsetting on the shaft. In addition, since the rotor itself is heavy and the force required to remove it must be balanced, it is difficult to remove it from the centrifuge due to uneven force on the rotor.

[0005] Therefore, the utility model provides a laboratory centrifuge safety protection structure to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a safety protection structure for a laboratory centrifuge, which solves the above-mentioned problem of ensuring that the rotor always remains in a horizontal state during installation and does not deviate when installed on the rotating shaft, causing the centrifuge to fail to work.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a laboratory centrifuge safety protection structure, including an equipment bracket, the equipment bracket is fixedly connected to an equipment body, the equipment body includes an equipment shell, a sealing cover is rotatably connected to the equipment shell, a paddle is fixedly connected to one side of the sealing cover, a controller is fixedly connected to the side of the equipment shell close to the sealing cover, a paddle is movably connected to the controller, and the paddle matches the paddle, a control switch is provided on the controller, an electric push rod is fixedly connected to the inside of the equipment shell, and a tenon is fixedly connected to the output shaft of the electric push rod, an isolation cover is movably connected to the bottom of the equipment shell, and a groove matching the tenon on the electric push rod is provided at the bottom of the isolation cover, and the servo motor, the electric push rod and the controller are signal connected.

[0008] Preferably: a plurality of shock absorbing mechanisms are fixedly connected to the equipment bracket, the shock absorbing mechanism includes a shock absorbing cover, an adjusting block is arranged inside the shock absorbing cover, a connecting rod is fixedly connected between the adjusting block and the fixed block via an elastic component, and the elastic component is respectively fixed to the upper and lower ends of the connecting rod, and the fixed block is fixedly connected to the equipment housing.

[0009] Preferably: the bottom of the device housing is fixedly connected with a deceleration mechanism, the deceleration mechanism includes a fixed frame, the bottom of the fixed frame is rotatably connected with a pressure plate, and the upper end of the fixed frame is also rotatably connected with a pull rod, the end of the pull rod is movably connected with a deceleration bar, and the deceleration bar is movably connected to the bottom of the device housing.

[0010] Preferably: an inner cavity is provided inside the device housing, a servo motor is fixedly connected to the outer side of the device housing, the servo motor is transmission-connected to a rotating shaft, the bottom of the rotating shaft is movably connected to a bearing seat, the bottom of the bearing seat is fixedly connected to a protective cover, the protective cover is fixedly connected to the device housing, and the electric push rod is fixedly connected to both sides of the protective cover.

[0011] Preferably, the isolation cover is sleeved on the rotating shaft, and the top end of the rotating shaft is movably connected with a fixing cap for fixing the rotor on the rotating shaft.

[0012] Preferably, a sealing ring for sealing is fixedly connected at the interface between the device housing and the sealing cover, and a shaft seal for preventing the shaft from deflecting and ensuring sealing is fixedly connected at the interface between the rotating shaft and the bottom of the device housing.

[0013] Beneficial Effects

[0014] The utility model provides a safety protection structure for a laboratory centrifuge. Compared with the prior art, it has the following beneficial effects:

[0015] (1) The safety protection structure of the laboratory centrifuge can control the lever to rotate through the controller so that the lever contacts the paddle, thereby opening the sealing cover to facilitate the installation of the rotor and the materials to be centrifuged. At the same time, the controller can also control the electric push rod to push the isolation cover out of the inside of the equipment housing. Since the rotor itself is heavy, the rotor is lifted by the isolation cover to facilitate the installation and removal of the rotor. The isolation cover is started by the controller to keep the rotor horizontal and move downward, and the rotor can be automatically engaged with the shaft to prevent the rotor from offsetting on the shaft and causing the shaft to be unable to rotate.

[0016] (2) The safety protection structure of the laboratory centrifuge drives the rotating shaft to rotate through the rotation of the servo motor. Under the action of the protective cover and the bearing seat, the wear between the rotating shaft and the equipment housing can be reduced. At the same time, the connecting rod and elastic component arranged between the outer fixed block and the adjustment block of the equipment housing can ensure that the rotating shaft inside the inner cavity will not generate large vibration during operation, thereby affecting the centrifugal efficiency. When the centrifugation is completed, the pressure plate at the bottom is pressed to drive the pull rod to move, so that the speed reduction strip is deformed and contacts the transmission wheel at the bottom of the rotating shaft, thereby achieving the purpose of deceleration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the external structure of the main body of the device of the utility model;

[0018] Figure 2 This is a working state diagram of the main structure of the equipment of the utility model;

[0019] Figure 3 It is a cross-sectional stereoscopic diagram of the shock absorbing mechanism structure of the utility model;

[0020] Figure 4 It is a cross-sectional stereoscopic diagram of the speed reduction mechanism structure of the utility model.

[0021] In the figure, 1. equipment bracket; 2. equipment body; 201. equipment shell; 202. inner cavity; 203. servo motor; 204. bearing seat; 205. protective cover; 206. rotating shaft; 207. fixing cap; 208. electric push rod; 209. isolation cover; 210. groove; 211. sealing cover; 212. paddle; 213. controller; 214. paddle; 215. control switch; 3. shock absorbing mechanism; 301. shock absorbing cover; 302. adjusting block; 303. connecting rod; 304. elastic component; 305. fixing block; 4. speed reduction mechanism; 401. fixing frame; 402. pressure plate; 403. pull rod; 404. speed reduction strip. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] See also Figures 1 to 4A safety protection structure for a laboratory centrifuge includes an equipment support 1, the equipment support 1 is fixedly connected to an equipment body 2, the equipment body 2 includes an equipment housing 201, a sealing cover 211 is rotatably connected to the equipment housing 201, a paddle 212 is fixedly connected to one side of the sealing cover 211, a controller 213 is fixedly connected to one side of the equipment housing 201 close to the sealing cover 211, a lever 214 is movably connected to the controller 213, and the lever 214 matches the paddle 212, and the controller 213 is A control switch 215 is provided, an electric push rod 208 is fixedly connected to the inside of the device housing 201, and a tenon is fixedly connected to the output shaft of the electric push rod 208, an isolation cover 209 is movably connected to the bottom of the device housing 201, and a groove 210 matching the tenon on the electric push rod 208 is opened at the bottom of the isolation cover 209, the servo motor 203, the electric push rod 208 and the controller 213 are connected by signal, the isolation cover 209 is sleeved on the rotating shaft 206, and the top of the rotating shaft 206 is movably connected to The rotor is fixed to a fixing cap 207 on the rotating shaft 206, a sealing ring for sealing is fixedly connected at the interface between the equipment housing 201 and the sealing cover 211, and a shaft seal for preventing the rotating shaft 206 from deflecting and ensuring sealing is fixedly connected at the bottom interface between the rotating shaft 206 and the equipment housing 201. The controller 213 can control the lever 214 to rotate so that the lever 214 contacts the paddle 212, thereby opening the sealing cover 211 to facilitate the installation of the rotor and the material to be centrifuged. At the same time, the controller 213 can also control the electric push rod 208 to push the isolation cover 209 out of the interior of the equipment housing 201. Since the rotor itself is heavy, the rotor is lifted by the isolation cover 209 to facilitate the installation and removal of the rotor. At this time, the rotor to be installed is placed inside the isolation cover 209. At this time, the isolation cover 209 is started by the controller 213, so that the rotor is kept horizontally moving downward, and the rotor can be automatically engaged with the rotating shaft 206 to prevent the rotor from deflecting on the rotating shaft 206, thereby causing the rotating shaft 206 to be unable to rotate.

[0025] Embodiment 2:

[0026] See also Figures 1 to 4This embodiment provides a technical solution based on the first embodiment: a plurality of shock absorbing mechanisms 3 are fixedly connected to the equipment support 1, and the shock absorbing mechanism 3 includes a shock absorbing cover 301, and an adjusting block 302 is arranged inside the shock absorbing cover 301. A connecting rod 303 is fixedly connected between the adjusting block 302 and the fixing block 305 through an elastic component 304, and the elastic component 304 is respectively fixed to the upper and lower ends of the connecting rod 303, and the fixing block 305 is fixedly connected to the equipment housing 201, and a speed reduction mechanism 4 is fixedly connected to the bottom of the equipment housing 201, and the speed reduction mechanism 4 includes a fixing frame 401, and the fixing frame 4 The bottom of the device housing 201 is rotatably connected to a pressure plate 402, and the upper end of the fixed frame 401 is also rotatably connected to a pull rod 403, the end of the pull rod 403 is movably connected to a speed reduction strip 404, the speed reduction strip 404 is movably connected to the bottom of the device housing 201, the interior of the device housing 201 is provided with an inner cavity 202, the outer side of the device housing 201 is fixedly connected to a servo motor 203, the servo motor 203 is transmission-connected to a rotating shaft 206, the bottom of the rotating shaft 206 is movably connected to a bearing seat 204, the bottom of the bearing seat 204 is fixedly connected to a protective cover 205, and the protective cover 205 is fixedly connected to the outside of the device The housing 201 is mounted on the electric push rod 208, and the electric push rod 208 is fixedly connected to both sides of the protective cover 205. The fixing cap 207 can fix the rotor on the rotating shaft 206. At the same time, the control switch 215 is pressed to start the servo motor 203. The rotation of the servo motor 203 drives the rotating shaft 206 to rotate. Under the action of the protective cover 205 and the bearing seat 204, the wear between the rotating shaft 206 and the equipment housing 201 can be reduced. At the same time, the rotating shaft 206 and the bottom interface of the equipment housing 201 are fixedly connected with a shaft seal to prevent the rotating shaft 206 from deflecting and ensure sealing. At the same time, the outer fixing block 305 of the equipment housing 201 and the regulating The connecting rod 303 and the elastic component 304 arranged between the segments 302 can ensure that the rotating shaft 206 inside the inner cavity 202 will not generate large vibrations during operation, causing the equipment to be displaced or fall from a height, thereby affecting the centrifugal efficiency. Rotating the adjustment block 302 can control the elastic strength of the elastic component 304 to adjust the shock absorbing effect of the equipment. When the centrifugation is completed, by pressing the pressure plate 402 at the bottom, the pressure plate 402 drives the pull rod 403 to move, so that the speed reduction bar 404 is deformed and contacts the transmission wheel at the bottom of the rotating shaft 206, so as to achieve the purpose of deceleration.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] Working principle: When working, firstly, the controller 213 can be used to control the lever 214 to rotate, so that the lever 214 contacts the paddle 212, thereby opening the sealing cover 211, so as to facilitate the installation of the rotor and the material to be centrifuged. At the same time, the controller 213 can also control the electric push rod 208 to push the isolation cover 209 out from the inside of the equipment housing 201. Since the rotor itself is heavy, the rotor is lifted by the isolation cover 209 to facilitate the installation and removal of the rotor. At this time, the rotor to be installed is placed inside the isolation cover 209. At this time, the isolation cover 209 is started by the controller 213, so as to keep the rotor horizontal and move downward, and the rotor can be automatically engaged with the rotating shaft 206 to prevent the rotor from offsetting on the rotating shaft 206, thereby causing the rotating shaft 206 to be unable to rotate. The rotor can be fixed on the rotating shaft 206 by the fixing cap 207, and at the same time, the control switch 215 is pressed to start the servo motor 203, and the servo motor 203 rotates to drive The rotating shaft 206 rotates, and under the action of the protective cover 205 and the bearing seat 204, the wear between the rotating shaft 206 and the equipment housing 201 can be reduced. At the same time, the rotating shaft 206 and the bottom interface of the equipment housing 201 are fixedly connected with a shaft seal to prevent the rotating shaft 206 from deflecting and ensure sealing. At the same time, the connecting rod 303 and the elastic component 304 arranged between the outer fixed block 305 and the adjusting block 302 of the equipment housing 201 can ensure that the rotating shaft 206 inside the inner cavity 202 will not generate large vibrations during operation, causing the equipment to be displaced or fall from a high place, thereby affecting the centrifugal efficiency. Rotating the adjusting block 302 can control the elastic strength of the elastic component 304 to adjust the shock absorbing effect of the equipment. When the centrifugation is completed, by pressing the bottom pressure plate 402, the pressure plate 402 drives the pull rod 403 to move, so that the deceleration bar 404 is deformed and contacts with the transmission wheel at the bottom of the rotating shaft 206, so as to achieve the purpose of deceleration.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laboratory centrifuge safety protection structure, comprising an equipment support (1), characterized in that: The device support (1) is fixedly connected to a device body (2), the device body (2) comprising a device housing (201), a sealing cover (211) is rotatably connected to the device housing (201), a paddle (212) is fixedly connected to one side of the sealing cover (211), a controller (213) is fixedly connected to one side of the device housing (201) close to the sealing cover (211), a paddle (214) is movably connected to the controller (213), and the paddle (214) and the paddle (212) are rotatably connected to each other. 12), the controller (213) is provided with a control switch (215), the interior of the device housing (201) is fixedly connected with an electric push rod (208), and the output shaft of the electric push rod (208) is fixedly connected with a tenon, the bottom of the device housing (201) is movably connected with an isolation cover (209), and the bottom of the isolation cover (209) is provided with a groove (210) that matches the tenon on the electric push rod (208), and the electric push rod (208) and the controller (213) are connected by signal.

2. A laboratory centrifuge safety protection structure according to claim 1, characterized in that: A plurality of shock absorbing mechanisms (3) are fixedly connected to the equipment bracket (1), and the shock absorbing mechanisms (3) include a shock absorbing cover (301), an adjusting block (302) is arranged inside the shock absorbing cover (301), a connecting rod (303) is fixedly connected between the adjusting block (302) and the fixing block (305) via an elastic component (304), and the elastic component (304) is respectively fixed to the upper and lower ends of the connecting rod (303), and the fixing block (305) is fixedly connected to the equipment housing (201).

3. A laboratory centrifuge safety protection structure according to claim 1, characterized in that: The bottom of the device housing (201) is fixedly connected to a deceleration mechanism (4), and the deceleration mechanism (4) includes a fixed frame (401), the bottom of the fixed frame (401) is rotatably connected to a pressure plate (402), and the upper end of the fixed frame (401) is also rotatably connected to a pull rod (403), the end of the pull rod (403) is movably connected to a deceleration bar (404), and the deceleration bar (404) is movably connected to the bottom of the device housing (201).

4. A laboratory centrifuge safety protection structure according to claim 1, characterized in that: An inner cavity (202) is provided inside the device housing (201); a servo motor (203) is fixedly connected to the outer side of the device housing (201); the servo motor (203) is drivingly connected to a rotating shaft (206); a bearing seat (204) is movably connected to the bottom of the rotating shaft (206); a protective cover (205) is fixedly connected to the bottom of the bearing seat (204); the protective cover (205) is fixedly connected to the device housing (201); and the electric push rod (208) is fixedly connected to both sides of the protective cover (205).

5. A laboratory centrifuge safety protection structure according to claim 1, characterized in that: The isolation cover (209) is sleeved on the rotating shaft (206), and a fixing cap (207) for fixing the rotor on the rotating shaft (206) is movably connected to the top end of the rotating shaft (206).

6. A laboratory centrifuge safety protection structure according to claim 4, characterized in that: A sealing ring for sealing is fixedly connected at the interface between the device housing (201) and the sealing cover (211), and a shaft seal for preventing the rotation shaft (206) from deflecting and ensuring sealing is fixedly connected at the bottom interface between the rotation shaft (206) and the device housing (201).

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