Liquid adding system suitable for multiple containers

Abstract

The invention relates to the technical field of tissue stationary liquid adding, and discloses a liquid adding system suitable for multiple containers, the liquid adding system comprises a liquid adding tank, a liquid guide pipe is arranged at the bottom of the liquid adding tank, a plurality of liquid adding cylinders are sequentially installed at the lower end of the liquid guide pipe in series, and piston plates are slidably installed in the liquid adding cylinders in a sealed mode; a liquid outlet pipe is mounted at the bottom of the liquid adding cylinder at the lowermost end; the plurality of piston plates are driven by a rod body to move; according to the liquid adding system suitable for the multiple containers, a multi-cylinder liquid adding cylinder structure comprising the first liquid adding cylinder and the second liquid adding cylinder is designed, a rod body is matched with a piston plate in the liquid adding cylinder, and a liquid inlet channel and a liquid adding channel in the liquid adding cylinder are matched with a liquid guide pipe and a liquid outlet pipe, so that continuous and automatic liquid adding of the containers can be achieved; and the liquid adding amount of the tissue fixing liquid is controlled by controlling the stroke of the rod body, so that the liquid adding efficiency can be improved, and meanwhile, the liquid adding amount can be accurately controlled.

Description

Technical Field

[0001] The invention relates to the technical field of tissue fixative liquid addition, in particular to a liquid addition system suitable for multiple containers. Background Art

[0002] In many fields such as biology, medicine, and education, specimen preparation and preservation play a vital role. Formaldehyde solution (tissue fixative) has long been a commonly used reagent for specimen preservation due to its good bactericidal and antiseptic properties.

[0003] In small laboratories or teaching institutions, staff often use manual liquid addition. They use tools such as measuring cylinders and pipettes to measure a certain amount of liquid from the container storing formaldehyde, and then slowly add it to the specimen storage container. This manual operation is not only inefficient and consumes a lot of manpower and time, but also easily fatigued, especially when a large number of specimens need to be processed, resulting in reduced liquid addition accuracy.

[0004] As the demand for specimen preparation grows, some institutions of a certain size have introduced simple semi-automatic liquid adding equipment. Although these devices partially reduce the intensity of manual labor, such as using a peristaltic pump to extract formaldehyde from a liquid storage barrel and transport it to the liquid adding terminal. However, they lack precise flow control. For some specimen preservation scenarios that have strict requirements on formaldehyde concentration, such as precious biological samples and pathological tissue specimens, inaccurate liquid addition may lead to poor specimen preservation, causing specimen deterioration and damage.

[0005] The current liquid adding systems on the market generally do not take into account the compatibility of specimen containers of different specifications or types. Whether it is a cylindrical specimen cylinder or a bagged specimen bag, the traditional liquid adding method is difficult to flexibly adapt, and often requires manual adjustment of the height and angle of the liquid adding tube, which is cumbersome to operate. Summary of the invention

[0006] In order to solve the problems that the above existing liquid adding devices lack accurate flow control and are not compatible with specimen containers of different specifications or types, the present invention is implemented through the following technical solutions: a liquid adding system suitable for multiple containers, comprising a liquid adding tank, a liquid guide tube is arranged at the bottom of the liquid adding tank, a plurality of liquid adding cylinders are sequentially installed in series at the lower end of the liquid guide tube, a piston plate is sealingly and slidably installed inside the liquid adding cylinder, and a liquid outlet pipe is installed at the bottom of the lowest liquid adding cylinder; The plurality of piston plates are driven to move by the rod body. When the plurality of liquid adding cylinders are in a normal state, when the rod body moves upward or downward, the piston plate will add the tissue fixative in the corresponding liquid adding cylinder into the container through the liquid outlet pipe.

[0007] Furthermore, the liquid adding cylinder has two groups, including a liquid adding cylinder 1 and a liquid adding cylinder 2, and a liquid adding channel 2 is provided at the bottom of the liquid adding cylinder 2, and the liquid adding channel 2 is connected to the liquid outlet pipe; The top of the liquid adding cylinder is provided with a liquid inlet channel 1 connected with the liquid guide tube, and a liquid adding channel 1 is installed between the space above the piston plate 1 inside the liquid adding cylinder and the liquid outlet tube; A second liquid inlet channel is installed between the space below the second piston plate inside the second liquid adding cylinder and the liquid guiding tube; When the rod body moves downward, piston plate 2 pushes the tissue fixative in the second liquid adding cylinder to be added into the container through liquid adding channel 2 and the liquid outlet tube; when the rod body moves upward, piston plate 1 pushes the tissue fixative in the first liquid adding cylinder to be added into the container through liquid adding channel 1 and the liquid outlet tube.

[0008] Furthermore, a liquid guiding component is provided between the liquid inlet channel 1 and the liquid adding channel 1, and between the liquid inlet channel 2 and the liquid adding channel 2. The liquid guiding component is used to allow the tissue fixative to enter the corresponding liquid adding cylinder through the liquid inlet channel 1 or the liquid inlet channel 2, and to allow the tissue fixative in the liquid adding cylinder 1 or the liquid adding cylinder 2 to enter the liquid outlet tube through the corresponding liquid adding channel.

[0009] Furthermore, the liquid guide assembly between the second liquid inlet channel and the second liquid adding channel includes a conical blocking block 1 and a blocking block 2, a matching ring 1 and a matching ring 2; The blocking block 1 and the matching ring 1 are both located inside the liquid adding channel 2, and the blocking block 2 and the matching ring 2 are both located inside the liquid inlet channel 2; When the piston plate 2 moves downward, under the pressure of the tissue fixative, the blocking block 1 is separated from the matching ring 1, the liquid outlet pipe is connected with the interior of the liquid adding cylinder 2, and at the same time, the blocking block 2 is matched with the matching ring 2, and the liquid inlet channel 2 is closed; When the piston plate 2 moves upward, the blocking block 1 cooperates with the matching ring 1, and the liquid adding channel 2 is closed. At the same time, the blocking block 2 is separated from the matching ring 2, and the tissue fixative in the liquid guide tube enters the interior of the liquid adding cylinder 2 through the liquid inlet channel 2.

[0010] Furthermore, the liquid guide assembly between the second liquid inlet channel and the second liquid adding channel comprises a steel wire, a sleeve rod is fixedly installed on the bottom surface of the second liquid adding cylinder, the steel wire is slidably installed inside the sleeve rod, one end of the steel wire extends into the second liquid inlet channel, and the other end extends into the second liquid adding channel; The blocking block 1 and the blocking block 2 are both slidably arranged on the surface of the steel wire, the free end of the steel wire located inside the second liquid adding channel is fixedly installed with a limit plate, the matching ring 1 is fixedly arranged inside the second liquid adding channel, the matching ring 2 is fixedly arranged on the surface of the steel wire and is slidably sealed and connected with the second liquid inlet channel, the inner wall of the second liquid inlet channel is fixedly arranged with a block, and the block is located between the blocking block 2 and the matching ring 2; The surface of the second liquid inlet channel is provided with an adjusting handle 2, and the steel wire is moved by rotating the adjusting handle 2, so that the first block and the first matching ring are in a matching state, and the second block and the second matching ring are in a separated state.

[0011] Furthermore, an adjusting handle 1 is provided on the surface of the liquid adding channel 1, and the adjusting handle 1 is rotated to drive the steel wire in the liquid guiding component inside the liquid adding cylinder 1 to move, so that the liquid inlet channel 1 is in an open state and the liquid adding channel 1 is in a closed state.

[0012] Furthermore, an intermediate tube is installed in the liquid guiding tube, a bidirectional motor with a settable rotation angle is installed on the side of the intermediate tube, and a crankshaft is provided at the output end of the bidirectional motor located inside the intermediate tube, and the crankshaft is used to drive the rod body to move upward or downward.

[0013] Furthermore, it also includes a fixed cylinder, the inner wall of which is fixedly mounted with an annular bottom plate and an upper cover, an adjusting gear ring is arranged between the bottom plate and the upper cover, and the adjusting gear ring is rotatably mounted inside the fixed cylinder; The adjusting gear ring is composed of two sector-shaped inner gear rings and two sector-shaped outer gear rings, the inner gear rings and the outer gear rings are alternately distributed, two large gears and two small gears are rotatably installed between the bottom plate and the upper cover, the two large gears are respectively meshed with the two inner gear rings, and the two small gears are respectively meshed with the two outer gear rings; The bottom surface of the bottom plate and the upper surface of the upper cover are both provided with four sets of supports, the supports are fixedly connected to the corresponding large gears or small gears, a cylinder is fixedly installed on the surface of the supports, and a suction cup is installed at the free end of the gas rod of the cylinder; The gas rods of the four groups of gas cylinders in the bottom plate or the upper cover are distributed along the radius direction of the fixed cylinder or are distributed in pairs in a collinear manner.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The liquid adding system suitable for multiple containers can realize continuous automatic liquid adding to the container by designing a multi-cylinder liquid adding cylinder structure including a liquid adding cylinder 1 and a liquid adding cylinder 2, and utilizing the cooperation between the rod body and the piston plate inside the liquid adding cylinder, as well as the cooperation between the liquid inlet channel, the liquid adding channel, the liquid guide tube and the liquid outlet tube in the liquid adding cylinder, and can control the liquid adding amount of the tissue fixative by controlling the stroke of the rod body, thereby improving the liquid adding efficiency and accurately controlling the liquid adding amount; in addition, by designing a liquid guide assembly and an adjusting handle between the liquid inlet channel and the liquid adding channel, not only can the flow direction of the tissue fixative be controlled according to the moving direction of the piston plate, but also when one of the liquid adding cylinders has a problem, the adjusting handle can be turned to stop the liquid adding action of the problematic liquid adding cylinder, and the liquid adding of other liquid adding cylinders will not be affected.

[0015] 2. The liquid adding system suitable for multiple containers is designed with an adjustable gear ring composed of an outer gear ring and an inner gear ring alternately distributed in the fixed cylinder, and cooperates with a large gear and a small gear respectively. The position distribution of the four groups of cylinders can be adjusted according to the type of container, so as to fix the cylindrical container and open and fix the bagged container, thereby being suitable for adding liquid and fixing containers of various types and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereoscopic diagram of the overall structure of the liquid adding system of the present invention; Figure 2 This is a schematic diagram of the overall structure of the liquid adding tank of the present invention; Figure 3 This is a schematic diagram of the internal structure of the bottom portion of the liquid adding tank of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 This is a three-dimensional diagram of the structure of the liquid guide assembly in the second liquid adding cylinder of the present invention; Figure 6 The internal structure of the fixed cylinder of the present invention is three-dimensional Figure 1 ; Figure 7 The internal structure of the fixed cylinder of the present invention is three-dimensional Figure 2 ; Figure 8 It is a schematic diagram of the distribution structure of the adjusting gear ring, adjusting gear 1 and adjusting gear 2 inside the fixed cylinder of the present invention; Fig. 9 This is a three-dimensional diagram of the distribution structure of the adjusting gear ring, adjusting gear 1 and adjusting gear 2 of the present invention.

[0017] In the figure: 1, liquid adding tank; 101, liquid inlet; 2, liquid guide tube; 3, liquid adding cylinder 1; 31, liquid inlet channel 1; 32, liquid adding channel 1; 33, adjustment handle 1; 4, liquid adding cylinder 2; 41, liquid inlet channel 2; 42, liquid adding channel 2; 43, adjustment handle 2; 5, rod body; 51, piston plate 1; 52, piston plate 2; 6, intermediate tube; 7, bidirectional motor; 8, steel wire; 81, block 1; 82, block 2 ;83. Matching ring one;84. Matching ring two;85. Block;86. Limiting plate;9. Sleeve rod;10. Liquid outlet pipe;11. Liquid level sensor;12. Drain pipe;121. Backwash pipe;13. Fixed cylinder;131. Bottom plate;132. Upper cover;14. Adjusting gear ring;141. Inner gear ring;142. Outer gear ring;15. Large gear;16. Small gear;17. Support;18. Cylinder;19. Suction cup. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The embodiment of the liquid filling system applicable to multiple containers is as follows: See also Figure 1-Figure 9 A liquid adding system suitable for multiple containers includes a liquid adding tank 1, a liquid inlet 101 is arranged on the top of the liquid adding tank 1, which is used to add tissue fixative into the liquid adding tank 1, a sewage pipe 12 and a backwash pipe 121 are arranged at the bottom of the liquid adding tank 1, which are used to flush the inside of the liquid adding tank 1, a liquid guide tube 2 is arranged at the bottom of the liquid adding tank 1, and a plurality of liquid adding cylinders are sequentially installed in series at the lower end of the liquid guide tube 2, a piston plate is installed in a sealing sliding manner inside the liquid adding cylinder, and a liquid outlet pipe 10 is installed at the bottom of the lowest liquid adding cylinder.

[0020] The plurality of piston plates are driven to move by the rod body 5. When the plurality of liquid adding cylinders are in a normal state, when the rod body 5 moves upward or downward, the piston plates will add the tissue fixative in the corresponding liquid adding cylinders into the container through the liquid outlet pipe 10.

[0021] Among them, an intermediate tube 6 is installed in the liquid guide tube 2, and a bidirectional motor 7 with a settable rotation angle is installed on the side of the intermediate tube 6. A crankshaft is provided at the output end of the bidirectional motor 7 located inside the intermediate tube 6, and a connecting rod rotatably connected is provided between the crankshaft and the upper end of the rod body 5. The crankshaft is used to drive the rod body 5 to move upward or downward. A liquid level sensor 11 is provided on the side surface of the liquid adding tank 1, and the liquid level sensor 11 and the bidirectional motor 7 are connected by electrical signals. When the tissue fixative in the liquid adding tank 1 is lower than the set threshold, the liquid level sensor 11 sends a signal to the bidirectional motor 7, and the bidirectional motor 7 stops running to avoid liquid-free movement of the piston plate inside the liquid adding cylinder.

[0022] Specifically, by setting the angles of forward rotation and reverse rotation of the bidirectional motor 7 (wherein the angles of forward rotation and reverse rotation are the same), the movement stroke of the rod body 5 can be controlled, thereby controlling the movement stroke of the piston plate in the liquid adding cylinder, and then controlling the volume of liquid added in each liquid adding cylinder. According to the amount of liquid added to the container, the forward and reverse rotation angles of the bidirectional motor 7 and the number of forward and reverse cycle rotations can be set in advance.

[0023] It should be noted that there are two groups of liquid adding cylinders, including liquid adding cylinder 1 3 and liquid adding cylinder 2 4. The space on the side of the piston plate without organized fixed liquid in liquid adding cylinder 1 3 and liquid adding cylinder 2 4 is communicated with the outside world. A liquid adding channel 2 42 is provided at the bottom of liquid adding cylinder 2 4. A liquid outlet pipe 10 is installed at the bottom of liquid adding cylinder 2 4, and liquid adding channel 2 42 is communicated with the liquid outlet pipe 10.

[0024] A liquid inlet channel 31 connected to the liquid guide tube 2 is provided at the top of the liquid adding cylinder 3, and a liquid adding channel 32 is installed between the space above the piston plate 51 inside the liquid adding cylinder 3 and the liquid outlet tube 10; a liquid inlet channel 41 is installed between the space below the piston plate 52 inside the liquid adding cylinder 4 and the liquid guide tube 2.

[0025] Specifically, when the rod body 5 moves downward, the piston plate 2 52 pushes the tissue fixative in the liquid adding cylinder 2 4 to be added into the container through the liquid adding channel 2 42 and the liquid outlet pipe 10; when the rod body 5 moves upward, the piston plate 1 51 pushes the tissue fixative in the liquid adding cylinder 1 3 to be added into the container through the liquid adding channel 1 32 and the liquid outlet pipe 10. When the rod body 5 moves, tissue fixative is continuously added into the container, so that the amount of tissue fixative added can be set and controlled, and liquid can be added continuously, which is beneficial to improving the efficiency of adding tissue fixative.

[0026] On this basis, a liquid guiding component is provided between the liquid inlet channel 1 31 and the liquid adding channel 1 32, and between the liquid inlet channel 2 41 and the liquid adding channel 2 42. The liquid guiding component is used to allow the tissue fixative to enter the corresponding liquid adding cylinder through the liquid inlet channel 1 31 or the liquid inlet channel 2 41, and the tissue fixative in the liquid adding cylinder 1 3 or the liquid adding cylinder 2 4 enters the liquid outlet tube 10 through the corresponding liquid adding channel.

[0027] It should be noted that the liquid guiding component between the liquid inlet channel 41 and the liquid adding channel 42 includes conical block 1 81 and block 2 82, matching ring 1 83 and matching ring 2 84; block 1 81 and matching ring 1 83 are both located inside the liquid adding channel 42, a return spring is provided between the block 1 81 and the matching ring 1 83, and block 2 82 and matching ring 2 84 are both located inside the liquid inlet channel 41.

[0028] When the piston plate 52 moves downward, under the action of the pressure of the tissue fixative, the block 1 81 is separated from the matching ring 1 83, the liquid outlet pipe 10 is connected to the interior of the liquid adding cylinder 2 4, and at the same time, the block 2 82 is matched with the matching ring 2 84, and the liquid inlet channel 2 41 is closed; when the piston plate 52 moves upward, under the action of the pressure of the tissue fixative inside the liquid outlet pipe 10, or under the action of the reset spring, the block 1 81 is matched with the matching ring 1 83, the liquid adding channel 2 42 is closed, and at the same time, the block 2 82 is separated from the matching ring 2 84, and the tissue fixative in the liquid guide tube 2 enters the interior of the liquid adding cylinder 2 4 through the liquid inlet channel 2 41.

[0029] It should also be noted that the block 1 81 and the matching ring 1 83 in the liquid guide assembly between the liquid inlet channel 1 31 and the liquid adding channel 1 32 are located inside the liquid adding channel 1 32, and a return spring is provided between the block 1 81 and the matching ring 1 83. The block 2 82 and the matching ring 2 84 are located inside the liquid inlet channel 1 31. The matching mode between the conical block 1 81 and the block 2 82, the matching ring 1 83, and the matching ring 2 84 is as follows: When the piston plate 51 moves upward, under the action of the pressure of the tissue fixative, the block 1 81 is separated from the matching ring 1 83, the liquid outlet pipe 10 is connected with the interior of the liquid adding cylinder 3, and at the same time, the block 2 82 is matched with the matching ring 2 84, and the liquid inlet channel 1 31 is closed; when the piston plate 51 moves downward, under the action of the return spring, the block 1 81 is matched with the matching ring 1 83, the liquid adding channel 1 32 is closed, and at the same time, the block 2 82 is separated from the matching ring 2 84, and the tissue fixative in the liquid guide tube 2 enters the interior of the liquid adding cylinder 3 through the liquid inlet channel 1 31.

[0030] When both the liquid adding cylinder 1 3 and the liquid adding cylinder 2 4 are in normal state, the tissue fixative can be continuously added to the container through the above process. If one of the liquid adding cylinder 1 3 or the liquid adding cylinder 2 4 is abnormal, in order to continue to complete the liquid adding action of the container, the following design needs to be further made: The liquid guiding component between the second liquid inlet channel 41 and the second liquid adding channel 42 includes a steel wire 8. A sleeve rod 9 is fixedly installed on the bottom surface of the second liquid adding cylinder 4. The steel wire 8 is slidably installed inside the sleeve rod 9. One end of the steel wire 8 extends into the second liquid inlet channel 41, and the other end extends into the second liquid adding channel 42.

[0031] Block 1 81 and block 2 82 are both slidably set on the surface of the steel wire 8, and a limit plate 86 is fixedly installed on the free end of the steel wire 8 located inside the liquid adding channel 2 42. The matching ring 1 83 is fixedly set inside the liquid adding channel 2 42, and the matching ring 2 84 is fixedly set on the surface of the steel wire 8 and is slidably and sealingly connected with the liquid inlet channel 2 41. A block 85 is fixedly set on the inner wall of the liquid inlet channel 2 41, and the block 85 is located between the block 2 82 and the matching ring 2 84.

[0032] The surface of the second liquid inlet channel 41 is provided with an adjusting handle 43. By rotating the adjusting handle 43, the steel wire 8 is driven to move, so that the blocking block 81 and the matching ring 83 are in a matching state, and the blocking block 82 and the matching ring 84 are in a separated state.

[0033] Specifically, when an abnormality occurs in the liquid adding cylinder 2 4, the liquid adding action of the liquid adding cylinder 2 4 is stopped. The specific operation is to rotate the adjusting handle 2 43, and the adjusting handle 2 43 pulls the steel wire 8 to move. The steel wire 8 drives the blocking block 1 81 to move through the limit plate 86, and drives the matching ring 2 84 to move at the same time. The blocking block 1 81 will cooperate with the matching ring 1 83, and the liquid adding channel 2 42 is in a closed state. At the same time, under the action of the block 85, the blocking block 2 82 and the matching ring 2 84 are always in a separated state, so the liquid inlet channel 2 41 is always in an open state. Therefore, when the piston plate 2 52 in the liquid adding cylinder 2 4 reciprocates, the liquid adding cylinder 2 4 has no liquid adding action, and will not interfere with the liquid adding process of the liquid adding cylinder 1 3.

[0034] It should be noted that an adjustment handle 33 is provided on the surface of the liquid adding channel 32. By rotating the adjustment handle 33, the steel wire 8 in the liquid guiding component inside the liquid adding cylinder 3 is moved, so that the liquid inlet channel 31 is in an open state and the liquid adding channel 32 is in a closed state.

[0035] Specifically, when an abnormality occurs in the liquid adding cylinder 3, the liquid adding action of the liquid adding cylinder 3 is stopped. The specific operation is to rotate the adjusting handle 33, and the adjusting handle 33 makes the steel wire 8 move in the direction of the liquid inlet channel 31. The steel wire 8 drives the blocking block 81 to move through the limit plate 86, and drives the matching ring 84 to move at the same time. The blocking block 81 will cooperate with the matching ring 83, and the liquid adding channel 32 is in a closed state. At the same time, under the action of the stop block 85, the blocking block 82 and the matching ring 84 are always in a separated state, so the liquid inlet channel 31 is always in an open state. Therefore, when the piston plate 51 in the liquid adding cylinder 3 reciprocates, the liquid adding cylinder 3 has no liquid adding action, and will not interfere with the liquid adding process of the liquid adding cylinder 4.

[0036] On this basis, the liquid adding system also includes a fixed cylinder 13 , the inner wall of which is fixedly mounted with an annular bottom plate 131 and an upper cover 132 , an adjusting gear ring 14 is arranged between the bottom plate 131 and the upper cover 132 , and the adjusting gear ring 14 is rotatably mounted inside the fixed cylinder 13 .

[0037] The adjusting gear ring 14 is composed of two sector-shaped inner gear rings 141 and two sector-shaped outer gear rings 142, and the inner gear rings 141 and the outer gear rings 142 are alternately distributed. Two large gears 15 and two small gears 16 are rotatably installed between the bottom plate 131 and the upper cover 132. The large gear 15 is located on the inner side of the inner gear ring 141, and the small gear 16 is located on the outer side of the outer gear ring 142. The two large gears 15 are respectively meshed with the two inner gear rings 141, and the two small gears 16 are respectively meshed with the two outer gear rings 142. The tooth diameter of the large gear 15 is greater than the tooth diameter of the small gear 16. When the adjusting gear ring 14 rotates, the rotation directions of the two adjacent gears are opposite, and at the same time, the rotation angular velocities of all gears are the same.

[0038] Four groups of supports 17 are provided on the bottom surface of the bottom plate 131 and the upper surface of the upper cover 132. The supports 17 are fixedly connected to the corresponding large gears 15 or small gears 16. A cylinder 18 is fixedly installed on the surface of the support 17. A suction cup 19 is installed at the free end of the gas rod of the cylinder 18. The cylinder 18 and the suction cup 19 are combined to fix the cylindrical container or to open the bagged container.

[0039] The gas rods of the four groups of cylinders 18 in the bottom plate 131 or the upper cover 132 are distributed along the radius direction of the fixed cylinder 13 or are distributed in pairs in a collinear manner. Specifically, Figure 6 As shown, when it is necessary to add tissue fixative to the cylindrical container, the gas rods of the four groups of cylinders 18 are distributed along the radial direction of the fixing cylinder 13, and the four groups of cylinders 18 cooperate to fix the cylindrical container, making it convenient to use the liquid adding tank 1 to add tissue fixative to the cylindrical container; Figure 7 As shown, when the container is a bagged container, the air rods of the four groups of air cylinders 18 are adjusted to a state of being distributed in pairs in a collinear manner by adjusting the rotation of the gear ring 14. At this time, the four groups of air cylinders 18 are used in conjunction with the suction cup 19 to pull and open the opening of the bagged container and fix the bagged container, thereby facilitating the use of the liquid adding tank 1 to add tissue fixative into the bagged container.

[0040] The working principle of this liquid filling system for multiple containers: First, the distribution state of the four groups of cylinders 18 is adjusted according to the type of container to be filled with liquid, and the container is fixed in the fixing tube 13 by using the four groups of cylinders 18 and the suction cup 19 to cooperate.

[0041] Then, according to the liquid filling volume of the container, the forward and reverse rotation angles of the bidirectional motor 7 and the number of reverse and cyclic rotations are set, and the bidirectional motor 7 is started. The bidirectional motor 7 drives the rod body 5 to move up and down, and the rod body 5 drives the piston plate to move. The downward or upward movement of the piston plate is used to add the tissue fixative in the corresponding liquid adding cylinder to the container until the tissue fixative in the container reaches the set amount. The bidirectional motor 7 stops running, thereby completing the filling of the tissue fixative in the container.

[0042] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A liquid filling system suitable for multiple containers, comprising a filling tank (1), characterized in that: The bottom of the liquid adding tank (1) is provided with a liquid guiding tube (2), the lower end of which is sequentially and serially mounted with a plurality of liquid adding cylinders, the inner part of which is sealingly and slidably mounted with a piston plate, and the bottom of the lowest liquid adding cylinder is mounted with a liquid outlet tube (10); The plurality of piston plates are driven to move by the rod body (5); when the plurality of liquid adding cylinders are in a normal state, when the rod body (5) moves upward or downward, the piston plates will add the tissue fixative in the corresponding liquid adding cylinder into the container through the liquid outlet pipe (10).

2. The liquid filling system suitable for multiple containers according to claim 1, characterized in that: The liquid adding cylinders have two groups, including a liquid adding cylinder 1 (3) and a liquid adding cylinder 2 (4). The bottom of the liquid adding cylinder 2 (4) is provided with a liquid adding channel 2 (42), and the liquid adding channel 2 (42) is connected to the liquid outlet pipe (10); The top of the liquid adding cylinder (3) is provided with a liquid inlet channel (31) connected to the liquid guide tube (2), and a liquid adding channel (32) is installed between the space above the piston plate (51) inside the liquid adding cylinder (3) and the liquid outlet tube (10); A second liquid inlet channel (41) is installed between the space below the second piston plate (52) inside the second liquid adding cylinder (4) and the liquid guiding tube (2); When the rod body (5) moves downward, the second piston plate (52) pushes the tissue fixative in the second liquid adding cylinder (4) to be added into the container through the second liquid adding channel (42) and the liquid outlet pipe (10); when the rod body (5) moves upward, the first piston plate (51) pushes the tissue fixative in the first liquid adding cylinder (3) to be added into the container through the first liquid adding channel (32) and the liquid outlet pipe (10).

3. The liquid filling system applicable to multiple containers according to claim 2, characterized in that: A liquid guide assembly is provided between the liquid inlet channel 1 (31) and the liquid adding channel 1 (32), and between the liquid inlet channel 2 (41) and the liquid adding channel 2 (42). The liquid guide assembly is used to allow the tissue fixative to enter the corresponding liquid adding cylinder through the liquid inlet channel 1 (31) or the liquid inlet channel 2 (41), and to allow the tissue fixative in the liquid adding cylinder 1 (3) or the liquid adding cylinder 2 (4) to enter the liquid outlet pipe (10) through the corresponding liquid adding channel.

4. The liquid filling system applicable to multiple containers according to claim 3, characterized in that: The liquid guide assembly between the second liquid inlet channel (41) and the second liquid adding channel (42) comprises a conical blocking block 1 (81) and a second blocking block (82), a matching ring 1 (83) and a matching ring 2 (84); The blocking block 1 (81) and the matching ring 1 (83) are both located inside the liquid adding channel 2 (42), and the blocking block 2 (82) and the matching ring 2 (84) are both located inside the liquid inlet channel 2 (41); When the second piston plate (52) moves downward, under the pressure of the tissue fixative, the first blocking block (81) and the first matching ring (83) are separated, the liquid outlet pipe (10) is connected to the interior of the second liquid adding cylinder (4), and at the same time, the second blocking block (82) and the second matching ring (84) are matched, and the second liquid inlet channel (41) is closed; When the piston plate 2 (52) moves upward, the blocking block 1 (81) cooperates with the matching ring 1 (83), the liquid adding channel 2 (42) is closed, and at the same time, the blocking block 2 (82) and the matching ring 2 (84) are separated, and the tissue fixative in the liquid guiding tube (2) enters the interior of the liquid adding cylinder 2 (4) through the liquid inlet channel 2 (41).

5. The liquid filling system applicable to multiple containers according to claim 4, characterized in that: The liquid guide assembly between the second liquid inlet channel (41) and the second liquid adding channel (42) comprises a steel wire (8), a sleeve rod (9) is fixedly mounted on the bottom surface of the second liquid adding cylinder (4), the steel wire (8) is slidably mounted inside the sleeve rod (9), one end of the steel wire (8) extends into the second liquid inlet channel (41), and the other end extends into the second liquid adding channel (42); The blocking block 1 (81) and the blocking block 2 (82) are both slidably arranged on the surface of the steel wire (8); a limit plate (86) is fixedly installed on the free end of the steel wire (8) located inside the second liquid adding channel (42); the matching ring 1 (83) is fixedly arranged inside the second liquid adding channel (42); the matching ring 2 (84) is fixedly arranged on the surface of the steel wire (8) and is slidably sealed with the second liquid inlet channel (41); a blocking block (85) is fixedly arranged on the inner wall of the second liquid inlet channel (41); the blocking block (85) is located between the blocking block 2 (82) and the matching ring 2 (84); The surface of the second liquid inlet channel (41) is provided with an adjusting handle (43). By rotating the adjusting handle (43), the steel wire (8) is driven to move, so that the first blocking block (81) and the first matching ring (83) are in a matching state, and the second blocking block (82) and the second matching ring (84) are in a separated state.

6. The liquid filling system applicable to multiple containers according to claim 5, characterized in that: The surface of the liquid adding channel 1 (32) is provided with an adjusting handle 1 (33), and by rotating the adjusting handle 1 (33), a steel wire (8) in a liquid guide assembly inside the liquid adding cylinder 1 (3) is driven to move, so that the liquid inlet channel 1 (31) is in an open state, and the liquid adding channel 1 (32) is in a closed state.

7. The liquid filling system applicable to multiple containers according to claim 6, characterized in that: An intermediate tube (6) is installed in the liquid guiding tube (2), a bidirectional motor (7) whose rotation angle can be set is installed on the side of the intermediate tube (6), and a crankshaft is provided at the output end of the bidirectional motor (7) located inside the intermediate tube (6), and the crankshaft is used to drive the rod body (5) to move upward or downward.

8. The liquid adding system applicable to multiple containers according to any one of claims 1 to 7, characterized in that: It also comprises a fixed cylinder (13), the inner wall of which is fixedly mounted an annular bottom plate (131) and an upper cover (132), an adjusting gear ring (14) is arranged between the bottom plate (131) and the upper cover (132), and the adjusting gear ring (14) is rotatably mounted inside the fixed cylinder (13); The adjusting gear ring (14) is composed of two sector-shaped inner gear rings (141) and two sector-shaped outer gear rings (142), the inner gear rings (141) and the outer gear rings (142) being alternately arranged, two large gears (15) and two small gears (16) being rotatably mounted between the bottom plate (131) and the upper cover (132), the two large gears (15) respectively meshing with the two inner gear rings (141), and the two small gears (16) respectively meshing with the two outer gear rings (142); The bottom surface of the bottom plate (131) and the upper surface of the upper cover (132) are both provided with four groups of supports (17), the supports (17) being fixedly connected to the corresponding large gear (15) or small gear (16), a cylinder (18) being fixedly mounted on the surface of the support (17), and a suction cup (19) being mounted on the free end of the gas rod of the cylinder (18); The gas rods of the four groups of gas cylinders (18) in the bottom plate (131) or the upper cover (132) are distributed along the radial direction of the fixed cylinder (13) or are distributed in pairs in a collinear manner.

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