A waste liquid recovery mechanism of a drop dyeing HE dyeing machine

Abstract

This utility model discloses a waste liquid recovery mechanism for a HE (Hematoxylin and eosin) dyeing machine, including a recovery mounting frame. The recovery mounting frame is equipped with a recovery horizontal movement module, and the output end of the recovery horizontal movement module is equipped with a recovery lifting module. The output end of the recovery lifting module is equipped with a liquid extraction needle and an air blowing assembly. The liquid extraction needle is externally connected to a negative pressure suction device, and the air blowing assembly is externally connected to an air source. The recovery horizontal movement module and the recovery lifting module can drive the liquid extraction needle to extend into each material trough of the hopper. The liquid extraction needle is used to extract the waste liquid from the material trough, and the air blowing assembly is used to blow air into the material trough. This utility model can automatically and accurately insert the liquid extraction needle into each material trough and position the air blowing assembly above each material trough before performing the liquid extraction and air blowing actions, significantly reducing the intensity of manual operation and human error.

Description

Technical Field

[0001] This utility model relates to the field of HE dyeing machine technology, specifically to a waste liquid recovery mechanism for a drip HE dyeing machine. Background Technology

[0002] Staining is of great significance in the diagnosis of pathological tissue morphology, scientific experimental research, and teaching. Without staining tissue sections, the internal structure of the tissue cannot be seen, and the cell nuclei cannot be identified. Therefore, researchers cannot provide a basis for judgment to determine whether the tissue is abnormal.

[0003] HE staining uses hematoxylin and eosin to stain the nucleus and cytoplasm, respectively, to distinguish the morphology of normal cells. In practical applications, it can identify abnormal pathological changes such as tissue cell necrosis, edema, degeneration, and inflammatory cell infiltration.

[0004] Currently, most tissue section staining processes are still performed manually. The staining process typically requires multiple staining solutions, necessitating manual removal of residual waste liquid from the hopper after each solution is applied, followed by the injection of new solution. This method is inefficient and physically demanding; replacing manual labor with automated equipment is an inevitable trend in the industry's transformation and upgrading. Therefore, there is an urgent need for equipment capable of automatically staining tissue sections, requiring a mechanism to automatically remove waste liquid from the hopper. Utility Model Content

[0005] To address some or all of the problems existing in the prior art, this utility model provides a waste liquid recovery mechanism for a drip-based HE staining machine. The drip-based HE staining machine includes a machine base with a material hopper channel on the machine base for conveying a material hopper containing tissue sections. Multiple material slots for placing tissue sections are evenly distributed on the upper surface of the material hopper. The waste liquid recovery mechanism includes a recovery mounting frame connected to the machine base. The recovery mounting frame is equipped with a recovery horizontal movement module. A recovery lifting module is located at the output end of the recovery horizontal movement module. A liquid extraction needle and an air blowing assembly are located at the output end of the recovery lifting module. The liquid extraction needle is externally connected to a negative pressure suction device, and the air blowing assembly is externally connected to an air source. The recovery horizontal movement module and the recovery lifting module can drive the liquid extraction needle to extend into each material slot of the material hopper. The liquid extraction needle is used to extract the waste liquid from the material slots, and the air blowing assembly is used to blow air into the material slots.

[0006] As a further improvement of this utility model, the recycling lateral movement module includes a recycling lateral movement fixing seat, which is connected to the recycling mounting frame. The recycling lateral movement fixing seat is provided with a lead screw assembly and a recycling lateral movement motor. The output end of the recycling lateral movement motor is connected to the lead screw assembly. A recycling lateral movement slider is slidably provided on the recycling lateral movement fixing seat. The recycling lateral movement slider is connected to the lead screw assembly. The recycling lifting module is connected to the recycling lateral movement slider.

[0007] As a further improvement of this utility model, the recycling lifting module includes a recycling lifting mounting plate, on which a recycling lifting motor and a rotatable recycling lifting driven wheel are provided. A recycling lifting drive wheel is provided on the output end of the recycling lifting motor. A recycling lifting transmission belt is sleeved on the recycling lifting drive wheel and the recycling lifting driven wheel. A recycling lifting slider is provided on the recycling lifting transmission belt. The liquid extraction needle and the air blowing assembly are respectively connected to the recycling lifting slider.

[0008] As a further improvement of this utility model, the recovery lifting slider is provided with a avoidance rotary motor, and the output end of the avoidance rotary motor is provided with a rotary mounting block. The avoidance rotary motor can drive the rotary mounting block to rotate, and the liquid suction needle and the air blowing assembly are respectively connected to the rotary mounting block.

[0009] As a further improvement of this utility model, the recovery lifting slider is provided with a first sensor, and the rotating mounting block is provided with a first sensing lever, which can be connected to the first sensor.

[0010] As a further improvement of this utility model, a second sensor is provided on the recovery lifting mounting plate, and a second sensing lever is provided on the recovery lifting slider, the second sensing lever being able to connect with the second sensor.

[0011] As a further improvement of this utility model, the recycling lifting mounting plate is provided with a recycling lifting guide rail, and the recycling lifting slider is slidably engaged with the recycling lifting guide rail.

[0012] As a further improvement of this utility model, the air blowing component includes an air nozzle, which is connected to the output end of the recovery lifting module. One end of the air nozzle is connected to an external air source, and the other end is provided with a triangular air blowing part. The end face of the air blowing part is provided with multiple air blowing holes.

[0013] As a further improvement of this utility model, there are two liquid-drawing needles, and the two liquid-drawing needles are symmetrically distributed on both sides of the air nozzle, and the distance between the two liquid-drawing needles is less than the length of the material trough.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, through the cooperation of the recovery transverse module and the recovery lifting module, can automatically and accurately insert the liquid extraction needle into each material tank and position the air blowing component above each material tank, and then perform the liquid extraction and air blowing actions, which significantly reduces the intensity of manual operation and human error.

[0015] 2. This utility model uses an air blowing component to blow air into the material tank, forming a directional airflow that drives the residual waste liquid to gather towards the suction needle. This effectively solves the problem of incomplete suction caused by liquid surface tension or liquid adhesion, improves the recovery rate, and avoids cross-contamination. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the silo in an embodiment of this utility model; Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the recycling transverse module in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the recovery lifting module in an embodiment of this utility model; Figure 5 This is a schematic diagram of the recovery lifting module from another perspective in an embodiment of this utility model; Figure 6 This is a schematic diagram of the air nozzle structure in an embodiment of this utility model. Detailed Implementation

[0018] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0019] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment to other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this invention can be combined with other embodiments.

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0021] like Figure 1-6 As shown, a waste liquid recovery mechanism for a drop staining HE staining machine is installed on the machine. The drop staining HE staining machine includes a machine base 100, on which a material hopper channel 200 is provided. The material hopper channel 200 is used to transport a material hopper 300 containing tissue sections. Multiple material trays 400 for placing tissue sections are evenly distributed on the upper surface of the material hopper. During processing, the liquid injection mechanism of the drop staining HE staining machine injects the chemical solution into each material tray 400 of the material hopper to achieve the purpose of staining the tissue sections in the material trays 400. The function of this waste liquid recovery mechanism is to remove the waste liquid after staining in the material trays so that other chemical solutions can be injected into the material trays.

[0022] The waste liquid recycling mechanism includes a recycling mounting frame 1, which is fixedly connected to the machine base 100. The recycling mounting frame 1 is equipped with a recycling transverse moving module 2. The output end of the recycling transverse moving module 2 is equipped with a recycling lifting module 3. The output end of the recycling lifting module 3 is equipped with a liquid suction needle 4 and an air blowing assembly 5. The liquid suction needle 4 is externally connected to a negative pressure suction device, and the air blowing assembly 5 is externally connected to an air source. During processing, the combined action of the recovery transverse module 2 and the recovery lifting module 3 drives the liquid extraction needle 4 to be inserted into each material slot of the hopper on the material box flow channel. The negative pressure generated by the negative pressure suction device connected to the liquid extraction needle 4 draws away the waste liquid in each material slot. At the same time, the combined action of the recovery transverse module 2 and the recovery lifting module 3 drives the air blowing component 5 to move directly above each material slot of the hopper on the material box flow channel. The air blowing component 5 blows air into the material slot, forming a directional airflow, which drives the waste liquid remaining on the side wall of the material slot to gather towards the liquid extraction needle 4. This allows the liquid extraction needle 4 to completely remove the waste liquid from the material slot, effectively solving the problem of incomplete suction caused by liquid surface tension or liquid adhesion.

[0023] like Figure 3As shown, the recycling lateral movement module 2 includes a recycling lateral movement fixed base 21, which is connected to the recycling mounting frame 1. The recycling lateral movement fixed base 21 is equipped with a lead screw assembly (not shown) and a recycling lateral movement motor 22. The output end of the recycling lateral movement motor 22 is connected to the lead screw assembly. A recycling lateral movement slider 23 is slidably mounted on the recycling lateral movement fixed base 21 and is connected to the lead screw assembly. The recycling lifting module 3 is connected to the recycling lateral movement slider 23. During operation, the recycling lateral movement motor 22 drives the lead screw assembly to rotate, thereby causing the recycling lateral movement slider 23 to slide laterally on the recycling lateral movement fixed base 21. The recycling lateral movement slider 23 drives the recycling lifting module 3, the liquid extraction needle 4, and the air blowing assembly 5 to move synchronously, thereby moving the liquid extraction needle 4 and the air blowing assembly 5 to directly above each material trough in the hopper.

[0024] like Figure 4-5 As shown, the recycling lifting module 3 includes a recycling lifting mounting plate 31, which is fixedly connected to the recycling horizontal sliding block 23. A recycling lifting motor 32 and a freely rotatable recycling lifting driven wheel 33 are mounted on the recycling lifting mounting plate 31. A recycling lifting drive wheel 34 is mounted on the output shaft of the recycling lifting motor 32, and a recycling lifting transmission belt 35 is fitted onto the recycling lifting drive wheel 34 and the recycling lifting driven wheel 33. A recycling lifting slider 36 is fixedly mounted on the recycling lifting transmission belt 35; a suction needle 4 and an air blowing assembly 5 are respectively connected to the recycling lifting slider 36. When the recycling horizontal sliding module 2 drives the air blowing assembly 5 and the suction needle 4 to move directly above the material trough, the recycling lifting motor 32 is controlled to operate. The recycling lifting motor 32 drives the recycling lifting slider 36 to move vertically via belt drive, thereby causing the suction needle 4 to insert into the corresponding material trough, facilitating the extraction of waste liquid from the material trough; simultaneously, the air blowing assembly 5 moves above the material trough, facilitating the blowing of air into the material trough.

[0025] To limit and guide the direction of the lifting motion, a retrieval lifting guide rail 37 is fixedly installed on the retrieval lifting mounting plate 31, and the retrieval lifting slider 36 is slidably engaged with the retrieval lifting guide rail 37. When the retrieval lifting motor 32 is working, it can drive the retrieval lifting slider 36 to slide on the retrieval lifting guide rail 37. Through the sliding engagement between the retrieval lifting slider 36 and the retrieval lifting guide rail 37, the lifting direction of the suction needle 4 can be limited and guided to ensure smooth lifting motion.

[0026] To position the descent of the suction needle 4, a second sensor 38 is provided on the recovery lifting mounting plate 31, and a second sensing tab 39 is provided on the recovery lifting slider 36. The second sensing tab 39 can connect with the second sensor 38. Normally, the second sensing tab 39 and the second sensor 38 are in a separate state. When waste liquid needs to be recovered, the recovery lifting motor 32 drives the recovery lifting slider 36 to descend, causing the suction needle 4 and the air blowing assembly 5 to descend synchronously. As the recovery lifting slider 36 descends, the second sensing tab 39 on the recovery lifting slider 36 will connect with the second sensor 38. At this time, the suction needle 4 has just been inserted into the material trough of the hopper, and the air blowing assembly 5 has just moved to the air blowing position above the hopper. The second sensor 38 will send a feedback signal to the controller of the HE dyeing machine, and the controller will immediately control the recovery lifting motor 32 to stop working. The cooperation between the second sensing lever 39 and the second sensor 38 enables the liquid extraction needle 4 to be accurately inserted into the material trough, while simultaneously driving the air blowing assembly 5 to the air blowing position, thereby improving the stability of the processing and the accuracy of the control.

[0027] In actual operation, when the recovery transverse module 2 drives the liquid extraction needle 4 and the air blowing assembly 5 to move along the length of the material box, they may overlap with the liquid injection mechanism or other mechanisms of the HE dyeing machine. Therefore, to avoid motion interference, a avoidance rotary motor 6 is installed on the recovery lifting slider 36. A rotary mounting block 7 is connected to the output end of the avoidance rotary motor 6, and the liquid extraction needle 4 and the air blowing assembly 5 are respectively connected to the rotary mounting block 7. During processing, if the liquid extraction needle 4 and the air blowing assembly 5 overlap with other mechanisms, the rotary mounting block 7 can be rotated in the horizontal plane by the avoidance rotary motor 6; this causes the liquid extraction needle 4 and the air blowing assembly 5 to rotate synchronously, thereby shifting their positions to avoid interference.

[0028] To improve the accuracy of the avoidance mechanism, a first sensor 8 is installed on the recovery lifting slider 36, and a first sensing lever 9 is fixed on the rotating mounting block 7. Normally, the first sensing lever 9 and the first sensor 8 are separate. When avoidance rotation is required, the avoidance rotation motor 6 drives the rotating mounting block 7 to rotate, causing the first sensing lever 9 to move together until it engages with the first sensor 8. The first sensor 8 then sends a feedback signal to stop the avoidance rotation motor 6. At this point, the rotating mounting block 7 also rotates the liquid-drawing needle 4 and the air-blowing assembly 5 to a position offset from other mechanisms of the HE dyeing machine, thus achieving the avoidance function.

[0029] like Figure 6As shown, the air blowing assembly 5 includes an air nozzle 51, which is fixedly mounted on the rotating mounting block 7. One end of the air nozzle 51 is connected to an external air source through a pipeline, and the other end is provided with a triangular air blowing part 52. Multiple air blowing holes 53 are provided on the end face of the air blowing part 52. During operation, the external air source delivers high-pressure gas to the air nozzle 51. The gas flows through the air nozzle 51 into each air blowing hole 53, and then blows into each material tank through each air blowing hole 53, blowing the liquid medicine in the material tank towards the liquid extraction needle 4 so that the liquid extraction needle 4 can extract all the liquid medicine.

[0030] In this embodiment, there are two extraction needles 4, symmetrically distributed on both sides of the air nozzle 51. The distance between the two extraction needles 4 is less than the length of the material trough, allowing both extraction needles 4 to be inserted into the same material trough simultaneously. By placing the two extraction needles 4 on both sides of the air nozzle 51, when the air nozzle 51 blows air into the material trough, the liquid in the trough flows to both sides and onto the corresponding extraction needles 4. Using two extraction needles 4 improves extraction efficiency, thereby increasing processing efficiency.

[0031] Working principle: After the HE staining machine stains the tissue sections in the hopper, the hopper channel 200 transports the hopper to the processing position of the waste liquid recovery mechanism. Then, the recovery traverse motor 22 is activated, driving the recovery traverse slider 23 via a lead screw assembly, aligning the suction needle 4 and air nozzle 51 with the first trough in the hopper. Subsequently, the recovery lifting motor 32 drives the recovery lifting slider 36 to descend via belt drive, lowering the suction needle 4 and air nozzle 51 to a preset position. The negative pressure suction device is activated, suctioning the waste liquid through the suction needle 4; simultaneously, the air source supplies air to the air nozzle 51, and the airflow is blown out from the air blowing hole 53, agitating the waste liquid and causing it to converge towards the suction needle 4, ensuring thorough suction. After suction is complete, the recovery lifting module 3 rises, and the recovery traverse module moves to the next trough position, repeating the above process until all troughs are processed.

[0032] During the process of pumping out waste liquid, if it is necessary to avoid other mechanisms of the HE dyeing machine, the avoidance rotary motor 6 drives the rotary mounting block 7 to rotate, so that the pumping needle 4 and the air nozzle 51 are offset from the material hopper channel 200 above, thus avoiding interference.

[0033] The above-described specific embodiments are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A waste liquid recovery mechanism for a drop staining HE staining machine, the drop staining HE staining machine including a machine base, the machine base being provided with a material hopper channel for conveying a material hopper containing tissue sections, the material hopper having multiple material slots evenly distributed on its upper surface for placing tissue sections, characterized in that: The waste liquid recycling mechanism includes a recycling mounting frame connected to the machine base. The recycling mounting frame is equipped with a recycling horizontal movement module. The output end of the recycling horizontal movement module is equipped with a recycling lifting module. The output end of the recycling lifting module is equipped with a liquid suction needle and an air blowing assembly. The liquid suction needle is externally connected to a negative pressure suction device, and the air blowing assembly is externally connected to an air source. The recycling horizontal movement module and the recycling lifting module can drive the liquid extraction needle to extend into each material trough of the hopper. The liquid extraction needle is used to extract the waste liquid in the material trough, and the air blowing component is used to blow air into the material trough.

2. The waste liquid recovery mechanism of the HE dyeing machine according to claim 1, characterized in that: The recycling lateral movement module includes a recycling lateral movement fixing base, which is connected to a recycling mounting frame. The recycling lateral movement fixing base is provided with a lead screw assembly and a recycling lateral movement motor. The output end of the recycling lateral movement motor is connected to the lead screw assembly. A recycling lateral movement slider is slidably provided on the recycling lateral movement fixing base. The recycling lateral movement slider is connected to the lead screw assembly. The recycling lifting module is connected to the recycling lateral movement slider.

3. The waste liquid recovery mechanism of the HE dyeing machine according to claim 1, characterized in that: The recycling lifting module includes a recycling lifting mounting plate, on which a recycling lifting motor and a rotatable recycling lifting driven wheel are provided. A recycling lifting drive wheel is provided at the output end of the recycling lifting motor. A recycling lifting transmission belt is fitted on the recycling lifting drive wheel and the recycling lifting driven wheel. A recycling lifting slider is provided on the recycling lifting transmission belt. The liquid extraction needle and the air blowing assembly are respectively connected to the recycling lifting slider.

4. The waste liquid recovery mechanism of the HE dyeing machine according to claim 3, characterized in that: The recovery lifting slider is equipped with a avoidance rotary motor, and the output end of the avoidance rotary motor is equipped with a rotary mounting block. The avoidance rotary motor can drive the rotary mounting block to rotate. The liquid suction needle and the air blowing assembly are respectively connected to the rotary mounting block.

5. The waste liquid recovery mechanism of the HE dyeing machine according to claim 4, characterized in that: The recovery lifting slider is equipped with a first sensor, and the rotating mounting block is equipped with a first sensing lever, which can be connected to the first sensor.

6. The waste liquid recovery mechanism of the HE dyeing machine according to claim 3, characterized in that: The recovery lifting mounting plate is equipped with a second sensor, and the recovery lifting slider is equipped with a second sensing lever, which can be connected to the second sensor.

7. The waste liquid recovery mechanism of the HE dyeing machine according to claim 3, characterized in that: The recycling lifting mounting plate is provided with a recycling lifting guide rail, and the recycling lifting slider is slidably engaged with the recycling lifting guide rail.

8. The waste liquid recovery mechanism of the HE dyeing machine according to any one of claims 1-7, characterized in that: The air blowing assembly includes an air nozzle connected to the output end of the recovery lifting module. One end of the air nozzle is connected to an external air source, and the other end is provided with a triangular air blowing section. Multiple air blowing holes are provided on the end face of the air blowing section.

9. The waste liquid recovery mechanism of the HE dyeing machine according to claim 8, characterized in that: There are two liquid extraction needles, and the two liquid extraction needles are symmetrically distributed on both sides of the air nozzle. The distance between the two liquid extraction needles is less than the length of the material trough.

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