Serum detection waste liquid suction and pipeline anti-blocking flushing device

Abstract

The present application relates to the field of serum detection, and particularly relates to a waste liquid pumping and pipeline anti-blocking flushing device for serum detection. The waste liquid pumping and pipeline anti-blocking flushing device for serum detection comprises a mobile frame, etc.; a negative pressure pump and a liquid heating tank are installed on the mobile frame; a liquid storage tank and a filter frame are arranged on the side wall of the mobile frame; and an air pipe is connected between the negative pressure pump and the liquid storage tank. The present application is characterized in that a sleeve is sleeved outside the liquid pumping pipe, hot water in the liquid heating tank is made to flow in the annular circulation path, the waste liquid in the liquid pumping pipe is continuously heated and kept warm, the lipids and other impurities in the serum waste liquid are effectively prevented from being frozen and adhered to the pipe wall in a low-temperature environment, the risk of pipeline blockage is significantly reduced, and the waste liquid pumping is ensured to be smooth; the coarse filter screen and the fine filter screen are concentrically rotated to perform graded filtration on the waste liquid, the burden of single-layer filtration is reduced, the filtration efficiency is improved, and the coarse and fine filter screens are sprayed and back-flushed by the hot water through the flushing pipe.

Description

Technical Field

[0001] This invention relates to the field of serum testing, and more particularly to a waste liquid aspiration and pipeline anti-clogging flushing device for serum testing. Background Technology

[0002] Serum testing is a routine procedure in clinical medical laboratory testing, generating a large amount of waste liquid containing serum samples, reagent residues, and reaction byproducts. Currently, most serum analyzers use built-in or external waste liquid tubing to draw the waste liquid into a centralized waste liquid receiving tank for treatment. However, the following problems exist in actual use: First, serum waste contains solid or semi-solid impurities such as fibrin clots, lipids, reagent crystals, and cell debris. These impurities tend to gradually deposit on the inner walls of pipelines at room temperature. Especially when the ambient temperature is low, lipid components will solidify and increase viscosity, further accelerating pipeline blockage. Existing waste fluid suction devices typically do not take any insulation measures for the pipelines, causing lipid impurities on the inner walls of the pipelines to solidify and harden in winter or low-temperature environments. This not only increases the risk of blockage but also makes subsequent flushing and unblocking difficult.

[0003] Secondly, even if some devices are equipped with filtration structures to intercept large particulate impurities in the waste liquid, these structures themselves can gradually become clogged during use, requiring regular manual disassembly, cleaning, or replacement of the filter screen. Since serum waste liquid is biohazardous, manual disassembly is not only tedious and time-consuming but also increases the risk of exposure and cross-contamination for operators. Furthermore, existing filtration structures lack effective online self-cleaning capabilities, making it impossible to simultaneously flush and maintain the filter elements and pipelines while pumping out waste liquid. Often, the system is only shut down after clogging occurs, impacting the continuous operating efficiency of the testing equipment.

[0004] To address the aforementioned shortcomings, there is an urgent need for a waste liquid suction and pipeline anti-clogging flushing device for serum testing that can both insulate the waste liquid suction pipeline to prevent impurities from solidifying and clogging, and also has a self-cleaning function for the filter structure to ensure long-term stable operation of the equipment. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a waste liquid suction and pipeline anti-clogging flushing device for serum testing that can both insulate the waste liquid suction pipeline to prevent impurities from solidifying and clogging, and has a self-cleaning function for the filter structure to ensure long-term stable operation of the equipment.

[0006] Technical Solution: A waste liquid aspiration and pipeline anti-clogging flushing device for serum testing, comprising a mobile frame, a negative pressure pump, a storage tank, an air pipe, a filter frame, and a suction pipe. The mobile frame is equipped with a negative pressure pump and a liquid heating tank. The storage tank and filter frame are located on the side wall of the mobile frame. An air pipe connects the negative pressure pump and the storage tank. The inlet end of the filter frame is connected to the suction pipe, and the other end of the suction pipe is connected to the waste liquid discharge port of the analyzer. The filter frame contains a filtration structure for staged filtration of the waste liquid, and an anti-clogging flushing structure is provided between the suction pipe and the filter frame. The filtration structure includes a coarse filter screen and a fine filter screen that are concentrically rotated within the filter frame. The fine filter screen is located outside the coarse filter screen, and the coarse filter screen is connected to the liquid extraction tube. The anti-clogging flushing structure includes a sleeve fitted on the outer surface of the liquid extraction tube. A V-shaped receiving plate is provided below both the coarse and fine filter screens. A flushing pipe is provided above both the coarse and fine filter screens. The flushing pipes and the sleeve are connected and communicated through pipelines.

[0007] As an improvement to the above solution, the upper side wall of the liquid storage tank is provided with a liquid inlet connector, the bottom of the liquid storage tank is provided with a liquid drain pipe, the top of the liquid storage tank is rotatably installed with a top cover plate, and a negative pressure pipe is provided through the top cover plate, which is connected to the upper end of the gas pipe.

[0008] As an improvement to the above solution, a filter bucket is placed in the upper part of the liquid storage tank. The filter bucket is below the liquid inlet connector, and a spring is installed above the filter bucket. The top of the spring contacts the bottom of the top cover plate. When the top cover plate is closed, the spring is in a compressed state.

[0009] As an improvement to the above solution, a sliding sleeve is vertically arranged at the center of the filter bucket, and a blocking rod is slidably connected inside the sliding sleeve. A float plate is connected to the bottom end of the blocking rod, and the blocking rod is below the negative pressure pipe.

[0010] As an improvement to the above solution, a connecting pipe is provided between the liquid outlet end and the liquid inlet connector of the filter frame. A valve I is provided on the connecting pipe. An internal gear ring is concentrically arranged on the inner end face of the fine filter screen, and an external gear ring is concentrically arranged on the inner end face of the coarse filter screen. A motor is fixedly connected to the outer end face of the filter frame. The output shaft of the motor passes through the filter frame and is connected to a gear. The gear meshes with both the external and internal gear rings simultaneously.

[0011] As an improvement to the above scheme, the liquid inlet end of the liquid extraction pipe is equipped with valve II, the liquid outlet end of the V-shaped receiving plate is connected to a slag discharge pipe, and a discharge pipe is connected and connected to the connecting pipe. The liquid first passes through the discharge pipe and then through valve I. There is valve III on the discharge pipe, and the bottom end of the slag discharge pipe is connected and connected to the discharge pipe.

[0012] As an improvement to the above solution, a heater is provided inside the liquid heating tank.

[0013] As an improvement to the above solution, a pump body is provided at the top of the liquid heating tank. The pump body's liquid drawing end is connected to a water drawing pipe that extends into the liquid heating tank. The pump body's liquid outlet end is connected to a drain pipe. The upper end of the drain pipe is connected to and communicates with a sleeve. A valve IV is provided on the drain pipe. A water distribution pipe is provided between the drain pipe and the liquid drawing pipe. A valve V is provided on the water distribution pipe.

[0014] This invention uses a sleeve on the outside of the extraction tube and hot water in the liquid heating tank to flow in a circular flow path to continuously heat and keep the waste liquid in the extraction tube warm. This effectively prevents impurities such as lipids in the serum waste liquid from solidifying and adhering to the tube wall under low temperature conditions, significantly reduces the risk of pipeline blockage, and ensures smooth waste liquid extraction. The waste liquid is filtered in stages by using coarse and fine filters that rotate concentrically. This reduces the burden on single-layer filters and improves filtration efficiency. At the same time, hot water is used to spray backwash the coarse and fine filters through the flushing pipe. The motor drives the gears to drive the inner and outer gear rings to make the two layers of filters rotate synchronously, ensuring that all parts of the filter are evenly flushed. The attached impurities are flushed into the V-shaped receiving plate, realizing online self-cleaning of the filter structure. It can work stably for a long time without manual disassembly. By controlling the on / off state of valves IV, V, I, and III, the system can freely switch between heat preservation mode and liquid extraction tube flushing mode. When flushing the inside of the liquid extraction tube, hot water directly enters the liquid extraction tube and is discharged through the discharge pipe, without contaminating the storage tank. After flushing, the system can quickly return to heat preservation mode. The operation is simple and does not affect the normal testing process. A filter bucket is installed inside the storage tank for secondary filtration, improving the cleanliness of the waste liquid. The spring above the filter bucket is compressed when the cover is closed, which not only stabilizes the filter bucket installation but also helps to lift the top cover when the fasteners are loosened, making it easy to open and clean. At the same time, the cooperation of the float plate, the blocking rod and the negative pressure pipe can automatically close the negative pressure channel when the liquid level reaches the upper limit, preventing waste liquid from overflowing and achieving safe and reliable liquid level control. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the liquid storage tank of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the filter bucket, sliding sleeve, blocking rod, and float plate of the present invention.

[0018] Figure 4This is a diagram showing the installation relationship between the filter frame, the liquid extraction pipe, and the liquid heating tank of the present invention.

[0019] Figure 5 This is a diagram showing the installation relationship between the filter frame and the liquid extraction tube of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of the components on the filter frame of the present invention.

[0021] Figure 7 This is a three-dimensional structural diagram of the rotating structure of the coarse and fine filter screens of the present invention.

[0022] Figure 8 This is a three-dimensional structural diagram of the liquid flow path inside the sleeve of the present invention.

[0023] Figure 9 This is a three-dimensional structural diagram of the components on the liquid heating tank of the present invention.

[0024] Labels in the diagram: 1. Mobile frame; 11. Wheels; 2. Negative pressure pump; 3. Liquid storage tank; 31. Inlet connector; 32. Drain pipe; 33. Top cover; 34. Negative pressure connection; 35. Filter hopper; 36. Spring; 37. Sliding sleeve; 38. Blocking rod; 39. Float; 4. Air pipe; 5. Filter frame; 51. Coarse filter screen; 52. Fine filter screen; 53. Connecting pipe; 54. Valve I; 5 5. Motor; 56. Gear; 57. External gear ring; 58. Internal gear ring; 6. Liquid extraction pipe; 61. Valve II; 62. Sleeve; 63. V-shaped receiving plate; 64. Flushing pipe; 65. Slag discharge pipe; 66. Discharge pipe; 67. Valve III; 7. Liquid heating tank; 71. Heater; 72. Pump body; 73. Water extraction pipe; 74. Drainage pipe; 75. Water distribution pipe; 76. Valve IV; 77. Valve V. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example: A waste liquid aspiration and pipeline anti-clogging flushing device for serum testing, such as... Figures 1-9As shown, the device includes a mobile frame 1, a negative pressure pump 2, a liquid storage tank 3, an air pipe 4, a filter frame 5, and a suction pipe 6. The mobile frame 1 is equipped with wheels 11 at its bottom for easy movement. A handle for assisting in pushing the device is located on the upper left side of the mobile frame 1. The negative pressure pump 2 and a liquid heating tank 7 are mounted on the mobile frame 1. A heater 71 is installed inside the liquid heating tank 7 to maintain the temperature of the liquid inside. The liquid storage tank 3 and the filter frame 5 are located on the side wall of the mobile frame 1. An air pipe 4 connects the negative pressure pump 2 and the liquid storage tank 3. The pneumatic negative pressure pump 2 creates a negative pressure inside the liquid storage tank 3, and the filtered clear liquid is subjected to this negative pressure. The liquid is drawn into the storage tank 3. The inlet end of the filter frame 5 is connected to the suction pipe 6, and the other end of the suction pipe 6 is connected to the waste liquid discharge port of the analyzer. The waste liquid discharged by the analyzer enters the filter frame 5 through the suction pipe 6 for filtration. The filter frame 5 is equipped with a grading filtration structure to perform grading filtration on the incoming waste liquid, reducing the burden on the filtration structure. An anti-clogging flushing structure is set between the suction pipe 6 and the filter frame 5. During the filtration of waste liquid, the suction pipe 6 is kept warm to prevent the flowing waste liquid from solidifying and clogging the suction pipe 6. At the same time, the filtration structure is backwashed to prevent the filtration structure from clogging. The filtration structure includes a coarse filter screen 51 and a fine filter screen 52 that are concentrically rotated within the filter frame 5. The filter frame 5, the coarse filter screen 51, and the fine filter screen 52 are all cylindrical and extend to the left and right. The fine filter screen 52 is outside the coarse filter screen 51. The coarse filter screen 51 is connected to the liquid extraction pipe 6. The waste liquid passes through the liquid extraction pipe 6, first through the coarse filter screen 51 for filtration, and then through the fine filter screen 52 for filtration. The anti-clogging flushing structure includes a sleeve 62 fitted onto the outer surface of the suction pipe 6. An annular flow path exists between the sleeve 62 and the suction pipe 6. Hot water passes through this annular flow path to heat and insulate the waste liquid inside the suction pipe 6, preventing it from solidifying and causing blockage. V-shaped receiving plates 63 are installed below both the coarse filter screen 51 and the fine filter screen 52 (see details for installation). Figure 6 Both the coarse filter screen 51 and the fine filter screen 52 are equipped with flushing pipes 64. The flushing pipes 64 are connected to the sleeve 62 through pipelines. The liquid passing through the sleeve 62 will enter the flushing pipes 64 and be sprayed out through the flushing pipes 64 to flush the coarse filter screen 51 and the fine filter screen 52, and flush the impurities attached to the coarse filter screen 51 and the fine filter screen 52 into the V-shaped receiving plate 63.

[0027] First, move the device to the serum analyzer by using the wheels 11 at the bottom of the mobile frame 1 and the handle on the upper left side, and connect one end of the suction tube 6 to the waste liquid discharge port of the analyzer and the other end to the liquid inlet of the filter frame 5. The negative pressure pump 2 is started, and the negative pressure pump 2 creates a negative pressure in the liquid storage tank 3 through the air pipe 4. Under the action of negative pressure, the waste liquid discharged by the analyzer enters the filter frame 5 through the liquid extraction pipe 6. The waste liquid first enters the interior of the cylindrical coarse filter 51 set in concentric rotation. The coarse filter 51 performs preliminary filtration of the waste liquid and intercepts larger solid impurities. The waste liquid after being filtered by the coarse filter 51 then passes through the outer cylindrical fine filter 52 to further remove fine particles, realizing staged filtration. The filtered clear liquid is sucked into the liquid storage tank 3 for temporary storage under the action of negative pressure. While the waste liquid is being drawn and filtered, the heater 71 in the liquid heating tank 7 heats the liquid to maintain the set temperature of the liquid in the tank. The heated liquid (hot water) is transported through the pipeline to the sleeve 62 that is fitted on the outer surface of the liquid drawing pipe 6. The hot water flows in the annular flow path between the sleeve 62 and the liquid drawing pipe 6 to heat and keep the waste liquid in the liquid drawing pipe 6 warm, preventing impurities such as grease in the waste liquid from solidifying and clogging the liquid drawing pipe 6 due to the decrease in temperature. The hot water flowing through the sleeve 62 continues to enter the flushing pipe 64 set above the coarse filter screen 51 and the fine filter screen 52 through the pipeline. The flushing pipe 64 sprays out hot water to flush the outer surfaces of the coarse filter screen 51 and the fine filter screen 52 respectively, washing off the impurities attached to the filter screen. The washed-off impurities fall into the V-shaped receiving plate 63 set below the coarse filter screen 51 and the fine filter screen 52 to collect the impurities. Through continuous hot water flushing, the filter structure is backwashed online while filtering waste liquid, effectively preventing the filter screen from clogging. During the filtration process, the coarse filter screen 51 and the fine filter screen 52 can rotate concentrically, allowing hot water to evenly flush all parts of the filter screen, improving the backwashing effect and ensuring the continuous and stable operation of the equipment.

[0028] like Figure 1 and Figure 3As shown, the upper side wall of the storage tank 3 is equipped with an inlet connector 31. The filtered waste liquid enters the storage tank 3 through the inlet connector 31. The bottom of the storage tank 3 is equipped with a drain pipe 32 for cleaning and removing the waste liquid in the storage tank 3. A top cover plate 33 is rotatably installed on the top of the storage tank 3. The top cover plate 33 is fixed to the top of the storage tank 3 with bolts or similar fasteners. Opening the cover plate facilitates cleaning of the storage tank 3. A negative pressure pipe 34 is installed through the top cover plate 33. The negative pressure pipe 34 is connected to the upper end of the air pipe 4 to form a negative pressure channel. A filter bucket 35 is placed in the upper part of the storage tank 3. The filter bucket 35 is below the inlet connector 31. The waste liquid entering the storage tank 3 is filtered again by the filter bucket 35. A spring 36 is installed above the filter bucket 35. The top of the spring 36 is connected to the bottom of the top cover plate 33. When the top cover 33 is closed, the spring 36 is in a compressed state. The compressed spring 36 applies downward pressure to the filter bucket 35, making the filter bucket 35 more stable. At the same time, the compressed spring 36 applies upward thrust to the top cover 33. When the fasteners on the top cover 33 are unscrewed, the top cover 33 can be rotated upward to open. A sliding sleeve 37 is vertically arranged at the axis inside the filter bucket 35. A blocking rod 38 is slidably connected inside the sliding sleeve 37. The bottom end of the blocking rod 38 is connected to a float 39. The blocking rod 38 is below the negative pressure pipe 34. When the waste liquid level in the storage tank 3 rises, it drives the float 39 to move upward, which drives the blocking rod 38 to move upward to block the negative pressure pipe. When the waste liquid in the storage tank 3 reaches the upper limit, the negative pressure channel is closed. At this time, the storage tank 3 should be cleaned.

[0029] After filtration, the waste liquid enters the storage tank 3 through the inlet connector 31 on the upper side wall of the storage tank 3. The waste liquid first falls onto the filter bucket 35 below the inlet connector 31, and the filter bucket 35 filters the waste liquid again to further remove residual fine impurities. The filtered clear liquid passes through the filter bucket 35 and enters the bottom of the storage tank 3 for storage. The negative pressure pump 2 is connected to the negative pressure pipe 34 on the top cover plate 33 through the air pipe 4. The negative pressure pipe 34 passes through the top cover plate 33 and communicates with the inside of the liquid storage tank 3 to form a negative pressure channel, so that the liquid storage tank 3 is kept under negative pressure, thereby continuously pumping waste liquid. The top of the spring 36 above the filter hopper 35 contacts the bottom of the top cover 33. When the top cover 33 is closed and fixed by the fasteners, the spring 36 is in a compressed state. The compressed spring 36 applies downward pressure to the filter hopper 35 to make the filter hopper 35 stable. At the same time, the spring 36 applies upward thrust to the top cover 33. When the fasteners are loosened, this thrust can assist the top cover 33 to rotate upward and open, making it convenient to clean the liquid storage tank 3. A sliding sleeve 37 is vertically installed at the center of the filter hopper 35. A blocking rod 38 is slidably connected inside the sliding sleeve 37, and a float plate 39 is connected to the bottom end of the blocking rod 38. The blocking rod 38 is located directly below the negative pressure connection pipe 34. As waste liquid continuously enters the storage tank 3, the liquid level gradually rises. The float plate 39 moves upward under the action of buoyancy, causing the blocking rod 38 to slide upward within the sliding sleeve 37. When the liquid level reaches the upper limit position of the storage tank 3, the top of the blocking rod 38 inserts into the negative pressure connection pipe 34 and blocks it. The negative pressure channel is closed, and the negative pressure pump 2 can no longer draw air from the storage tank 3. The pumping stops, indicating that the storage tank 3 needs to be cleaned. During cleaning, open the drain pipe 32 at the bottom of the storage tank 3 to drain the waste liquid, or open the top cover plate 33 for internal cleaning.

[0030] like Figures 4-7 As shown, a connecting pipe 53 connects the outlet end of the filter frame 5 to the inlet connector 31. The connecting pipe 53 has a valve I 54, which controls the opening and closing of the connecting pipe 53. An internal gear ring 58 is concentrically arranged on the inner end face of the fine filter screen 52, and an external gear ring 57 is concentrically arranged on the inner end face of the coarse filter screen 51. A motor 55 is fixed to the outer end face of the filter frame 5. The output shaft of the motor 55 passes through the filter frame 5 and is connected to a gear 56. The gear 56 meshes with the external gear ring 57 and the internal gear ring 58 simultaneously. The motor 55 drives the gear 56 to rotate, so that the coarse filter screen 51 and the fine filter screen 52 rotate simultaneously, so that each position of the coarse filter screen 51 and the fine filter screen 52 can be rinsed.

[0031] The outlet end of the filter frame 5 is connected to the inlet connector 31 of the storage tank 3 via a connecting pipe 53. A valve I 54 is installed on the connecting pipe 53, controlling the opening and closing of the connecting pipe 53 to control whether the filtered waste liquid enters the storage tank 3. An internal gear ring 58 is concentrically arranged on the inner end face of the fine filter screen 52, and an external gear ring 57 is concentrically arranged on the inner end face of the coarse filter screen 51. A motor 55 is fixedly installed on the outer end face of the filter frame 5. The output shaft of the motor 55 passes through the interior of the filter frame 5 and is connected to a gear 56. This gear 56 meshes with both the external gear ring 57 on the coarse filter screen 51 and the internal gear ring 58 on the fine filter screen 52. When the motor 55 starts, the output shaft of the motor 55 drives the gear 56 to rotate. The gear 56, through the external gear ring 57 and the internal gear ring 58, simultaneously drives the coarse filter screen 51 and the fine filter screen 52 to rotate concentrically. During the rinsing process, the coarse filter screen 51 and the fine filter screen 52 rotate continuously, so that each part of the filter screen can be evenly rinsed by the hot water sprayed from the rinsing pipe 64 above, thereby effectively removing impurities attached to various parts of the filter screen and improving the comprehensiveness and effectiveness of backwashing.

[0032] like Figure 6 and Figure 8As shown, the inlet end of the liquid extraction pipe 6 has a valve II 61, which controls the opening and closing of the liquid extraction pipe 6. The outlet end of the V-shaped receiving plate 63 is connected to a slag discharge pipe 65. The waste slag collected in the V-shaped receiving plate 63 is discharged through the slag discharge pipe 65. The connecting pipe 53 is connected to and connected to a discharge pipe 66. The liquid first passes through the discharge pipe 66 and then through valve I 54. There is a valve III 67 on the discharge pipe 66, which controls the opening and closing of the discharge pipe 66. The bottom end of the slag discharge pipe 65 is connected to and connected to the discharge pipe 66. The discharge pipe 66 is the common outlet for waste slag. The connection position between the slag discharge pipe 65 and the discharge pipe 66 is downstream of valve III 67.

[0033] During normal filtration operation, valve II 61 is open, valve I 54 is open, and valve III 67 is closed. Waste liquid enters filter frame 5 through suction pipe 6, and filtered clear liquid enters storage tank 3 through connecting pipe 53. Because valve III 67 is closed, waste liquid will not be discharged from discharge pipe 66. At the same time, waste residue generated from rinsing the filter screen falls into V-shaped receiving plate 63, and flows through slag discharge pipe 65 into discharge pipe 66 to be discharged outside the equipment.

[0034] like Figure 9 As shown, a pump body 72 is installed at the top of the liquid heating tank 7. The pump body 72 is connected to a water suction pipe 73 that extends into the liquid heating tank 7 at its suction end, and a drain pipe 74 is connected to the discharge end of the pump body 72. The upper end of the drain pipe 74 is connected to and communicates with the sleeve 62. A valve IV 76 is installed on the drain pipe 74 to control the opening and closing of the drain pipe 74. A water distribution pipe 75 is connected and communicates between the drain pipe 74 and the suction pipe 6. A valve V 77 is installed on the water distribution pipe 75 to control the opening and closing of the water distribution pipe 75. Hot water enters the sleeve 62 through the drain pipe 74 to insulate the suction pipe 6. Hot water enters the suction pipe 6 through the water distribution pipe 75 to flush the suction pipe 6.

[0035] When it is necessary to keep the liquid extraction pipe 6 warm, close valve V77, open valve IV76, and start pump body 72. Pump body 72 sends the hot water in liquid heating tank 7 into sleeve 62 through water extraction pipe 73 and drain pipe 74. The hot water flows in the annular flow path between sleeve 62 and liquid extraction pipe 6 to heat and keep the waste liquid in liquid extraction pipe 6 warm. When flushing is required inside the suction pipe 6, close valves IV 76 and I 54, open valves V 77 and III 67, and start pump 72. Hot water enters the suction pipe 6 directly through the suction pipe 73, drain pipe 74, and distribution pipe 75 to flush the inner wall of the suction pipe 6 and remove impurities. The flushed wastewater is discharged through the discharge pipe 66 and will not enter the storage tank 3. After the suction pipe 6 is flushed, if the equipment needs to continue working, close valves V 77 and III 67, and open valves IV 76 and I 54 to keep hot water flowing through the casing 62. After the equipment has finished working, stop pump 72.

[0036] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A waste liquid aspiration and pipeline anti-clogging flushing device for serum testing, characterized in that, The system includes a mobile frame (1), a negative pressure pump (2), a liquid storage tank (3), an air pipe (4), a filter frame (5), and a liquid extraction pipe (6). The mobile frame (1) is equipped with a negative pressure pump (2) and a liquid heating tank (7). The side wall of the mobile frame (1) is provided with a liquid storage tank (3) and a filter frame (5). An air pipe (4) is connected between the negative pressure pump (2) and the liquid storage tank (3). The inlet end of the filter frame (5) is connected to the liquid extraction pipe (6), and the other end of the liquid extraction pipe (6) is connected to the waste liquid discharge port of the analyzer. The filter frame (5) is provided with a filter structure for graded filtration of waste liquid. An anti-clogging flushing structure is provided between the liquid extraction pipe (6) and the filter frame (5). The filter structure includes a coarse filter screen (51) and a fine filter screen (52) that are concentrically rotated within the filter frame (5). The fine filter screen (52) is outside the coarse filter screen (51), and the coarse filter screen (51) is connected to the liquid extraction tube (6). The anti-clogging flushing structure includes a sleeve (62) fitted on the outer surface of the liquid extraction tube (6), a V-shaped receiving plate (63) is provided below the coarse filter (51) and the fine filter (52), and a flushing pipe (64) is provided above the coarse filter (51) and the fine filter (52). The flushing pipe (64) and the sleeve (62) are connected and communicated through pipelines.

2. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 1, characterized in that, The upper side wall of the liquid storage tank (3) is provided with a liquid inlet connector (31), the bottom of the liquid storage tank (3) is provided with a drain pipe (32), the top of the liquid storage tank (3) is rotatably installed with a top cover plate (33), the top cover plate (33) is provided with a negative pressure pipe (34), and the negative pressure pipe (34) is connected to the upper end of the air pipe (4).

3. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 2, characterized in that, A filter bucket (35) is placed in the upper part of the liquid storage tank (3). The filter bucket (35) is below the liquid inlet connector (31). A spring (36) is provided above the filter bucket (35). The top of the spring (36) contacts the bottom of the top cover plate (33). When the top cover plate (33) is closed, the spring (36) is in a compressed state.

4. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 3, characterized in that, A sliding sleeve (37) is vertically arranged at the center of the filter bucket (35). A blocking rod (38) is slidably connected inside the sliding sleeve (37). A float plate (39) is connected to the bottom end of the blocking rod (38). The blocking rod (38) is below the negative pressure pipe (34).

5. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 1, characterized in that, A connecting pipe (53) is connected between the liquid outlet end of the filter frame (5) and the liquid inlet connector (31). A valve I (54) is on the connecting pipe (53). An internal gear ring (58) is concentrically arranged on the inner end face of the fine filter screen (52). An external gear ring (57) is concentrically arranged on the inner end face of the coarse filter screen (51). A motor (55) is fixedly connected to the outer end face of the filter frame (5). The output shaft of the motor (55) passes through the filter frame (5) and is connected to a gear (56). The gear (56) meshes with the external gear ring (57) and the internal gear ring (58) simultaneously.

6. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 5, characterized in that, The inlet end of the liquid extraction pipe (6) is equipped with valve II (61), and the outlet end of the V-shaped receiving plate (63) is connected to a slag discharge pipe (65). The connecting pipe (53) is connected to and connected to a discharge pipe (66). The liquid first passes through the discharge pipe (66) and then through valve I (54). There is valve III (67) on the discharge pipe (66). The bottom end of the slag discharge pipe (65) is connected to and connected to the discharge pipe (66).

7. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 1, characterized in that, The liquid heating tank (7) is equipped with a heater (71).

8. The waste liquid aspiration and pipeline anti-clogging flushing device for serum testing as described in claim 1, characterized in that, A pump body (72) is installed at the top of the liquid heating tank (7). The pump body (72) is connected to a water pumping pipe (73) that extends into the liquid heating tank (7) at the liquid pumping end. The pump body (72) is connected to a drain pipe (74) at the liquid outlet end. The upper end of the drain pipe (74) is connected to and communicates with the sleeve (62). A valve IV (76) is installed on the drain pipe (74). A water distribution pipe (75) is connected and communicates between the drain pipe (74) and the liquid pumping pipe (6). A valve V (77) is installed on the water distribution pipe (75).

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