Chromatograph waste liquid storage device

Abstract

The utility model provides a chromatographic instrument waste liquid storage device, which solves the problem that after a waste liquid collection and storage device is full, waste liquid continuously entering the collection and storage device overflows to the ground to volatilize harmful gas. According to the utility model, the alarm device is arranged on the liquid storage barrel for collecting and storing the waste liquid of the chromatograph, so that when the liquid storage barrel is fully loaded, an alarm can be given to an operator through the alarm device, the fully loaded waste liquid in the liquid storage barrel can be discharged in time, and the phenomenon that after the waste liquid is fully collected, the liquid storage barrel is damaged is avoided. And the waste liquid continuously entering the liquid storage barrel overflows to the ground to volatilize harmful gas.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid chromatographs, in particular to a waste liquid storage device for a chromatograph. Background Technique

[0002] Chromatographs generally include gas chromatographs and liquid chromatographs. Among them, a liquid chromatograph refers to an instrument that uses the difference in the distribution ratio of a mixture between a liquid-solid or two immiscible liquids to separate the mixture first and then analyze and identify it. According to whether the stationary phase is a liquid or a solid, liquid chromatographs are further divided into liquid-liquid chromatography and liquid-solid chromatography. Compared with classical liquid column chromatograph devices, modern liquid chromatographs have the characteristics of high efficiency, rapidity, and sensitivity.

[0003] During the use of a liquid chromatograph, waste liquid will be generated, and a waste liquid collection device is required for collection and storage. The traditional waste liquid collection and storage device is directly introduced into the waste liquid collection and storage device by a hose. After the waste liquid collection and storage device is full, the waste liquid that continues to enter the collection and storage device will overflow to the ground and volatilize harmful gases.

[0004] In the prior art, for example, a liquid chromatograph waste liquid collection device disclosed in the Chinese utility model patent with the publication number CN214895054U includes a main body. Brackets are fixedly sleeved in the middle of both sides of the main body, and four alarm devices are fixedly installed at the bottom of the inner cavity of the main body. In this liquid chromatograph waste liquid collection device, by setting an alarm device at the bottom of the water storage bucket, and through the telescopic elasticity of the telescopic rod and the spring in the alarm device, when the waste liquid in the water storage bucket reaches a predetermined position, after the fixed block contacts the alarm, the alarm emits an alarm to remind the staff, which facilitates the use of the staff and meets the user's needs. As the waste liquid in the waste liquid collection and storage device of this device increases, it gradually overcomes the spring resistance to trigger the alarm device to warn the staff. However, the sensitivity of the trigger alarm device is affected by spring fatigue. When the trigger alarm device is in critical contact, the contact is intermittent, resulting in an unsatisfactory warning effect. Summary of the Utility Model

[0005] In order to solve the problem that after the waste liquid collection and storage device is full in the background technique, the waste liquid that continues to enter the collection and storage device will overflow to the ground and volatilize harmful gases, the utility model proposes a waste liquid storage device for a chromatograph.

[0006] The technical solution of the utility model is: a waste liquid storage device for a chromatograph, including a liquid storage bucket. The liquid storage bucket is a hollow cuboid structure. Angle grooves are opened at the bottom corners of the liquid storage bucket, and a discharge pipe communicating with the liquid storage bucket is fixedly arranged in the angle grooves, and a valve is fixedly arranged on the discharge pipe;

[0007] A groove is provided at the top end of the liquid storage barrel. A handle is fixedly arranged in the groove, and the handle is located in the middle of the top end of the liquid storage barrel. An upward-extending feed pipe is fixedly arranged in the groove. The bottom end of the feed pipe is communicated with the liquid storage barrel. The top end of the feed pipe is detachably fixedly provided with a barrel cover. A through hole penetrating up and down is provided on the barrel cover. A rubber plug is fixedly penetrated in the through hole. A waste liquid pipe is fixedly penetrated in the rubber plug. The bottom end of the waste liquid pipe penetrates out of the rubber plug and extends into the feed pipe. The top end of the waste liquid pipe penetrates out of the rubber plug and is communicated with the waste liquid port of the chromatograph.

[0008] An alarm device is provided on the barrel cover, and the alarm device is used to give a warning when the liquid storage barrel is full.

[0009] Preferably, the alarm device includes a guiding cylinder fixedly arranged at the top end of the liquid storage barrel. The guiding cylinder includes a square groove extending in the up and down direction and having a lower opening structure. A square rod is slidably arranged in the square groove. The bottom end of the square rod penetrates into the liquid storage barrel and is fixedly provided with a floating block. The floating block is a hollow cylindrical structure.

[0010] There is a space between the top end of the square rod and the top end of the square groove. A first annular conductive sheet is fixedly arranged at the top end of the square rod. A second annular conductive sheet is fixedly arranged at the top end of the square groove. The first annular conductive sheet is electrically connected to the positive electrode of the power supply system through a circuit respectively. A buzzer is fixedly arranged on the liquid storage barrel. The second annular conductive sheet is electrically connected to the positive electrode of the buzzer through a circuit. The negative electrode of the buzzer is electrically connected to the negative electrode of the power supply system. When the first annular conductive sheet contacts the second annular conductive sheet, the buzzer is in a conducting state.

[0011] Preferably, a hole with a left-opening structure is provided at the top end of the square rod. A slider is slidably arranged in the hole. A spring is arranged between the slider and the right end of the hole. A concave hole is provided on the inner wall of the guiding cylinder. When the hole can be aligned with the concave hole left and right, the spring pushes the slider to be clamped in the concave hole.

[0012] Preferably, a lifting rod extending upward is fixedly arranged at the top end of the square rod. Both the first annular conductive sheet and the second annular conductive sheet are sleeved on the lifting rod. The top end of the lifting rod penetrates through the guiding cylinder and is fixedly provided with a reset button. When the bottom end of the reset button abuts against the top end of the guiding cylinder, the hole is aligned with the concave hole left and right.

[0013] Preferably, a filter cylinder is detachably fixedly arranged in the barrel cover. The filter cylinder is located in the feed pipe. The waste liquid pipe is located in the filter cylinder, and the bottom end of the filter cylinder is higher than the top end of the liquid storage barrel.

[0014] Preferably, a right-angle pipe is fixedly penetrated in the rubber plug. The bottom end of the right-angle pipe penetrates out of the rubber plug and extends into the filter cylinder. The top end of the right-angle pipe extends leftward and penetrates out of the rubber plug.

[0015] Preferably, a filter is fixedly arranged at the left end of the right-angle pipe after the left end of the right-angle pipe penetrates out of the rubber plug.

[0016] Advantages of the present utility model: By providing an alarm device on the liquid storage barrel for collecting and storing the waste liquid of the chromatograph, when the liquid storage barrel is full, the alarm device can give a warning to the operator through the alarm device, enabling the operator to timely drain the full waste liquid in the liquid storage barrel, avoiding the waste liquid that continues to enter the liquid storage barrel after it is full from overflowing onto the ground and volatilizing harmful gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 For the present utility model Figure 1 Another perspective structural schematic diagram;

[0020] Figure 3 For the present utility model Figure 1 The front sectional view of the barrel cover in the present utility model;

[0021] Figure 4 For the present utility model Figure 1 The front sectional view of the alarm device in the present utility model.

[0022] In the figure: 1. Liquid storage barrel; 11. Groove; 12. Handle; 2. Feed pipe; 21. Barrel cover; 3. Rubber plug; 4. Waste liquid pipe; 5. Filter cylinder; 6. Right-angle pipe; 61. Filter; 7. Alarm device; 71. Guide cylinder; 72. Square rod; 721. Lifting rod; 722. Reset button; 73. Float; 74. First annular conductive sheet; 75. Second annular conductive sheet; 76. Hole; 77. Slide block; 78. Spring; 8. Buzzer; 9. Discharge pipe; 91. Valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0024] Embodiment 1: A waste liquid storage device for a chromatograph, as Figures 1-4As shown in the figure, it includes a liquid storage bucket 1. The liquid storage bucket 1 is a hollow cuboid structure and is made of polyethylene, which can resist the corrosion of waste liquid. At the bottom corner of the liquid storage bucket 1, a corner groove is provided, and a discharge pipe 9 communicating with the liquid storage bucket 1 is fixedly arranged in the corner groove. A valve 91 is fixedly arranged on the discharge pipe 9. A groove 11 is provided at the top of the liquid storage bucket 1, and a handle 12 is fixedly arranged in the groove 11. The handle 12 is located in the middle of the top of the liquid storage bucket 1. A feeding pipe 2 extending upward is fixedly arranged in the groove 11. The bottom end of the feeding pipe 2 is communicated with the liquid storage bucket 1, and the top end of the feeding pipe 2 is provided with an external thread. A bucket cover 21 with a downward opening structure is sleeved on the feeding pipe 2 through the external thread. A through hole penetrating up and down is provided on the bucket cover 21, and a rubber plug 3 is fixedly penetrated in the through hole. A waste liquid pipe 4 is fixedly penetrated in the rubber plug 3. The bottom end of the waste liquid pipe 4 penetrates out of the rubber plug 3 and extends into the feeding pipe 2, and the top end of the waste liquid pipe 4 penetrates out of the rubber plug 3 and is communicated with the waste liquid port of the chromatograph. The waste liquid pipe 4 is used to guide the waste liquid generated during the analysis of the chromatograph into the liquid storage bucket 1 for storage.

[0025] An external thread sleeve is fixedly arranged in the bucket cover 21, and a filter cylinder 5 with an upward opening structure is threadedly connected to the bucket cover 21 through the external thread sleeve. The filter cylinder 5 is located in the feeding pipe 2, and the waste liquid pipe 4 is located in the filter cylinder 5. The filter cylinder 5 can filter and collect the solid impurities in the waste liquid to prevent these impurities from affecting the subsequent treatment of the waste liquid. The bottom end of the filter cylinder 5 is higher than the top end of the liquid storage bucket 1 to avoid the filter cylinder 5 being deteriorated due to the long-term immersion of the waste liquid in the filter cylinder 5 when the liquid storage bucket 1 is full.

[0026] A right-angle pipe 6 is fixedly penetrated in the rubber plug 3. The bottom end of the right-angle pipe 6 penetrates out of the rubber plug 3 and extends into the filter cylinder 5, and the top end of the right-angle pipe 6 extends leftward and penetrates out of the rubber plug 3. The right-angle pipe 6 can discharge part of the air in the liquid storage bucket 1 when the waste liquid enters the liquid storage bucket 1 to balance the pressure inside and outside the liquid storage bucket 1. A filter 61 is fixedly arranged at the left end of the right-angle pipe 6 penetrating out of the rubber plug 3. The filter 61 is used to filter the harmful gases volatilized from the waste liquid in the liquid storage bucket 1. For those skilled in the art, the filter 61 belongs to the well-known technology, so it will not be elaborated too much.

[0027] An alarm device 7 is provided on the barrel cover 21. The alarm device 7 is used to give a warning when the liquid storage barrel 1 is full. Specifically, the alarm device 7 includes a guiding cylinder 71 fixedly provided at the top end of the liquid storage barrel 1. The guiding cylinder 71 includes a square groove extending in the up and down direction and having a lower opening structure. A square rod 72 is slidably provided in the square groove. The bottom end of the square rod 72 penetrates into the liquid storage barrel 1 and is fixedly provided with a floating block 73. The floating block 73 is made of polyethylene, which can avoid being corroded by the waste liquid of the chromatograph. And the floating block 73 is a hollow cylindrical structure, which can further increase the buoyancy of the floating block 73 in the waste liquid. There is a gap between the top end of the square rod 72 and the top end of the square groove. A first annular conductive sheet 74 is fixedly provided at the top end of the square rod 72, and a second annular conductive sheet 75 is fixedly provided at the top end of the square groove. The first annular conductive sheet 74 is electrically connected to the positive electrode of the power supply system through a circuit. For those skilled in the art, the power supply system belongs to well-known technology, so it will not be elaborated too much. A buzzer 8 is fixedly provided on the liquid storage barrel 1. The second annular conductive sheet 75 is electrically connected to the positive electrode of the buzzer 8 through a circuit, and the negative electrode of the buzzer 8 is electrically connected to the negative electrode of the power supply system. The floating block 73 can drive the square rod 72 to move upward as the height of the waste liquid in the liquid storage barrel 1 increases, bringing the first annular conductive sheet 74 into contact with the second annular conductive sheet 75, so that the buzzer 8 is in a conducting state, thus facilitating the reminder to the operator, so that the operator can timely drain the full waste liquid in the liquid storage barrel 1, avoiding that when the waste liquid collection is full, the waste liquid continuing to enter the liquid storage barrel 1 will overflow to the ground and volatilize harmful gases.

[0028] A hole 76 with a left-opening structure is provided at the top end of the square rod 72. A slider 77 is slidably provided in the hole 76. A spring 78 is provided between the slider 77 and the right end of the hole 76. A concave hole is provided on the inner wall of the guiding cylinder 71. When the hole 76 can be aligned with the concave hole left and right, the spring 78 pushes the slider 77 to be clamped in the concave hole. As the waste liquid increases to be almost full, when the buoyancy of the floating block 73 is greater than the resistance of the square rod 72 caused by the slider 77 being clamped in the concave hole, the slider 77 retracts into the hole 76, and the square rod 72 moves upward under the buoyancy from the floating block 73, bringing the first annular conductive sheet 74 into contact with the second annular conductive sheet 75, so that the buzzer 8 is in a conducting state, thus reminding the operator. And when the waste liquid in the liquid storage barrel 1 is full, the buoyancy received by the floating block 73 is much greater than the resistance of the slider 77 being clamped in the concave hole, avoiding the buzzer 8 not being able to be triggered in time due to the influence of friction or other factors. And the cooperation setting of the spring 78, the slider 77 and the concave hole can avoid that when the floating block 73 drives the square rod 72 to move upward and the first annular conductive sheet 74 and the second annular conductive sheet 75 are in critical contact, the contact is intermittent, resulting in an unsatisfactory warning effect and at the same time causing damage to the buzzer 8.

[0029] At the top end of the square rod 72, a lifting rod 721 extending upward is fixedly provided. Both the first annular conductive sheet 74 and the second annular conductive sheet 75 are sleeved on the lifting rod 721. The top end of the lifting rod 721 passes through the guiding cylinder 71 and is fixedly provided with a reset button 722. The bottom end of the reset button 722 abuts against the top end of the guiding cylinder 71. At this time, the hole 76 can be aligned with the concave hole left and right, so that the spring 78 pushes the slider 77 to be clamped in the concave hole; by pressing the reset button 722, the square rod 72 can be driven to move downward and reset by the lifting rod 721, so that the first annular conductive sheet 74 and the second annular conductive sheet 75 are separated from each other.

[0030] Working principle: As the water level of the waste liquid in the liquid storage barrel 1 gradually rises, the buoyancy of the floating block 73 gradually increases. Until the buoyancy of the floating block 73 is greater than the resistance of the square rod 72 caused by the slider 77 being clamped in the concave hole, the slider 77 retracts into the hole 76, and the square rod 72 moves upward under the buoyancy from the floating block 73, bringing the first annular conductive sheet 74 into contact with the second annular conductive sheet 75, so that the buzzer 8 is in a conducting state, thereby reminding the operator to drain the waste liquid in the liquid storage barrel 1. Then press the reset button 722 to the top end of the guiding cylinder 71, so that the hole 76 can be aligned with the concave hole left and right, and the spring 78 pushes the slider 77 to be clamped in the concave hole again.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A waste liquid storage device for a chromatograph, characterized in that: It includes a liquid storage barrel (1). The liquid storage barrel (1) is a hollow cuboid structure. Angle grooves are provided at the bottom corners of the liquid storage barrel (1). An outlet pipe (9) communicating with the liquid storage barrel (1) is fixedly provided in the angle groove. A valve (91) is fixedly provided on the outlet pipe (9). A groove (11) is provided at the top of the liquid storage barrel (1). A handle (12) is fixedly provided in the groove (11). The handle (12) is located in the middle of the top of the liquid storage barrel (1). A feed pipe (2) extending upward is fixedly provided in the groove (11). The bottom end of the feed pipe (2) communicates with the liquid storage barrel (1). A barrel cover (21) is detachably and fixedly provided at the top end of the feed pipe (2). A through hole penetrating up and down is provided on the barrel cover (21). A rubber plug (3) is fixedly inserted in the through hole. A waste liquid pipe (4) is fixedly inserted in the rubber plug (3). The bottom end of the waste liquid pipe (4) penetrates out of the rubber plug (3) and extends into the feed pipe (2). The top end of the waste liquid pipe (4) penetrates out of the rubber plug (3) and communicates with the waste liquid port of the chromatograph. An alarm device (7) is provided on the barrel cover (21). The alarm device (7) is used to give a warning when the liquid storage barrel (1) is full.

2. The waste liquid storage device of a chromatograph according to claim 1, wherein: The alarm device (7) includes a guide cylinder (71) fixedly provided at the top of the liquid storage barrel (1). The guide cylinder (71) includes a square groove extending in the up and down direction and having a lower opening structure. A square rod (72) is slidably provided in the square groove. The bottom end of the square rod (72) penetrates into the liquid storage barrel (1) and is fixedly provided with a floating block (73). The floating block (73) is a hollow cylindrical structure. A space is provided between the top end of the square rod (72) and the top end of the square groove. A first annular conductive sheet (74) is fixedly provided at the top end of the square rod (72). A second annular conductive sheet (75) is fixedly provided at the top end of the square groove. The first annular conductive sheet (74) is electrically connected to the positive electrode of the power supply system through a circuit. A buzzer (8) is fixedly provided on the liquid storage barrel (1). The second annular conductive sheet (75) is electrically connected to the positive electrode of the buzzer (8) through a circuit. The negative electrode of the buzzer (8) is electrically connected to the negative electrode of the power supply system. When the first annular conductive sheet (74) contacts the second annular conductive sheet (75), the buzzer (8) is in a conductive state.

3. The waste liquid storage device of a chromatograph according to claim 2, characterized in that: A hole (76) with a left opening structure is provided at the top end of the square rod (72). A slider (77) is slidably provided in the hole (76). A spring (78) is provided between the slider (77) and the right end of the hole (76). A concave hole is provided on the inner wall of the guide cylinder (71). When the hole (76) can be aligned with the concave hole left and right, the spring (78) pushes the slider (77) to be clamped in the concave hole.

4. A waste liquid storage device for a chromatograph according to claim 2, characterized in that: A lifting rod (721) extending upward is fixedly provided at the top end of the square rod (72). Both the first annular conductive sheet (74) and the second annular conductive sheet (75) are sleeved on the lifting rod (721). The top end of the lifting rod (721) penetrates through the guide cylinder (71) and is fixedly provided with a reset button (722). When the bottom end of the reset button (722) abuts against the top end of the guide cylinder (71), the hole (76) is aligned with the concave hole left and right.

5. The waste liquid storage device of a chromatograph according to claim 1, characterized in that: A filter cartridge (5) is detachably fixed inside the barrel cover (21). The filter cartridge (5) is located inside the feed pipe (2). The waste liquid pipe (4) is located inside the filter cartridge (5), and the bottom end of the filter cartridge (5) is higher than the top end of the liquid storage barrel (1).

6. The waste liquid storage device of a chromatograph according to claim 1, characterized in that: A right-angle pipe (6) is fixedly inserted through the rubber stopper (3). The bottom end of the right-angle pipe (6) passes through the rubber stopper (3) and extends into the filter cartridge (5). The top end of the right-angle pipe (6) extends leftward and passes through the rubber stopper (3).

7. A waste liquid storage device for a chromatograph according to claim 6, characterized in that: The left end of the right-angle pipe (6) passes through the rubber stopper (3) and is fixedly provided with a filter (61).

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