Pipette pump positioning device and test equipment

Abstract

The utility model discloses a pipette pump positioning device and test equipment, the pipette pump positioning device comprises a positioning installation seat and a pressing mechanism, the positioning installation seat comprises an installation vertical plate and an enclosing plate, the enclosing plate is arranged on a first plate surface of the installation vertical plate and forms a positioning installation space on the first plate surface in an enclosing manner, and the pressing mechanism is arranged on the positioning installation space. The positioning installation space can be used for vertically containing the liquid transfer pump, a bottom opening allowing a pump head of the liquid transfer pump to extend downwards is formed in the bottom of the enclosing plate, the pressing mechanism is arranged on the positioning installation base and used for pressing the liquid transfer pump to the first plate face, and the liquid transfer pump positioning device positions the liquid transfer pump in an abutting mode. Compared with a bolt positioning mode, the device has the advantages that a threaded hole of the pipette pump is prevented from being damaged, meanwhile, the pipette pump can be quickly disassembled and assembled, and the detection efficiency of the pipette pump is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid transfer pump detection, and in particular relates to a liquid transfer pump positioning device and testing equipment. Background Art

[0002] As an indispensable module of medical instruments, the performance of the pipette pump directly affects the detection effect of the instrument and the stability of the equipment. Therefore, before assembling the medical instrument, the pipette pump needs to be tested in various aspects, including but not limited to thrust, pipetting accuracy, CV, etc. During the testing, the issue of how to position the pipette pump will be involved. Fast and stable positioning is of great significance to maintaining consistency and improving efficiency of pipette pump testing and reducing work intensity.

[0003] In existing scenarios, the pipette pump is positioned by using the threaded mounting holes and bolts on the pipette pump. Although this positioning method can meet the positioning requirements of performance testing, this positioning method has two defects. On the one hand, during the disassembly and assembly process and the testing process of the pipette pump, the threaded holes of the pipette pump are at risk of being damaged, which is not conducive to the subsequent assembly of the pipette pump on medical instruments; on the other hand, the operation of tightening the bolts increases the workload of the testers and affects the detection efficiency. Utility Model Content

[0004] In view of the above-mentioned defects or shortcomings, the utility model provides a pipette pump positioning device and a testing device, aiming to solve the technical problems that the existing pipette pump positioning method is low in efficiency and easy to damage the threaded hole.

[0005] To achieve the above-mentioned purpose, the utility model provides a pipette pump positioning device, wherein the pipette pump positioning device includes a positioning mounting seat and a clamping mechanism, the positioning mounting seat includes a mounting vertical plate and an enclosing plate, the enclosing plate is arranged on the first plate surface of the mounting vertical plate and encloses the first plate surface to form a positioning mounting space, the positioning mounting space can be used for vertically accommodating the pipette pump, and the bottom of the enclosing plate is provided with a bottom opening for the pump head of the pipette pump to extend downward, and the clamping mechanism is arranged on the positioning mounting seat and is used to press the pipette pump onto the first plate surface.

[0006] In an embodiment of the utility model, the pipette pump positioning device also includes a first positioning member, which can be elastically and telescopically arranged on the bottom wall of the positioning installation space and is used to abut against the lower end of the pipette pump to press the pipette pump against the top wall of the positioning installation space.

[0007] In an embodiment of the utility model, the enclosing plate includes a top plate, a bottom plate, a first side mounting plate and a second side mounting plate. The top plate and the bottom plate are respectively arranged at the upper and lower ends of the mounting vertical plate and are relatively spaced apart. The first side mounting plate and the second side mounting plate are placed between the top plate and the bottom plate and are relatively spaced apart along the width direction of the mounting vertical plate to enclose and form a positioning installation space. A bottom opening is provided on the bottom plate, and a first positioning member is provided on both sides of the bottom opening of the bottom plate.

[0008] In an embodiment of the utility model, the first positioning member is configured as a positioning bead, a mounting hole for accommodating the positioning bead is formed on the bottom plate, and the ball of the positioning bead extends out of the mounting hole and is used to elastically compress the pipette pump.

[0009] In the embodiment of the utility model, the top plate, the bottom plate, the first side mounting plate and the mounting vertical plate are integrally formed, and the second side mounting plate is detachably arranged on the mounting vertical plate.

[0010] In an embodiment of the utility model, the second side mounting plate includes a side fixing portion, an intermediate bending portion and a lateral positioning portion which are connected in sequence, the side fixing portion and the lateral positioning portion are arranged in parallel, and the side fixing portion is used to be detachably arranged on the first side of the mounting vertical plate, one end of the lateral positioning portion is in contact with the first plate surface, and the lateral positioning portion is arranged at a relative interval to the first side mounting plate, the intermediate bending portion connects the side fixing portion and the lateral positioning portion, and is arranged in close contact with the first plate surface.

[0011] In an embodiment of the utility model, the first side mounting plate has a first abutting portion and a second abutting portion, which are spaced apart in sequence from bottom to top along the height direction of the mounting vertical plate and are used to abut against the lower end and the upper end of the pipette pump respectively, the bottom surface of the first abutting portion is connected to the bottom plate, and the second side mounting plate and the second abutting portion are spaced apart relative to each other.

[0012] In an embodiment of the utility model, the pipette pump positioning device also includes a second positioning member, which can be elastically and telescopically arranged on the first side wall of the positioning installation space and is used to abut against the side of the pipette pump to press the pipette pump against the second side wall of the positioning installation space.

[0013] In an embodiment of the utility model, the clamping mechanism includes a toggle clamp mounting plate and an toggle clamp, wherein the toggle clamp mounting plate is disposed on the mounting vertical plate, and the toggle clamp is horizontally rotatably disposed on the toggle clamp mounting plate and is used to clamp the pipette pump onto the first plate surface.

[0014] In order to achieve the above-mentioned object, the utility model further provides a testing device, wherein the testing device comprises the above-mentioned liquid transfer pump positioning device.

[0015] Through the above technical solution, the pipetting pump positioning device provided by the embodiment of the utility model has the following beneficial effects:

[0016] When using the above-mentioned pipette pump positioning device, including a positioning mounting seat and a clamping mechanism, before testing the pipette pump, the operator first places the pipette pump vertically in the positioning mounting space formed by the mounting vertical plate and the enclosure plate, and then presses the pipette pump onto the first plate surface through the clamping mechanism. The enclosure plate realizes lateral and height limitations on the pipette pump to ensure the accuracy of the test position of the pipette pump. The clamping mechanism positively presses the pipette pump to make the pipette pump stand stably in the positioning mounting space. The pipette pump positioning device uses abutment to position the pipette pump. Compared with the bolt positioning method, it avoids damage to the threaded hole of the pipette pump. At the same time, the pipette pump can be quickly disassembled and assembled, which effectively improves the detection efficiency of the pipette pump.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of assembling the liquid transfer pump on the liquid transfer pump positioning device according to an embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a liquid transfer pump positioning device according to an embodiment of the utility model;

[0021] Figure 3 It is a top view of a pipetting pump positioning device according to an embodiment of the utility model.

[0022] Description of Reference Numerals

[0023] 1 Positioning mounting base 11 Installing vertical plate

[0024] 111 first board surface 112 first side

[0025] 113 Second side 12 Top plate

[0026] 121 guide surface 13 bottom plate

[0027] 131 Bottom opening 14 First side mounting plate

[0028] 141 first abutting portion 142 second abutting portion

[0029] 143 connection part 15 second side mounting plate

[0030] 151 side fastening portion 152 middle bending portion

[0031] 153 Lateral positioning part 2 Clamping mechanism

[0032] 21 Toggle clamp mounting plate 211 Clamp fixing part

[0033] 212 clamp plate bending portion 213 clamp plate mounting portion

[0034] 22 elbow clamp 221 hinge seat

[0035] 222 first connecting rod 223 second connecting rod

[0036] 224 limit part 225 pressure rod

[0037] 3 First positioning piece 4 Second positioning piece

[0038] 5 Pipette Pump 51 Pump Head

[0039] 6 Locate the installation space DETAILED DESCRIPTION

[0040] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] The following describes the liquid transfer pump positioning device and the testing equipment of the present invention with reference to the accompanying drawings.

[0042] like Figure 1 and Figure 2 As shown, the utility model provides a pipette pump positioning device, wherein the pipette pump positioning device comprises:

[0043] The positioning mounting seat 1 comprises a mounting vertical plate 11 and an enclosure plate 10. The enclosure plate 10 is arranged on a first plate surface 111 of the mounting vertical plate 11 and encloses a positioning mounting space 6 on the first plate surface 111. The positioning mounting space 6 can be used to vertically accommodate a liquid transfer pump 5. A bottom opening 131 is provided at the bottom of the enclosure plate 10 for the pump head 51 of the liquid transfer pump 5 to extend downward.

[0044] The pressing mechanism 2 is disposed on the positioning mounting seat 1 and is used to press the liquid transfer pump 5 onto the first plate surface 111 .

[0045] When using the above-mentioned pipette pump positioning device, including the positioning mounting seat 1 and the clamping mechanism 2, before testing the pipette pump 5, the operator first places the pipette pump 5 vertically in the positioning mounting space 6 formed by the mounting vertical plate 11 and the enclosure plate 10, and then presses the pipette pump 5 onto the first plate surface 111 through the clamping mechanism 2. The enclosure plate 10 realizes lateral (X direction) and height (Z direction) limiting of the pipette pump 5 to ensure the accuracy of the test position of the pipette pump 5. The clamping mechanism 2 presses the pipette pump 5 in the forward direction (Y direction) to make the pipette pump 5 stand stably in the positioning mounting space 6. The pipette pump positioning device uses abutment to position the pipette pump 5. Compared with the bolt positioning method, it avoids damage to the threaded hole of the pipette pump 5. At the same time, the pipette pump 5 can be quickly disassembled and assembled, which effectively improves the detection efficiency of the pipette pump 5.

[0046] It is important to note that, see Figure 1 The main function of the enclosing plate 10 is to limit the position of the pipette pump 5 in the X and Z directions. The enclosing plate 10 can either completely enclose the pipette pump 5 or form at least two limiting points in the X and Z directions. Both structures can realize the limiting function of the pipette pump 5. From the perspective of material cost, the enclosing plate 10 in the subsequent embodiments of the utility model preferably has the second structure.

[0047] In the embodiment of the utility model, the pipette pump positioning device also includes a first positioning member 3, which can be elastically and telescopically arranged on the bottom wall of the positioning installation space 6, and is used to abut against the lower end of the pipette pump 5 to press the pipette pump 5 against the top wall of the positioning installation space 6. Whether it is the enclosure plate 10 or the pipette pump 5, there is a certain manufacturing tolerance in its own size compared with the standard size, and it cannot be guaranteed that the enclosure plate 10 can just abut against the pipette pump 5. Therefore, the distance between the top plate 12 and the bottom plate 13 of the enclosure plate 10 is set to be slightly larger than the main body height of the pipette pump 5, and the gap between the top plate 12 of the enclosure plate 10 and the pipette pump 5 is filled by setting the first positioning member 3. The tester aligns the pipette pump 5 with the positioning installation space 6 and puts it in. During this process, the pipette pump 5 abuts against the first positioning member 3. The tester applies force to the pipette pump 5 to compress the first positioning member 3 downward. The distance between the first positioning member 3 and the top plate 12 is greater than the main body height of the pipette pump 5. The pipette pump 5 can be easily put in. After removing the force applied to the pipette pump 5, the first positioning member 3 pushes the pipette pump 5 upward under the action of elastic force, and cooperates with the top plate 12 to fix the pipette pump 5 in the Z direction. In addition, during the test of the pipette pump 5, the pipette pump 5 needs to pick up the gun tip downward. During this process, the pipette pump 5 will be subjected to an upward reaction force, and the upper end of the pipette pump 5 abuts against the top plate 12, which can prevent the pipette pump 5 from moving and ensure that the pipette pump 5 can accurately pick up the gun tip.

[0048] Similarly, to ensure that the liquid transfer pump 5 is fixed in the X direction, in the embodiment of the utility model, the liquid transfer pump positioning device also includes a second positioning member 4, which is elastically and telescopically arranged on the first side wall of the positioning installation space 6, and is used to abut against the side of the liquid transfer pump 5 to press the liquid transfer pump 5 against the second side wall of the positioning installation space 6. Then, the liquid transfer pump 5 is fixed in the X and Z directions by the cooperation of the enclosing plate 10 with the first positioning member 3 and the second positioning member 4, and then the liquid transfer pump 5 is fixed in the Y direction by installing the vertical plate 11 and the clamping mechanism 2, so as to ensure that the liquid transfer pump 5 can be accurately configured to the test position and remain stable during the test.

[0049] In the embodiment of the utility model, the enclosure plate 10 includes a top plate 12, a bottom plate 13, a first side mounting plate 14 and a second side mounting plate 15. The top plate 12 and the bottom plate 13 are respectively arranged at the upper and lower ends of the mounting plate 11 and are spaced apart from each other. The first side mounting plate 14 and the second side mounting plate 15 are placed between the top plate 12 and the bottom plate 13 and are spaced apart from each other along the width direction of the mounting plate 11 to enclose and form a positioning installation space 6. A bottom opening 131 is provided on the bottom plate 13. The bottom plate 13 is provided with a first positioning member 3 on both sides of the bottom opening 131. The second side mounting plate 15 is provided with a second positioning member 4. The first positioning member 3 presses the liquid transfer pump 5 against the top plate 12, and the second positioning member 4 presses the liquid transfer pump 5 against the first side mounting plate 14. Figure 2 The top plate 12, the bottom plate 13, the first side mounting plate 14 and the second side mounting plate 15 are independently arranged without being connected to each other. They only play a basic limiting role, thereby reducing material costs.

[0050] Specifically, a guide surface 121 is provided at one end of the top plate 12 away from the mounting vertical plate 11, and the guide surface 121 is tilted downward. When installing the pipette pump 5, the lower end of the pipette pump 5 can be placed against the first positioning member 3, and then the pipette pump 5 can be slid into the positioning installation space 6 along the guide surface 121, thereby further improving the installation efficiency of the pipette pump 5.

[0051] In the embodiment of the utility model, the first positioning member 3 and the second positioning member 4 are both configured as positioning beads, which include a cylindrical shell, a spring and a ball disposed in the cylindrical shell, an external thread segment is formed on the cylindrical shell, and an internal thread hole for threaded connection with the external thread segment is formed on the bottom plate 13 and the second side mounting plate 15, and the spring is used to drive the ball to partially extend out of the internal thread hole and elastically press the liquid transfer pump 5. Specifically, the end of the ball that abuts against the liquid transfer pump 5 is a spherical surface. During assembly, the thrust of the operator on the liquid transfer pump 5 is decomposed into a component force along the axial direction of the cylindrical shell at the spherical surface to compress the spring.

[0052] In other embodiments of the utility model, the first positioning member 3 and the second positioning member 4 can also be set as a threaded rod with a rubber head, and the bottom plate 13 and the second side mounting plate 15 are formed with internal threaded through holes for connecting the threaded rod. After the liquid transfer pump 5 is placed in the positioning installation space 6, the threaded rod is screwed so that the rubber head abuts against the liquid transfer pump 5, thereby fixing the liquid transfer pump 5 in the X and Z directions. When the first positioning member 3 uses a threaded rod with a rubber head, the first positioning member 3 can be set on the top plate 12 or the bottom plate 13.

[0053] In the embodiment of the utility model, the top plate 12, the bottom plate 13, the first side mounting plate 14 and the mounting vertical plate 11 are integrally formed, and the second side mounting plate 15 is detachably mounted on the mounting vertical plate 11. Figure 1 The side of the pipette pump 5 facing the second side mounting plate 15 is not a complete plane, and there are gaps in some positions. The second side mounting plate 15 is detachable and a suitable installation position can be selected according to different models of pipette pumps 5 to ensure that the second positioning member 4 can accurately abut against the pipette pump 5.

[0054] In an embodiment of the utility model, the second side mounting plate 15 includes a side fixing portion 151, an intermediate bending portion 152 and a lateral positioning portion 153 which are connected in sequence. The side fixing portion 151 and the lateral positioning portion 153 are arranged in parallel, and the side fixing portion 151 is used to be detachably arranged on the first side 112 of the mounting vertical plate 11, one end of the lateral positioning portion 153 is in contact with the first plate surface 111, and the lateral positioning portion 153 is arranged at a relative interval to the first side mounting plate 14, and the intermediate bending portion 152 connects the side fixing portion 151 and the lateral positioning portion 153, and is arranged in close contact with the first plate surface 111. Through the above arrangement, the connecting member and the second positioning member 4 on the second side mounting plate 15 can be installed from the side, and the middle bending portion 152 is extended toward the first side mounting plate 14, so that the gap between the lateral positioning portion 153 and the transfer pump 5 is less than or equal to the normal telescopic distance of the second positioning member 4; at the same time, the middle bending portion 152 forms an L-shaped notch that is clamped with the side corner of the mounting vertical plate 11, which is convenient for installation on the one hand, and can limit the deflection of the second side mounting plate 15 on the other hand, so that the second side mounting plate 15 can be accurately fixed by a single connecting member. Specifically, the above connecting member is preferably a bolt, and a threaded hole for bolt connection is formed on the first side 112.

[0055] In the embodiment of the utility model, the first side mounting plate 14 has a first abutting portion 141 and a second abutting portion 142, which are arranged in sequence from bottom to top along the height direction of the mounting vertical plate 11 and are used to abut against the lower end and the upper end of the liquid transfer pump 5 one by one, respectively, the bottom surface of the first abutting portion 141 is connected to the bottom plate 13, and the second side mounting plate 15 is arranged relatively spaced from the second abutting portion 142. The first abutting portion 141 and the second abutting portion 142 respectively position the lower end and the upper end of the liquid transfer pump 5 to ensure the verticality of the liquid transfer pump 5 on the positioning device; the bottom surface of the first abutting portion 141 is connected to the bottom plate 13, so that the first abutting portion 141 and the bottom plate 13 cooperate to form an L-shaped abutting surface. When installing the liquid transfer pump 5, the tester aligns the corner of the lower end of the liquid transfer pump 5 with the abutting surface, which can quickly perform a preliminary positioning of the liquid transfer pump 5 and improve the installation efficiency.

[0056] Specifically, see Figure 1 The upper end of the pipette pump 5 is provided with a protruding mounting structure, and the first abutting portion 141 and the top plate 12 are spaced apart in the Z direction to avoid the mounting structure. Figure 1 Mounting holes are provided on both sides of the pipetting pump 5, and the mounting plate 11 can be fixed on the frame of the testing equipment through the mounting holes. The first abutting portion 141 and the second abutting portion 142 are connected by a connecting portion 143, and the three form a U-shaped avoidance space for setting the mounting hole.

[0057] like Figure 2 and Figure 3 As shown, in the embodiment of the utility model, the clamping mechanism 2 includes a toggle clamp mounting plate 21 and a toggle clamp 22. The toggle clamp mounting plate 21 is arranged on the second side 113 of the mounting vertical plate 11. The toggle clamp 22 is arranged on the toggle clamp mounting plate 21 so as to be horizontally rotatable and is used to clamp the liquid transfer pump 5 on the first plate surface 111. The clamping mechanism 2 is arranged laterally, and will not interfere with the liquid transfer pump 5 during the disassembly and assembly process of the liquid transfer pump 5.

[0058] Specifically, the elbow clamp 22 includes an articulated seat 221, a first connecting rod 222, a second connecting rod 223 and a pressure rod 225. The articulated seat 221 is connected to the elbow clamp mounting plate 21. The first connecting rod 222 and the second connecting rod 223 are hinged to two hinge points of the articulated seat 221 one by one. The pressure rod 225 is connected to one end of the first connecting rod 222 away from the articulated seat 221 to press the liquid transfer pump 5 against the first plate surface 111. The second connecting rod 223 is formed with a limit portion 224 for stopping the first connecting rod 222 to prevent the first connecting rod 222 from rotating during the detection process. Furthermore, the pressure rod 225 is connected to the first connecting rod 222 by a threaded connection. By screwing the pressure rod 225, the distance between the pressure rod 225 and the mounting vertical plate 11 can be adjusted to adapt to different models of liquid transfer pumps 5, thereby improving the versatility of the liquid transfer pump positioning device.

[0059] More specifically, the toggle clamp mounting plate 21 includes a clamp fixing portion 211, a clamp bending portion 212 and a clamp mounting portion 213 connected in sequence, the clamp fixing portion 211 and the clamp mounting portion 213 are arranged in parallel, and the clamp fixing portion 211 is used to be detachably arranged on the second side 113 of the mounting vertical plate 11, the clamp bending portion 212 abuts against the connecting portion 143 of the first side mounting plate 14, and the clamp mounting portion 213 is used to be connected to the hinge seat 221. The above arrangement enables the pressure rod 225 to press exactly on the center position of the pipetting pump 5 in the X direction, and on the other hand, the clamp bending portion 212 abuts against the connecting portion 143, which facilitates the positioning and installation of the toggle clamp mounting plate 21.

[0060] In order to achieve the above objectives, the utility model also provides a testing device, wherein the testing device includes the above-mentioned pipetting pump positioning device. Since the testing device adopts all the technical solutions of the above-mentioned embodiments, it has at least the above-mentioned beneficial effects, which will not be described one by one here.

[0061] In the description of the present utility model, it should be understood that the terms "X direction", "Y direction" and "Z direction" are only used to describe the relative position relationship between the pipette pump positioning device and the pipette pump, and do not limit their specific installation positions. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pipetting pump positioning device, characterized in that: The pipetting pump positioning device comprises: A positioning mounting seat (1) comprises a mounting vertical plate (11) and an enclosure plate (10), wherein the enclosure plate (10) is arranged on a first plate surface (111) of the mounting vertical plate (11) and encloses a positioning mounting space (6) on the first plate surface (111), wherein the positioning mounting space (6) can accommodate a liquid transfer pump (5) vertically, and a bottom opening (131) is provided at the bottom of the enclosure plate (10) for a pump head (51) of the liquid transfer pump (5) to extend downward; A clamping mechanism (2), the clamping mechanism (2) comprising a toggle clamp mounting plate (21) and an toggle clamp (22), the toggle clamp mounting plate (21) being arranged on the mounting vertical plate (11), the toggle clamp (22) being arranged on the toggle clamp mounting plate (21) in a horizontally rotatable manner and being used for clamping the transfer pump (5) onto the first plate surface (111).

2. The pipetting pump positioning device according to claim 1, characterized in that: The pipette pump positioning device also includes a first positioning member (3), which is elastically and telescopically arranged on the bottom wall of the positioning installation space (6) and is used to abut against the lower end of the pipette pump (5) to press the pipette pump (5) against the top wall of the positioning installation space (6).

3. The pipetting pump positioning device according to claim 2, characterized in that: The enclosure plate (10) comprises a top plate (12), a bottom plate (13), a first side mounting plate (14) and a second side mounting plate (15); the top plate (12) and the bottom plate (13) are respectively arranged at the upper and lower ends of the mounting vertical plate (11) and are arranged relatively spaced apart; the first side mounting plate (14) and the second side mounting plate (15) are placed between the top plate (12) and the bottom plate (13) and are arranged relatively spaced apart along the width direction of the mounting vertical plate (11) to enclose and form the positioning installation space (6); the bottom plate (13) is provided with the bottom opening (131); and the bottom plate (13) is provided with the first positioning member (3) on both sides of the bottom opening (131).

4. The pipetting pump positioning device according to claim 3, characterized in that: The first positioning member (3) is configured as a positioning bead, and a mounting hole for accommodating the positioning bead is formed on the bottom plate (13). The ball of the positioning bead protrudes from the mounting hole and is used to elastically press the liquid transfer pump (5).

5. The pipetting pump positioning device according to claim 3, characterized in that: The top plate (12), the bottom plate (13), the first side mounting plate (14) and the mounting vertical plate (11) are integrally formed, and the second side mounting plate (15) is detachably mounted on the mounting vertical plate (11).

6. The pipetting pump positioning device according to claim 3, characterized in that: The second side mounting plate (15) comprises a side fixing portion (151), an intermediate bending portion (152) and a lateral positioning portion (153) which are connected in sequence, the side fixing portion (151) and the lateral positioning portion (153) are arranged in parallel, and the side fixing portion (151) is used to be detachably arranged on the first side (112) of the mounting vertical plate (11), one end of the lateral positioning portion (153) is in contact with the first plate surface (111), and the lateral positioning portion (153) and the first side mounting plate (14) are arranged at a relative interval, and the intermediate bending portion (152) connects the side fixing portion (151) and the lateral positioning portion (153), and is arranged in close contact with the first plate surface (111).

7. The pipetting pump positioning device according to claim 3, characterized in that: The first side mounting plate (14) comprises a first abutting portion (141) and a second abutting portion (142). The first abutting portion (141) and the second abutting portion (142) are arranged in sequence from bottom to top along the height direction of the mounting vertical plate (11) and are used to abut against the lower end and the upper end of the pipetting pump (5) respectively in a one-to-one correspondence. The bottom surface of the first abutting portion (141) is connected to the bottom plate (13), and the second side mounting plate (15) and the second abutting portion (142) are arranged relatively spaced apart.

8. The pipetting pump positioning device according to any one of claims 1 to 7, characterized in that: The pipette pump positioning device also includes a second positioning member (4), which is elastically and telescopically arranged on the first side wall of the positioning installation space (6) and is used to abut against the side of the pipette pump (5) to press the pipette pump (5) against the second side wall of the positioning installation space (6).

9. A testing device, characterized in that: The testing device comprises a pipetting pump positioning device according to any one of claims 1 to 8.

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