Vacuum system for suction head

Abstract

The utility model discloses a vacuum system for a suction head. The vacuum system comprises a vacuum driving assembly, a pressure storage assembly and a vacuum control assembly, the vacuum driving assembly is communicated with the vacuum control assembly, the pressure storage assembly is communicated with the vacuum control assembly, and the vacuum control assembly is respectively communicated with the suction head and the working cabin; the vacuum driving assembly can perform vacuum extraction on the pressure storage assembly through the vacuum control assembly, the vacuum control assembly is matched with the pressure storage assembly and the vacuum driving assembly to form suction head positive pressure or negative pressure, and a sample tube is sucked or placed through the suction head. The vacuum system has the advantages that the two pipelines of the vacuum system are connected into the suction head and the working cabin respectively, the negative pressure vacuum suction pipe and the positive pressure vacuum breaking discharge pipe of the vacuum suction head are achieved respectively by controlling opening and closing of the three sets of electromagnetic valves, gas comes from the working cabin communicated with the other pipeline, and full sealing is achieved; and external gas is prevented from being introduced to damage a dry environment in the working cabin, so that samples or equipment parts in the low-temperature storage area are prevented from frosting / icing.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample storage technical field, especially a vacuum system for suction head. BACKGROUND

[0002] In the field of biological sample library, the cryopreservation tube for containing biological samples is small in individual, and vacuum suction is often used when the tube is accessed, and the vacuum pump needs to provide vacuum for vacuum suction. When the vacuum pump is loosened, gas needs to be introduced to break the vacuum under positive pressure, and the sample tube transfer operation is usually carried out in the working cabin, and the internal environment of the working cabin is usually disinfected and dehumidified, and the introduction of external gas can easily destroy the stable environment.

[0003] Therefore, the utility model person designs a vacuum system for suction head. CONTENT OF THE UTILITY MODEL

[0004] This part aims to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract of the specification and the utility model name to avoid obscuring the purpose of this part, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above or the problems existing in the prior art, the utility model is proposed.

[0006] Therefore, the utility model aims to provide a vacuum system for suction head, which can realize negative pressure and positive pressure of the vacuum suction head by controlling the opening and closing of three groups of electromagnetic valves, so as to realize the suction and placement of samples, and the gas source is the working cabin in communication, which realizes full sealing, avoids the introduction of external gas to destroy the dry environment in the working cabin, and causes the sample or mechanical equipment in the working cabin to frost.

[0007] To solve the above technical problems, the utility model provides the following technical scheme: a vacuum system for suction head, comprising a vacuum driving assembly, a pressure storage assembly and a vacuum control assembly; the vacuum driving assembly and the vacuum control assembly are in communication, the pressure storage assembly and the vacuum control assembly are in communication, the vacuum control assembly is in communication with the suction head and the working cabin respectively; the vacuum driving assembly can perform vacuum extraction on the pressure storage assembly through the vacuum control assembly, the vacuum control assembly cooperates with the pressure storage assembly and the vacuum driving assembly to form positive pressure or negative pressure of the suction head, and the suction head is used to suck or place the sample tube.

[0008] As a preferred scheme of the utility model nozzle vacuum system, wherein: vacuum control assembly includes first pipeline control piece, and second pipeline control piece, vacuum drive assembly is connected to first pipeline control piece and second pipeline control piece respectively, first pipeline control piece and second pipeline control piece can be communicated, and second pipeline control piece is connected with pressure storage assembly.

[0009] As a preferred scheme of the utility model nozzle vacuum system, wherein: first pipeline control piece includes A electromagnetic valve, first connecting pipe, second connecting pipe and work cabin connecting pipe, first connecting pipe is communicated with A electromagnetic valve and vacuum drive assembly, and second connecting pipe is connected with A electromagnetic valve and work cabin connecting pipe.

[0010] As a preferred scheme of the utility model nozzle vacuum system, wherein: second pipeline control piece includes C electromagnetic valve, third connecting pipe and fourth connecting pipe, third connecting pipe is connected with C electromagnetic valve and vacuum drive assembly, and fourth connecting pipe is connected with C electromagnetic valve and work cabin connecting pipe.

[0011] As a preferred scheme of the utility model nozzle vacuum system, wherein: second pipeline control piece further includes fifth pipeline, sixth pipeline, vacuum pressure switch and vacuum nozzle pipeline, fifth pipeline is connected with vacuum pressure switch and C electromagnetic valve, sixth pipeline is connected with fifth pipeline and pressure storage assembly, and vacuum pressure switch is connected with vacuum nozzle pipeline.

[0012] As a preferred scheme of the utility model nozzle vacuum system, wherein: one side of vacuum nozzle pipeline is connected with vacuum filter, and the vacuum filter is arranged at the side of vacuum pressure switch.

[0013] As a preferred scheme of the utility model nozzle vacuum system, wherein: pressure storage assembly includes pressure storage tank and third pipeline control piece, and third pipeline control piece is connected with pressure storage tank and second pipeline control piece.

[0014] As a preferred scheme of the utility model nozzle vacuum system, wherein: third pipeline control piece includes B electromagnetic valve, seventh pipeline and eighth pipeline, seventh pipeline is connected with B electromagnetic valve and one end of pressure storage tank, and eighth pipeline is connected with pressure storage tank and other end of B electromagnetic valve.

[0015] As a preferred scheme of the utility model nozzle vacuum system, wherein: pressure storage tank can form negative pressure with A electromagnetic valve, vacuum drive assembly, C electromagnetic valve and work cabin.

[0016] As a preferred scheme of the utility model pipette tip vacuum system, wherein: vacuum drive assembly and A solenoid valve, B solenivet, C solenivet, pressure tank, vacuum filter, vacuum pressure switch, pipette tip and working cabin can form series negative pressure loop, and pipette tip can negative pressure suction sample tube.

[0017] As a preferred scheme of the utility model pipette tip vacuum system, wherein: vacuum drive assembly and A solenoid valve, C solenivet, vacuum pressure switch, vacuum filter, pipette tip and working cabin can form series positive pressure loop, and pipette tip can positive pressure place sample tube.

[0018] As a preferred scheme of the utility model pipette tip vacuum system, wherein: A solenoid valve, B solenivet, C solenivet are in power-off state: 2 way port and 3 way port of A solenivet, B solenivet, C solenivet are connected, and pressure tank is in off closed state;At this time, working cabin, 3 way 2 way port of C solenivet, vacuum drive assembly, 2 way 3 way port of A solenivet, pressure tank constitute series, and gas in pressure tank is extracted into working cabin, and pressure tank forms negative pressure.

[0019] As a preferred scheme of the utility model pipette tip vacuum system, wherein: A solenoid valve, C solenivet power-off state, B solenivet power-on state: 2 way port and 3 way port of A solenivet and C solenivet are connected, 2 way port and 1 way port of B solenivet are connected, and pipette tip, vacuum pressure switch, vacuum filter, 2 way port and 1 way port of B solenivet, pressure tank, 3 way and 2 way port of A solenivet, vacuum drive assembly, 2 way port and 3 way port of C solenivet and working cabin constitute series loop, and pipette tip negative pressure suction cryopreservation tube, and vacuum pressure switch feedback negative pressure suction signal.

[0020] As a preferred scheme of the utility model pipette tip vacuum system, wherein: A solenoid valve, C solenivet power-on state, B solenivet power-off state: 2 way port and 1 way port of A solenivet and C solenivet are connected, pressure tank is off closed state, and pipette tip, vacuum pressure switch, vacuum filter, 2 way port and 1 way port of C solenivet, vacuum drive assembly, 1 way and 2 way port of A solenivet and working cabin constitute series loop, and pipette tip positive pressure release cryopreservation tube.

[0021] The utility model discloses the beneficial effect: the utility model passes through vacuum system two pipes and connects pipette tip and working cabin respectively, realizes negative pressure vacuum pipette of vacuum pipette tip and positive pressure break vacuum release pipe through the control of the opening and closing of three groups of solenoids, and the gas is all derived from the working cabin of another pipe connection, realizes full closure, avoids the dry environment in working cabin to be destroyed by introducing external gas, causes the sample or equipment component of low temperature storage area frost / ice. ACCURACY

[0022] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of not deviating from the connotation of the present application.

[0023] Figure 1 It is a perspective view of the vacuum system for the suction head.

[0024] Figure 2 It is a top view of the vacuum system for the suction head.

[0025] Figure 3 It is a front view of the vacuum system for the suction head.

[0026] Figure 4 It is a schematic view of the principle of the vacuum system for the suction head.

[0027] The drawings are as follows: vacuum driving assembly, 1; pressure storage assembly, 2; vacuum control assembly, 3; first pipeline control piece, 31; second pipeline control piece, 32; A electromagnetic valve, 311; first connecting pipe, 312; second connecting pipe, 313; working cabin connecting pipe, 314; C electromagnetic valve, 321; third connecting pipe, 322; fourth connecting pipe, 323; fifth pipeline, 324; sixth pipeline, 326; vacuum pressure switch, 327; vacuum suction head pipeline, 328; vacuum filter, 329; pressure storage tank, 21; third pipeline control piece, 22; B electromagnetic valve, 221; seventh pipeline, 222; eighth pipeline, 223; DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0029] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without deviating from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0030] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment. Embodiment 1

[0031] ReferenceFigures 1-4 For the first embodiment of the utility model, the embodiment provides a vacuum system for a suction head, which comprises a vacuum driving assembly 1, a pressure storage assembly 2 and a vacuum control assembly 3; the vacuum driving assembly 1, the pressure storage assembly 2 and the vacuum control assembly 3 work in cooperation, so that the positive pressure and the negative pressure of the suction head can be realized.

[0032] Specifically, the vacuum driving assembly 1, the pressure storage assembly 2 and the vacuum control assembly 3 are included; the vacuum driving assembly 1 is in communication with the vacuum control assembly 3, the pressure storage assembly 2 is in communication with the vacuum control assembly 3, the vacuum control assembly 3 is in communication with the suction head and the working cabin respectively; the vacuum driving assembly 1 can perform vacuum extraction on the pressure storage assembly 2 through the vacuum control assembly 3; the vacuum control assembly 3 cooperates with the pressure storage assembly 2 and the vacuum driving assembly 1 to form the positive pressure or the negative pressure of the suction head, and the sample tube is sucked or placed by the suction head.

[0033] Further, the vacuum control assembly 3 comprises a first pipeline control piece 31 and a second pipeline control piece 32; the vacuum driving assembly 1 is connected with the first pipeline control piece 31 and the second pipeline control piece 32 respectively; the first pipeline control piece 31 and the second pipeline control piece 32 are in communication; the second pipeline control piece 32 is connected with the pressure storage assembly 2.

[0034] Further, the first pipeline control piece 31 comprises an A electromagnetic valve 311, a first connecting pipe 312, a second connecting pipe 313 and a working cabin connecting pipe 314; the first connecting pipe 312 is in communication with the A electromagnetic valve 311 and the vacuum driving assembly 1; the second connecting pipe 313 is connected with the A electromagnetic valve 311 and the working cabin connecting pipe 314.

[0035] Preferably, the working cabin connecting pipe 314 is connected with the operation cabin, so that the dry environment in the working cabin and the mechanical equipment or sample frost can be avoided by the working cabin connecting pipe 314.

[0036] Further, the second pipeline control piece 32 comprises a C electromagnetic valve 321, a third connecting pipe 322 and a fourth connecting pipe 323; the third connecting pipe 322 is connected with the C electromagnetic valve 321 and the vacuum driving assembly 1; the fourth connecting pipe 323 is connected with the C electromagnetic valve 321 and the working cabin connecting pipe 314.

[0037] Further, the second pipeline control piece 32 further comprises a fifth pipeline 324, a sixth pipeline 326, a vacuum pressure switch 327 and a vacuum suction head pipeline 328; the fifth pipeline 324 is connected with the vacuum pressure switch 327 and the C electromagnetic valve 321; the sixth pipeline 326 is connected with the fifth pipeline 324 and the pressure storage assembly 2; the vacuum pressure switch 327 is connected with the vacuum suction head pipeline 328.

[0038] Preferably, the opening and closing of the internal ports of the A solenoid valve 311, the C solenoid valve 321 and the B solenoid valve 221 can form a series loop with the corresponding pipelines.

[0039] Further, the vacuum suction head pipeline 328 is connected with a vacuum filter 329 which is arranged at the side of the vacuum pressure switch 327.

[0040] Preferably, the vacuum filter 329 can prevent gas pollution.

[0041] Further, the pressure storage assembly 2 comprises a pressure storage tank 21 and a third pipeline control member 22, and the third pipeline control member 22 is connected with the pressure storage tank 21 and the second pipeline control member 32.

[0042] Further, the third pipeline control member 22 comprises the B solenoid valve 221, a seventh pipeline 222 and an eighth pipeline 223, the seventh pipeline 222 is connected with the B solenoid valve 221 and one end of the pressure storage tank 21, and the eighth pipeline 223 is connected with the other end of the pressure storage tank 21 and the B solenoid valve 221.

[0043] Further, the pressure storage tank 21, the A solenoid valve 311, the vacuum driving assembly 1, the C solenoid valve 321 and the working cabin can form a series loop, and the pressure storage tank 21 can form a negative pressure.

[0044] Further, the vacuum driving assembly 1, the A solenoid valve 311, the B solenoid valve 221, the C solenoid valve 321, the pressure storage tank 21, the vacuum filter 329, the vacuum pressure switch 327, the suction head and the working cabin can form a series negative pressure loop, and the suction head can suck the sample tube under negative pressure.

[0045] Preferably, the suction head can suck the sample tube under negative pressure to realize the picking work.

[0046] Preferably, the vacuum driving assembly 1 comprises a vacuum pump, and the vacuum pump can perform vacuumization on the pressure storage tank 21.

[0047] Further, the vacuum driving assembly 1, the A solenoid valve 311, the C solenoid valve 321, the vacuum pressure switch 327, the vacuum filter 329, the suction head and the working cabin can form a series positive pressure loop, and the suction head can place the sample tube under positive pressure.

[0048] Further, the A solenoid valve 311, the B solenoid valve 221 and the C solenoid valve 321 are in a power-off state, the 2-way port and the 3-way port of the A solenoid valve 311, the B solenoid valve 221 and the C solenoid valve 321 are connected, and the pressure storage tank 21 is in a closed state; at this time, the working cabin, the 3-way 2-way port of the C solenoid valve 321, the vacuum driving assembly 1, the 2-way 3-way port of the A solenoid valve 311 and the pressure storage tank 21 form a series loop, the gas in the pressure storage tank 21 is sucked into the working cabin, and the pressure storage tank 21 forms a negative pressure.

[0049] Further, the A solenoid valve 311 and the C solenoid valve 321 are in a de-energized state, and the B solenoid valve 221 is in an energized state: the 2-way port and the 3-way port of the A solenoid valve 311 and the C solenoid valve 321 are connected, the 2-way port and the 1-way port of the B solenoid valve 221 are connected, the suction head, the vacuum pressure switch 327, the vacuum filter 329, the 2-way port and the 1-way port of the B solenoid valve 221, the pressure storage tank 21, the 3-way port and the 2-way port of the A solenoid valve 311, the vacuum driving assembly 1, the 2-way port and the 3-way port of the C solenoid valve 321, and the working cabin form a series circuit, and the suction head is used for sucking the freeze tube under negative pressure, and the vacuum pressure switch 327 feeds back a negative pressure sucking signal.

[0050] Further, the A solenoid valve 311 and the C solenoid valve 321 are in an energized state, and the B solenoid valve 221 is in a de-energized state: the 2-way port and the 1-way port of the A solenoid valve 311 and the C solenoid valve 321 are connected, the pressure storage tank 21 is in a disconnected closed state, the suction head, the vacuum pressure switch 327, the vacuum filter 329, the 2-way port and the 1-way port of the C solenoid valve 321, the vacuum driving assembly 1, the 1-way port and the 2-way port of the A solenoid valve 311, and the working cabin form a series circuit, and the suction head is used for releasing the freeze tube under positive pressure.

[0051] In summary, the two pipelines of the vacuum system are connected to the suction head and the working cabin respectively, the opening and closing of the three groups of solenoid valves are controlled, the negative pressure vacuum suction tube of the vacuum suction head and the positive pressure vacuum release tube are realized respectively, and the gas is all from the working cabin connected by the other pipeline, so that the whole is closed, external gas is avoided to be introduced to damage the dry environment in the working cabin, and the sample or equipment component in the low-temperature storage area is avoided to be frosted / iced. Embodiment 2

[0052] Reference Figure 4 As a second embodiment of the utility model, based on the basis of embodiment 1, further include a kind of vacuum system operation method, including following method:

[0053] S1: vacuum driving assembly 1 is powered on, and system starts to operate;

[0054] S2: A solenoid valve 311, B solenoid valve 221, C solenoid valve 321 are all in de-energized state: the 2-way port and the 3-way port of A solenoid valve 311, B solenoid valve 221, C solenoid valve 321 are connected, and the pressure storage tank 21 is in disconnected closed state;At this time, the working cabin, the 3-way port and the 2-way port of C solenoid valve 321, vacuum driving assembly 1, the 2-way port and the 3-way port of A solenoid valve 311, pressure storage tank 21 form series connection, gas in pressure storage tank 21 is extracted into working cabin, and pressure storage tank 21 forms negative pressure, and the rest elements are not involved in gas circuit;

[0055] S3: A solenoid valve 311, C solenoid valve 321 power-off state, B solenoid valve 221 power-on state: A solenoid valve 311 and C solenoid valve 321 2-way port and 3-way port are connected, B solenoid valve 221 2-way port and 1-way port are connected, at this time, the suction head, the vacuum pressure switch 327, the vacuum filter 329, the 2-way port and the 1-way port of the B solenoid valve 221, the pressure tank 21, the 3-way and 2-way ports of the A solenoid valve 311, the vacuum drive assembly 1, the 2-way port and the 3-way port of the C solenoid valve 321, and the working cabin form a series circuit, and the suction head is used to suck the freeze tube under negative pressure, and the vacuum pressure switch 327 feeds back the negative pressure suction signal.

[0056] S4: A solenoid valve 311, C solenoid valve 321 power-on state, B solenoid valve 221 power-off state: A solenoid valve 311 and C solenoid valve 321 2-way port and 1-way port are connected, the pressure tank 21 is in a disconnected closed state, at this time, the suction head, the vacuum pressure switch 327, the vacuum filter 329, the 2-way port and the 1-way port of the C solenoid valve 321, the vacuum drive assembly 1, the 1-way and 2-way ports of the A solenoid valve 311, and the working cabin form a series circuit, and the suction head is used to release the freeze tube under positive pressure; at the same time, the pressure tank 21 is closed at both ends, and maintains a negative pressure state.

[0057] S5: The steps 3 and 4 are cycled, and the freeze tube is sucked and placed by the suction head under negative pressure and positive pressure.

[0058] S6: The tube picking task is completed, the three groups of solenoid valves and the vacuum drive assembly 1 are powered off, and the system ends operation.

[0059] In summary, the utility model discloses a vacuum system two pipelines are connected to the suction head and the working cabin respectively, the opening and closing of three groups of solenoid valves are controlled, the negative pressure vacuum pipe of the vacuum suction head and the positive pressure vacuum release pipe are realized respectively, and the gas is all from the working cabin connected by another pipeline, full sealing is realized, external gas is avoided to be introduced to destroy the dry environment in the working cabin, and the sample or equipment component in the low-temperature storage area is prevented from frosting / icing.

[0060] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, locations, and the like). For example, the elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be modified or changed. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the subject matter described herein. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functions and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.

[0061] Also, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the present inventive subject matter, or those unrelated to enabling the claimed application).

[0062] It should be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill in the art having the benefit of this disclosure.

[0063] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the technical solutions of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A vacuum system for a suction head, characterized by: The application relates to a vacuum-driven component (1), a pressure storage component (2) and a vacuum control component (3); the vacuum-driven component (1) is communicated with the vacuum control component (3), the pressure storage component (2) is communicated with the vacuum control component (3), and the vacuum control component (3) is respectively communicated with a suction head and a working cabin; the vacuum-driven component (1) can perform vacuum extraction on the pressure storage component (2) through the vacuum control component (3), the vacuum control component (3) cooperates with the pressure storage component (2) and the vacuum-driven component (1) to form positive pressure or negative pressure of the suction head, and the suction head is used for sucking or placing a sample tube.

2. The vacuum system for a suction head according to claim 1, characterized in that: The vacuum control component (3) comprises a first pipeline control element (31) and a second pipeline control element (32); the vacuum-driven component (1) is connected with the first pipeline control element (31) and the second pipeline control element (32); the first pipeline control element (31) and the second pipeline control element (32) are communicated; and the second pipeline control element (32) is connected with the pressure storage component (2).

3. The vacuum system for a suction head according to claim 2, characterized in that: The first pipeline control element (31) comprises an A electromagnetic valve (311), a first connecting pipe (312), a second connecting pipe (313) and a working cabin connecting pipe (314); the first connecting pipe (312) is communicated with the A electromagnetic valve (311) and the vacuum-driven component (1); and the second connecting pipe (313) is connected with the A electromagnetic valve (311) and the working cabin connecting pipe (314).

4. The vacuum system for a suction head according to claim 3, characterized in that: The second pipeline control element (32) comprises a C electromagnetic valve (321), a third connecting pipe (322) and a fourth connecting pipe (323); the third connecting pipe (322) is connected with the C electromagnetic valve (321) and the vacuum-driven component (1); and the fourth connecting pipe (323) is connected with the C electromagnetic valve (321) and the working cabin connecting pipe (314).

5. The vacuum system for a suction head according to claim 4, characterized in that: The second pipeline control element (32) further comprises a fifth pipeline (324), a sixth pipeline (326), a vacuum pressure switch (327) and a vacuum suction head pipeline (328); the fifth pipeline (324) is connected with the vacuum pressure switch (327) and the C electromagnetic valve (321); the sixth pipeline (326) is connected with the fifth pipeline (324) and the pressure storage component (2); and the vacuum pressure switch (327) is connected with the vacuum suction head pipeline (328).

6. The suction head vacuum system of claim 5, wherein: The vacuum suction head pipeline (328) is connected with a vacuum filter (329) on one side; and the vacuum filter (329) is arranged on the side of the vacuum pressure switch (327).

7. The suction head vacuum system of claim 6, wherein: The pressure storage component (2) comprises a pressure storage tank (21) and a third pipeline control element (22); the third pipeline control element (22) is connected with the pressure storage tank (21) and the second pipeline control element (32).

8. The suction head vacuum system of claim 7, wherein: The third pipeline control element (22) comprises a B electromagnetic valve (221), a seventh pipeline (222) and an eighth pipeline (223); the seventh pipeline (222) is connected with the B electromagnetic valve (221) and one end of the pressure storage tank (21); and the eighth pipeline (223) is connected with the pressure storage tank (21) and the other end of the B electromagnetic valve (221).

9. The suction head vacuum system of claim 8, wherein: The pressure tank (21) can form a series loop with the A electromagnetic valve (311), the vacuum drive assembly (1), the C electromagnetic valve (321) and the working cabin, and the pressure tank (21) can form negative pressure.

10. The suction head vacuum system of claim 9, wherein: The vacuum drive assembly (1) can form a series negative pressure loop with the A electromagnetic valve (311), the B electromagnetic valve (221), the C electromagnetic valve (321), the pressure tank (21), the vacuum filter (329), the vacuum pressure switch (327), the suction head and the working cabin, and the suction head can suck the sample tube under negative pressure.

11. The suction head vacuum system of claim 9, wherein: The vacuum drive assembly (1) can form a series positive pressure loop with the A electromagnetic valve (311), the C electromagnetic valve (321), the vacuum pressure switch (327), the vacuum filter (329), the suction head and the working cabin, and the suction head can place the sample tube under positive pressure.

12. A suction head vacuum system as claimed in claim 10 or 11, characterized in that: The A electromagnetic valve (311), the B electromagnetic valve (221) and the C electromagnetic valve (321) are in a power-off state, the 2-way port and the 3-way port of the A electromagnetic valve (311), the B electromagnetic valve (221) and the C electromagnetic valve (321) are connected, the pressure tank (21) is in a closed state, the working cabin, the 3-way 2-way port of the C electromagnetic valve (321), the vacuum drive assembly (1), the 2-way 3-way port of the A electromagnetic valve (311) and the pressure tank (21) form a series connection, the gas in the pressure tank (21) is extracted into the working cabin, and the pressure tank (21) forms negative pressure.

13. The suction head vacuum system of claim 12, wherein: The A electromagnetic valve (311) and the C electromagnetic valve (321) are in a power-off state, and the B electromagnetic valve (221) is in a power-on state, the 2-way port and the 3-way port of the A electromagnetic valve (311) and the C electromagnetic valve (321) are connected, the 2-way port and the 1-way port of the B electromagnetic valve (221) are connected, the suction head, the vacuum pressure switch (327), the vacuum filter (329), the 2-way port and the 1-way port of the B electromagnetic valve (221), the pressure tank (21), the 3-way and 2-way port of the A electromagnetic valve (311), the vacuum drive assembly (1), the 2-way port and the 3-way port of the C electromagnetic valve (321) and the working cabin form a series loop, the suction head sucks the frozen tube under negative pressure, and the vacuum pressure switch (327) feeds back a negative pressure suction signal.

14. The suction head vacuum system of claim 12, wherein: The A electromagnetic valve (311) and the C electromagnetic valve (321) are in a power-on state, and the B electromagnetic valve (221) is in a power-off state, the 2-way port and the 1-way port of the A electromagnetic valve (311) and the C electromagnetic valve (321) are connected, the pressure tank (21) is in a closed state, the suction head, the vacuum pressure switch (327), the vacuum filter (329), the 2-way port and the 1-way port of the C electromagnetic valve (321), the vacuum drive assembly (1), the 1-way and 2-way port of the A electromagnetic valve (311) and the working cabin form a series loop, and the suction head releases the frozen tube under positive pressure.

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