A pinch valve assembly

Abstract

The application provides a clamp valve group, which comprises a clamping unit and a driving unit. The clamping unit comprises a clamping base and a clamping assembly. The driving unit comprises a first driving member and a second driving member. A fluid pipeline can be arranged between two adjacent clamping members. When the driving unit moves to the side of the first driving member in a second direction, the second driving member moves along a second upward sliding surface of the first clamping member. Then, the driving unit moves to the side of the second driving member, the first driving member slides along a first upward sliding surface of the second clamping member and pushes the second clamping member to move in an upward direction, so that the second clamping member is clamped with a first clamping member adjacent to the upward direction to cut off the fluid pipeline between the two clamping members, and the second clamping member is separated from a third clamping member adjacent to a downward direction to open the fluid pipeline between the two clamping members. According to the technical scheme, the cost can be reduced and the flexibility of control can be increased.

Description

Technical Field

[0001] The present application relates to a pinch valve assembly that can reduce costs and is easy to control. Background Art

[0002] In fields with requirements for fluid pipeline integrity such as medical and health care, food, and chemical industries, it is necessary to control the liquid circuits in automated processes, and control the on-off of different pipelines according to time sequences.

[0003] In automated equipment for conveying multiple liquids through multiple passages, the liquid circuits are usually designed such that each liquid is conveyed by a separate pump, or multiple liquids are controlled for conveying switching through a "crow"-shaped liquid circuit formed by a plurality of 2-position 3-way valves, or an on-off valve assembly (also called a bank of valves) is used to control the switching of multi-liquid conveying.

[0004] The common disadvantage of the above-mentioned various solutions is that the material cost of the pumps, valves and electric control system is high, the control is complicated, and the cooperative operation of a plurality of control components leads to poor system reliability. For designs under non-high-precision requirements, there is a need for a pinch valve assembly that can further reduce costs and improve flexibility and reliability.

[0005] Therefore, in the prior art, there exists a technical problem of how to reduce the cost and simplify the control of the pinch valve assembly. Summary of the Invention

[0006] The purpose of this application is to provide a pinch valve assembly that can reduce costs and is easy to control. To achieve the above objective, one solution of this application is a pinch valve assembly comprising a clamping unit and a driving unit. The pinch valve assembly is used to control the opening and closing of multiple fluid pipelines. The clamping unit includes a clamping base and a clamping assembly having a first clamping member, a second clamping member, and a third clamping member. Each clamping member in the clamping assembly is sequentially arranged on the clamping base and is movable along a first direction. Each clamping member has a first upward sliding surface and a second upward sliding surface at both ends, inclined towards the same side. The driving unit includes a first driving member and a second driving member. The first driving member and the second driving member are capable of synchronously reciprocating along a second direction intersecting the first direction. The projections of the first driving member and the second driving member in the first direction and in the second direction are respectively spaced apart. The driving unit and the clamping unit are arranged along a third direction, and the first driving member and the second driving member extend along the third direction... The third direction is perpendicular to the first direction and the second direction; a fluid conduit can be provided between two adjacent clamping members in the clamping assembly; in the initial state, the first driving member is closer to the downward direction of the clamping assembly relative to the second driving member; when the driving unit moves laterally toward the first driving member along the second direction, the second driving member can move relative to the second upward sliding surface of the first clamping member; then, the driving unit moves laterally toward the second driving member along the second direction, the first driving member can move relative to the first upward sliding surface of the second clamping member, and push the second clamping member to move upward along the first direction, so that the second clamping member clamps the first clamping member adjacent in the upward direction and disconnects the fluid conduit between them, so that the second clamping member separates from the third clamping member adjacent in the downward direction and connects the fluid conduit between them.

[0007] According to the aforementioned technical solution, by moving the drive unit up and down, a specific clamping member is pushed to move in the upward direction, thereby separating or clamping two adjacent clamping members, realizing the connection or disconnection of the fluid pipeline between them. Compared with the solution of setting multiple control valves, the structure is simple, the cost is low and the control is convenient.

[0008] In a preferred embodiment, when the second drive member moves relative to the second upward sliding surface of the first clamping member, it pushes the first clamping member to move upward along the first direction, and the second clamping member also moves in the same direction as the first clamping member; the third clamping member also moves in the same direction as the second clamping member and clamps the fluid pipeline between the two clamping members.

[0009] According to the aforementioned technical solution, when the second driving member pushes the first clamping member to move in the upward direction, the adjacent second and third clamping members in the downward direction will move in the same direction to a position opposite to the first driving member, so that when the first driving member falls back, it can touch the first upward sliding surface of the second and third clamping members.

[0010] In a preferred embodiment, the projected distance between the two ends of each clamping member in the clamping assembly in the second direction is not greater than the interval between the projections of the first driving member and the second driving member in that direction.

[0011] According to the aforementioned technical solution, the clamping member can ensure convenient up-and-down movement of the first and second driving members within the gap between the first and second driving members.

[0012] In a preferred embodiment, the angle between the direction determined by the first drive member and the second drive member and the second direction relative to the second direction is adjustable.

[0013] According to the aforementioned technical solution, the adjustable tilt angle can further increase the flexibility of control. When the angle is small, each up-and-down movement can push one clamping component. When the angle is large, each up-and-down movement can cross multiple clamping components. When tilting in the opposite direction, the clamping component that has already moved up can be moved down and reset by moving up and down.

[0014] In a preferred embodiment, at least a portion of the clamping members in the clamping assembly further includes a first downward sliding surface and a second downward sliding surface, respectively, inclined to the same side. The tilt angle of the direction determined by the first driving member and the second driving member relative to the second direction is adjusted so that the first driving member is closer to the upward direction of the clamping assembly relative to the second driving member. Furthermore, when the driving unit moves to the side of the second driving member, the first driving member can slide along the first downward sliding surface of a single clamping member and push it to move in the downward direction, so that it clamps with the clamping member adjacent in the downward direction and disconnects the fluid passage between them, and separates from the clamping member adjacent in the upward direction and connects the fluid passage between them.

[0015] According to the aforementioned technical solution, the clamping component that has already moved upwards can be moved downwards and reset by moving it up and down.

[0016] In a preferred embodiment, the clamping member located at the far end in the downward direction of the clamping assembly is designated as the last clamping member; the last clamping member further comprises a groove connected to its second upward sliding surface, the opening of which is oriented towards the third direction; when the second driving member moves along the second upward sliding surface of the last clamping member toward the side of the first driving member, the second driving member can slide along the groove to the side of the last clamping member facing the third direction, thereby disengaging the first driving member, the second driving member, and the clamping assembly; subsequently, the clamping assembly can be retracted in the downward direction.

[0017] According to the aforementioned technical solution, when the second driving member slides out of the slide, the first driving member and the second driving member disengage from the plane where the clamping assembly is located, and no longer interfere with the movement of the clamping assembly in the first direction, thereby allowing the clamping assembly to be reset to its initial state.

[0018] In a preferred embodiment, the clamping base is connected to a first elastic element having a predetermined allowable deformation in the first direction; during the upward movement of the clamping assembly, the clamping base moves synchronously with the clamping assembly, and the first elastic element undergoes elastic deformation; after the second driving member slides out of the groove, the first elastic element rebounds and drives the clamping assembly to retract in the downward direction via the clamping base.

[0019] According to the aforementioned technical solution, the first elastic element can drive the clamping component to automatically retract and reset.

[0020] In a preferred embodiment, the clamping member located at the first end in the upward direction of the clamping assembly is designated as the first clamping member; a second elastic member with a predetermined allowable deformation in the first direction is connected between the upward side of the first clamping member and the clamping base; during the upward movement of the clamping assembly, the second elastic member is compressed; after the second drive member slides out of the groove, the second elastic member rebounds and pushes the clamping assembly backward in the downward direction via the first clamping member.

[0021] According to the aforementioned technical solution, the second elastic element can drive the clamping component to automatically retract and reset.

[0022] In a preferred embodiment, each clamping member in the clamping assembly has a groove on its upward and / or downward side that allows fluid lines to pass through.

[0023] According to the aforementioned technical solution, it is convenient to set up fluid pipelines between the clamping components.

[0024] According to the aforementioned technical solution, a drive rod is fixedly connected between the first drive member and the second drive member; a third elastic member with a predetermined allowable deformation in the third direction is connected between the drive rod and the clamping base; when the second drive member slides out along the groove to the side of the last clamping member facing the third direction, the third elastic member undergoes elastic deformation; after the clamping assembly retracts in the downward direction, the third elastic member rebounds and drives the first drive member and the second drive member to reset in the third direction via the drive rod.

[0025] According to the aforementioned technical solution, the third elastic element can drive the drive unit to automatically reset. Attached Figure Description

[0026] To more clearly illustrate this application, the accompanying drawings will be described and explained below. Obviously, the drawings described below only illustrate certain aspects of some exemplary embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] Figure 1 This is a front view of the pinch valve assembly.

[0028] Figure 2 This is a rear oblique view of the pinch valve assembly.

[0029] Figure 3 This is a schematic diagram of the clamping component structure.

[0030] Figure 4 This is an assembly diagram of the clamping components and the clamping base.

[0031] Figure 5(1) is a schematic diagram of the initial state of the second driving component tilting upward.

[0032] Figure 5(2) is a schematic diagram of the final state of the second driving component tilting upward.

[0033] Figure 5(3) is a schematic diagram of the initial state of the first driving component tilting downward.

[0034] Figure 5(4) is a schematic diagram of the final state of the first driving member tilting downward.

[0035] Figure 6 This is a schematic diagram of the automatic reset principle of the clamping component.

[0036] Figure 7(1) is a schematic diagram of the dimensions of the drive unit.

[0037] Figure 7(2) is a schematic diagram of the dimensions of the first clamping component.

[0038] Figure 8This is a schematic diagram of the hydraulic circuit control principle of traditional technology.

[0039] Figure 9 This is a schematic diagram of the liquid circuit control principle of this application.

[0040] Attached image caption:

[0041] 1 clamping unit

[0042] 10 clamping bases

[0043] 101 base right end

[0044] 102 base left end

[0045] 103 Base Rear Wall

[0046] 1031 rear wall track

[0047] 104 Foundation Front Wall

[0048] 11 First clamping component

[0049] 111 No. 1 First Ascending Glide Surface

[0050] 112 No. 1 Second Ascending Slide

[0051] 113 No. 1 First Downward Sliding Surface

[0052] 114 No. 1 Second Downward Sliding Surface

[0053] 115 No. 1 Groove

[0054] 12 Second clamping component

[0055] 121 No. 2 First Upward Sliding Surface

[0056] 122 No. 2 Second Upward Sliding Surface

[0057] 123 No. 2 First Downward Sliding Surface

[0058] 124 No. 2 Second Downward Sliding Surface

[0059] 13 Third clamping component

[0060] 131 No. 3 First Ascending Slide

[0061] 132 No. 3 Second Ascending Slide

[0062] 133 No. 3 First Downward Sliding Surface

[0063] 134 No. 3 Second Downward Sliding Surface

[0064] 14 Fourth clamping component

[0065] 141 No. 4 First Ascending Glide Surface

[0066] 142 No. 4 Second Ascending Slide

[0067] 143 No. 4 First Downward Sliding Surface

[0068] 144 No. 4 Second Downward Sliding Surface

[0069] 15 Fifth clamping component

[0070] 150 groove

[0071] 151 No. 5 First Ascending Glide Surface

[0072] 152 No. 5 Second Ascending Slide

[0073] 155 No. 5 Groove

[0074] 156 Fifth clamping protrusion

[0075] 2 drive units

[0076] 20 Valve Body

[0077] 201 Valve Body Rail

[0078] 21 First driving component

[0079] 22 Second drive unit

[0080] 23 drive levers

[0081] 24 driver card connector

[0082] 31 First elastic element

[0083] 33 Third elastic element

[0084] 40 pumps

[0085] 41 First Container

[0086] 42 Second Container

[0087] 43 reaction tank

[0088] 44 relay containers

[0089] 45 Third Container

[0090] 46 First three-way valve

[0091] 47 Second Three-Way Valve

[0092] 48 On / Off Valve

[0093] 51 pipeline

[0094] 52 pipeline

[0095] 53 pipeline

[0096] 54 pipes

[0097] 61 pipeline

[0098] 611 piping

[0099] 62 pipeline

[0100] 622 pipeline

[0101] 63 pipeline

[0102] 64 pipeline

[0103] 65 pipe Detailed Implementation

[0104] Various exemplary embodiments of this application are described in detail below with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the application or its application or use. This application can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be noted that, unless otherwise stated, the relative arrangement of components and steps, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0105] As used in this application, the words “including” or “comprising” or similar terms mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility that it may also cover other elements.

[0106] All terms used in this application (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as being interpreted with idealized or highly formalized meanings, unless explicitly defined herein.

[0107] For components, specific model numbers and other parameters of components not described in detail in this section, the interrelationships between components and control circuits, these may be considered as techniques, methods and devices known to those skilled in the art, but where appropriate, such techniques, methods and devices should be considered part of the specification.

[0108] Overall Structure

[0109] The following is for reference Figure 1 and Figure 2 This application describes the overall structure of the pinch valve assembly. Figure 1 This is a front view of the pinch valve assembly. Figure 2 This is a rear oblique view of the pinch valve assembly.

[0110] See Figure 1 The clamp valve assembly of this application includes a clamping unit 1 and a driving unit 2, used to control the on / off state of multiple fluid pipelines. The clamping unit 1 includes a clamping base 10 and a clamping assembly. The clamping assembly includes at least three clamping members, each of which is arranged sequentially on the clamping base 10 and is movable along a first direction. For simplicity, this description will only take the clamping assembly including the first clamping member 11, the second clamping member 12, the third clamping member 13, the fourth clamping member 14, and the fifth clamping member 15 shown in the figure as an example.

[0111] The drive unit 2 includes a first drive member 21 and a second drive member 22. The first drive member 21 and the second drive member 22 are capable of synchronously reciprocating along a second direction that intersects the first direction, and the projections of the first drive member 21 and the second drive member 22 in the first direction and in the second direction are respectively spaced apart.

[0112] For ease of explanation, this application uses the X-axis direction shown in the figure as the first direction, the Y-axis direction perpendicular to the X-axis direction as the second direction, and the Z-axis direction perpendicular to the XY plane as the third direction. In fact, the second direction and the third direction are not limited to these. The second direction can also be a direction in the XY plane that is inclined at a specified angle to the Y-axis, and the third direction can also be a direction that is inclined at a specified angle to the Z-axis direction. No specific limitation is made here.

[0113] In the first direction, the direction from the fifth clamping member 15 towards the first clamping member 11, as shown in the diagram, is the upward direction (left side), and vice versa is the downward direction (right side). In the second direction, the first driving member 21 is located on the upper side of the clamping base 10, and the second driving member 22 is located on the lower side of the clamping base 10, as shown in the diagram. Figure 1 The side shown is the front of the entire pinch valve assembly. Figure 2 The side shown is the rear side of the entire pinch valve assembly.

[0114] The first drive member 21 and the second drive member 22 are arranged at intervals in the projection of the second direction so as to be separated by a certain distance in the second direction in order to accommodate the clamping assembly.

[0115] The first driving member 21 and the second driving member 22 are arranged at intervals in the projection of the first direction, that is, the direction determined by these two driving members is inclined at an angle with respect to the Y-axis. The direction determined by these two driving members is the extension direction of the driving rod 23 described later. In other words, as a preferred embodiment, the first driving member 21 and the second driving member 22 are arranged at intervals in directions that intersect both the first and second directions, that is, the extension direction of the driving rod 23 described later is inclined with respect to both the first and second directions.

[0116] It should be noted that when the second direction is consistent with the Y-axis direction, the direction determined by the first driving member 21 and the second driving member 22, i.e. the extension direction of the driving rod 23 described later, needs to be tilted at a certain angle with the second direction so that the projections of the first driving member 21 and the second driving member 22 in the first direction maintain a certain interval.

[0117] When the second direction is not consistent with the Y-axis direction and is tilted at an angle relative to the Y-axis in the XY plane, the direction determined by the first driving member 21 and the second driving member 22, i.e. the extension direction of the driving rod 23 described later, can be tilted at a certain angle with the second direction or coincide with the second direction, so that the projections of the first driving member 21 and the second driving member 22 in the first direction maintain a certain interval.

[0118] Both embodiments aim to maintain a certain interval between the projections of the first driving member 21 and the second driving member 22 in the first direction, so that when these two driving members move up and down, they respectively push different clamping members to move along the first direction. For simplicity, this explanation will only take the example where the second direction is consistent with the Y-axis direction.

[0119] The driving unit 2 and the clamping unit 1 are arranged along a third direction. For example, the driving unit 2 is located behind the clamping unit 1, and the first driving member 21 and the second driving member 22 extend forward along a third direction. A fluid conduit is provided between two adjacent clamping members in the clamping assembly. One fluid conduit or multiple fluid conduits can be provided between two adjacent clamping members, which is not specifically limited here.

[0120] During use, the drive unit 2 controls specific clamping parts in the clamping assembly to move in the upward / downward direction, so that they close or separate from adjacent clamping parts, thereby disconnecting / connecting the fluid pipeline between the two clamping parts, thus precisely controlling the flow direction and flow rate of the fluid.

[0121] Clamping unit

[0122] Next, combined Figure 3 , Figure 4 The clamping unit 1 will be described in detail. Figure 3 This is a schematic diagram of the clamping component structure. Figure 4 This is an assembly diagram of the clamping assembly and the clamping base 10.

[0123] See Figure 3 Each clamping component in the clamping assembly has a first upward sliding surface and a second upward sliding surface at its upper and lower ends, respectively, which are inclined to the same side. The first upward sliding surface and the second upward sliding surface can be inclined surfaces, or inclined curved surfaces or arc surfaces. For simplicity, only the inclined surface is used as an example for explanation here.

[0124] As an example, the first clamping member 11 has a first upward sliding surface 111 and a second upward sliding surface 112 inclined to the right; the second clamping member 12 has a second first upward sliding surface 121 and a second second upward sliding surface 122 inclined to the right; the third clamping member 13 has a third first upward sliding surface 131 and a third second upward sliding surface 132 inclined to the right; the fourth clamping member 14 has a fourth first upward sliding surface 141 and a fourth second upward sliding surface 142 inclined to the right; and the fifth clamping member 15 has a fifth first upward sliding surface 151 and a fifth second upward sliding surface 152 inclined to the right.

[0125] Among them, the first upward sliding surface 111, the second upward sliding surface 121, the third upward sliding surface 131, the fourth upward sliding surface 141, and the fifth upward sliding surface 151 are located on the upper side of the clamping base 10, and the second upward sliding surface 112, the second upward sliding surface 122, the third upward sliding surface 132, the fourth upward sliding surface 142, and the fifth upward sliding surface 152 are located on the lower side of the clamping base 10.

[0126] Preferably, each clamping member is further provided with a groove on the left and / or right side, such as the first groove 115 of the first clamping member 11 and the fifth groove 155 of the fifth clamping member 15, as shown in the figure, so as to accommodate the fluid pipeline, which is arranged to pass through the groove of each clamping member in a third direction.

[0127] See Figure 4 The clamping base 10 has a right end 101 in the downward direction and a left end 102 in the upward direction. Fluid lines can also be provided between the first clamping member 11 and the left end 102, and between the fifth clamping member 15 and the right end 101. The clamping / separation between the clamping members and the clamping base 10 opens / connects the corresponding fluid lines.

[0128] The clamping base 10 further includes a base front wall 104 and a base rear wall 103 extending along a first direction. A sliding rail extending along the first direction is provided on the base front wall 104 and / or the base rear wall 103. Each clamping member in the clamping assembly has a clamping protrusion extending in a third direction and mating with the sliding rail. For example, as shown in the figure, the fifth clamping member 15 has a fifth clamping protrusion 156 extending rearward. The fifth clamping protrusion 156 engages with the rear wall rail 1031 and can slide left and right along the rear wall rail 1031. The connection methods of other clamping members and the clamping base 10 are the same, and will not be described in detail here. The connection methods between the clamping assembly and the clamping base 10 are not limited to this; this is only one example for illustration.

[0129] drive unit

[0130] Next, combined Figure 1 , Figure 2 The driving unit 2 will be described in detail.

[0131] See Figure 1 , Figure 2 As mentioned above, the first drive member 21 and the second drive member 22 can reciprocate synchronously along the second direction. Furthermore, when the second direction is consistent with the Y-axis direction, the direction determined by the first drive member 21 and the second drive member 22 is inclined to intersect with the second direction, that is, there is a certain angle between the extension direction of the drive rod 23 (described later) and its movement direction.

[0132] The first driving member 21 and the second driving member 22 extend along a third direction toward the side closer to the clamping assembly. In the initial state, they extend to the upper and lower sides of the clamping base 10, respectively, that is, both the first driving member 21 and the second driving member 22 are located in the XY plane, and the first driving member 21 is positioned closer to the downward direction, that is, more to the right, than the second driving member 22.

[0133] Preferably, the projection distance between the upper and lower ends of each clamping member in the clamping assembly in the second direction is not greater than the interval distance between the first driving member 21 and the second driving member 22 in that direction.

[0134] As an example, the drive unit 2 includes a fixedly mounted valve body 20, which has a valve body track 201 extending along a second direction. A drive rod 23 is connected between the first drive member 21 and the second drive member 22. The drive rod 23 is connected to the valve body track 201 via a drive latch 24. The drive mechanism controls the drive rod 23 to reciprocate along the valve body track 201 via the drive latch 24, thereby controlling the first drive member 21 and the second drive member 22 to move along the second direction. At this time, the drive rod 23 is inclined at a predetermined angle to the second direction.

[0135] It is understood that the first driving component 21 and the second driving component 22 can also achieve synchronous movement in other ways. For example, the first driving component 21 and the second driving component 22 can be connected to the electromagnetic module respectively, and synchronous reciprocating movement in the second direction can be achieved through electromagnetic control. The above-mentioned scheme of the driving rod 23 is only described as an example.

[0136] Driving principle

[0137] Next, combined Figures 5(1)-5(4) The principle process of driving the clamping component to move by the driving unit 2 is explained in detail. Figure 5(1) is a schematic diagram of the initial state of the second driving member 22 tilting upward, Figure 5(2) is a schematic diagram of the final state of the second driving member 22 tilting upward, Figure 5(3) is a schematic diagram of the initial state of the first driving member 21 tilting downward, and Figure 5(4) is a schematic diagram of the final state of the first driving member 21 tilting downward.

[0138] For example, as shown in FIG5(1), when the drive unit 2 moves to the side of the first drive member 21 along the second direction, i.e., the upper side, the second drive member 22 begins to move obliquely upward along the third second upward sliding surface 132 of the third clamping member 13 until the second drive member 22 reaches the position shown in FIG5(2), i.e., moves relative along the third second upward sliding surface 132 until it is located between the third clamping member 13 and the fourth clamping member 14. At this time, the third clamping member 13 and the fourth clamping member 14 are separated, and the fluid pipeline between them is connected.

[0139] During this process, the second drive member 22 pushes the third clamping member 13 to move upward, i.e. to the left. As a preferred embodiment, the fourth clamping member 14, which is adjacent to the third clamping member 13, also moves in the same direction as the third clamping member 13; the fifth clamping member 15 also moves in the same direction as the fourth clamping member 14 and clamps the fluid pipeline between them.

[0140] Then, as shown in Figure 5(3), the drive unit 2 moves to the side, i.e. the lower side, of the second drive member 22. The first drive member 21 moves obliquely downward along the fourth first upward sliding surface 141 of the fourth clamping member 14, which is adjacent to the downward direction of the third clamping member 13, and pushes the fourth clamping member 14 to move upward, i.e. to the left, until the first drive member 21 reaches the position shown in Figure 5(4), i.e., moves along the fourth first upward sliding surface 141 to the space between the fourth clamping member 14 and the fifth clamping member 15, so that the two clamping members are separated and the fluid pipeline between them is connected. The fourth clamping member 14 and the third clamping member 13 change from separation to clamping, and the fluid pipeline between them is disconnected.

[0141] As the drive unit 2 continues to move upward, the above process is repeated, that is, the second drive member 22 moves obliquely upward along the fourth second upward sliding surface 142 of the fourth clamping member 14, while the fourth clamping member 14 and the fifth clamping member 15 remain separated, thus opening the fluid passage between them. Then, as the drive unit 2 moves downward, the first drive member 21 falls back and moves obliquely downward along the fifth first upward sliding surface 151 of the fifth clamping member 15, pushing the fifth clamping member 15 to the left and clamping it with the fourth clamping member 14, thus disconnecting the fluid passage between them, while simultaneously opening the fluid passage between the right side of the fifth clamping member 15 and the clamping base 10.

[0142] In the initial state, the second driving member 22 is located at the position corresponding to the first clamping member 11. In one embodiment, the second driving member 22 is located to the right of the first clamping member 11. When the driving unit 2 moves upward, the second driving member 22 slides obliquely upward along the first second upward sliding surface 112 of the first clamping member 11, pushing the first clamping member 11 to the left. If a fluid passage is provided between the first clamping member 11 and the left end 102 of the base, it is disconnected, and the first clamping member 11 and the second clamping member 12 are separated, thus opening the fluid passage between them. Subsequently, as the driving unit 2 moves downward, the first driving member 21 falls back and moves obliquely downward along the second first upward sliding surface 121 of the second clamping member 12, pushing the second clamping member 12 to the left and clamping it with the first clamping member 11, thus disconnecting the fluid passage between them. At the same time, the second clamping member 12 is separated from the third clamping member 13, thus opening the fluid passage between them.

[0143] In another embodiment, the second driving member 22 is located to the left of the first clamping member 11. When the driving unit 2 moves upward, it does not push the first clamping member 11. However, when the driving unit 2 moves downward, the first driving member 21 falls back and moves obliquely downward along the first upward sliding surface 111 of the first clamping member 11, pushing the first clamping member 11 to the left and clamping it with the left end 102 of the base. If there is a fluid pipeline between the two, it is disconnected. At the same time, the first clamping member 11 and the second clamping member 12 are separated, so that the fluid pipeline between the two is connected.

[0144] It is understood that the clamping assembly may contain three, four or more clamping elements, not limited to the five shown in the figure, but the principle of controlling the disconnection / connection of the fluid line between two adjacent clamping elements is the same as described above, and will not be repeated here.

[0145] Next, different embodiments will be described.

[0146] In the first embodiment, the clamping base 10 is capable of moving left and right in a first direction. The distance between the right end 101 and the left end 102 of the base is fixed, and it can accommodate the entire clamping assembly, the clamped fluid pipeline, and either the first drive member 21 or the second drive member 22. When the drive unit 2 pushes each clamping member in the clamping assembly to move left one by one, the clamping assembly also drives the clamping base 10 to move left. For example, when the drive unit 2 pushes the second clamping member 12 to move left, the second clamping member 12 clamps with the first clamping member 11, and pushes the clamping base 10 to move left synchronously via the first clamping member 11. The clamping base 10 then pushes the fifth clamping member 15 via the right end 101 of the base, and then pushes the third clamping member 13 to move to the position corresponding to the first drive member 21. This ensures that when the drive unit 2 moves down, the first drive member 21 can fall back onto the third first upward sliding surface 131 of the third clamping member 13. That is, when the drive unit 2 pushes the left clamping member to move, it simultaneously pushes the right clamping member to move to the left via the clamping base 10, and so on in a cycle.

[0147] In the second embodiment, by adjusting the angle between the extension direction of the drive rod 23 and the second direction, the first drive member 21 can actuate more than one clamping member within the up-and-down reciprocating stroke of the drive unit 2. For example, by increasing the angle of the drive rod 23, when the drive unit 2 moves upward, the second drive member 22 slides obliquely upward along the first second upward sliding surface 112 of the first clamping member 11. Then, as the drive unit 2 moves downward, the first drive member 21 falls back, but crosses the second clamping member 12 and moves obliquely downward directly along the third first upward sliding surface 131 of the third clamping member 13, separating the third clamping member 13 from the fourth clamping member 14 and thus connecting the fluid pipeline between them. Of course, further increasing the angle of the drive rod 23 can allow the first drive member 21 to directly cross more clamping members within the up-and-down reciprocating stroke, thereby increasing the flexibility and convenience of fluid pipeline control.

[0148] In other words, as a preferred embodiment, the tilt angle between the extension direction of the drive rod 23 and the second direction is adjustable. This tilt angle can be adjusted to a preset angle before operation, but more preferably, it can be dynamically adjusted in real time during operation according to the actual needs of the piping system. This dynamically adjusts the separation between specific clamping components and adjacent clamping components, thereby providing more flexible control over the flow of fluid between the clamping components. Correspondingly, the strokes of the first drive component 21 and the second drive component 22 are also adjustable to ensure that each drive component moves into position at different tilt angles. This can be easily achieved using an electronic control system.

[0149] It is understood that when the angle between the extension direction of the drive rod 23 and the second direction is adjustable in real time, the clamping base 10 can be fixed, for example, fixedly connected to the valve body 20. After the drive unit 2 pushes the left clamping member to move to the left, as the drive unit 2 moves upward, the angle between the extension direction of the drive rod 23 and the second direction is increased in real time, so that when the first drive member 21 falls back, it can fall onto the first upward sliding surface of the specific clamping member on the right.

[0150] In the third embodiment, when the angle between the extension direction of the drive rod 23 and the second direction is a preset fixed value, the clamping base 10 can also be fixed, for example, fixedly connected to the valve body 20. A compressed spring can be provided on the right side of the clamping assembly. As the left clamping member moves to the left, the spring pushes the remaining clamping member on the right side to gradually move to the left to the position corresponding to the first drive member 21, ensuring that when the first drive member 21 falls back, it can land on the first upward sliding surface of the specific clamping member on the right side. Alternatively, a flexible wire can be connected between adjacent clamping members, for example, between the fourth clamping member 14 and the fifth clamping member 15. When the fourth clamping member 14 moves to the left, the fifth clamping member 15 is pulled to move to the left simultaneously to the position corresponding to the first drive member 21. The specific implementation methods are not limited to these, and will not be described in detail here.

[0151] Downward sliding surface

[0152] Next, combined Figure 3 A detailed explanation of the downward sliding surface is provided.

[0153] As mentioned above, the tilt angle between the line connecting the first drive member 21 and the second drive member 22 and the second direction is preferably adjustable. In adjusting this tilt angle, one embodiment is that when the first drive member 21 is tilted to the right relative to the second drive member 22, the tilt angle is adjustable; multiple angles can be pre-adjusted before use, or it can be dynamically adjusted in real time during use. Another embodiment is that the first drive member 21 can be adjusted to a position tilted to the left relative to the second drive member 22, i.e., the projection of the first drive member 21 in the first direction is located to the left of the projection of the second drive member 22 in the first direction.

[0154] These two implementation methods are preferably implemented simultaneously, but they can also be implemented separately. For example, when the first driving member 21 is tilted to the right relative to the second driving member 22, the tilt angle is a preset fixed value. However, the first driving member 21 can still be adjusted to a position tilted to the left relative to the second driving member 22. This is also an implementation method where the tilt angle is adjustable.

[0155] When the first driving member 21 is adjusted to a position that is tilted to the left relative to the second driving member 22, the angle of inclination between the line connecting the first driving member 21 and the second driving member 22 and the second direction can be a preset fixed value. However, preferably, the angle of inclination is still adjustable. It can be that multiple angles can be pre-adjusted before use, or it can be dynamically adjusted in real time during use. No specific limitation is made here.

[0156] Accordingly, such as Figure 3 As shown, at least a portion of the clamping components of the clamping assembly also includes a first downward sliding surface and a second downward sliding surface that are inclined to the left in the upward direction. The first downward sliding surface and the second downward sliding surface can be inclined surfaces, or inclined curved surfaces or arc surfaces. For simplicity, only an inclined surface will be used as an example here.

[0157] As an example, as shown in the figure, the first clamping member 11 has a first downward sliding surface 113 and a second downward sliding surface 114 inclined to the left; the second clamping member 12 has a second first downward sliding surface 123 and a second second downward sliding surface 124 inclined to the left; the third clamping member 13 has a third first downward sliding surface 133 and a third second downward sliding surface 134 inclined to the left; and the fourth clamping member 14 has a fourth first downward sliding surface 143 and a fourth second downward sliding surface 144 inclined to the left. The fifth clamping member 15 is located at the very end in the downward direction and may or may not have a downward sliding surface; this is not limited here.

[0158] The first descending sliding surface 113, the second descending sliding surface 123, the third descending sliding surface 133, and the fourth descending sliding surface 143 are located on the upper side of the clamping base 10, and are respectively arranged opposite to the first ascending sliding surface 111, the second ascending sliding surface 121, the third ascending sliding surface 131, and the fourth ascending sliding surface 141. The second descending sliding surface 114, the second descending sliding surface 124, the third descending sliding surface 134, and the fourth descending sliding surface 144 are located on the lower side of the clamping base 10, and are respectively arranged opposite to the second ascending sliding surface 112, the second ascending sliding surface 122, the third ascending sliding surface 132, and the fourth ascending sliding surface 142.

[0159] Thus, when one of the clamping components moves in the upward direction, for example, when the third clamping component 13 is moved to the left, the first driving component 21 is located between the third clamping component 13 and the fourth clamping component 14.

[0160] Subsequently, in one embodiment, the second driving member 22 is adjusted to an inclined position relative to the right side of the first driving member 21, and then the driving unit 2 is controlled to move upward. The second driving member 22 can move obliquely upward along the fourth second downward sliding surface 144 of the fourth clamping member 14 to between the third clamping member 13 and the fourth clamping member 14. Then, as the driving unit 2 moves downward, when the first driving member 21 falls back, it can fall onto the third first downward sliding surface 133 of the third clamping member 13 and push the third clamping member 13 to retract to the right.

[0161] Another implementation involves first controlling the drive unit 2 to move upward, causing the second drive member 22 to move upward at an angle along the third second upward sliding surface 132 of the third clamping member 13 to the space between the third clamping member 13 and the fourth clamping member 14. Then, the first drive member 21 is adjusted to an inclined position relative to the left of the second drive member 22. Afterward, as the drive unit 2 moves downward, the first drive member 21 falls onto the third first downward sliding surface 133 of the third clamping member 13 and pushes the third clamping member 13 back to the right.

[0162] As the third clamping member 13 retracts to the right, the fluid line between the third clamping member 13 and the fourth clamping member 14 is disconnected again, while the fluid line between the third clamping member 13 and the second clamping member 12 is reconnected.

[0163] It is understood that after adjusting the first driving member 21 to an inclined position relative to the left of the second driving member 22, appropriately increasing the angle of inclination between the line connecting the first driving member 21 and the second driving member 22 and the second direction can allow the first driving member 21 to cross one or more adjacent clamping members when it falls downward, directly contact the first downward sliding surface of the specific clamping member on the left, and push the specific clamping member to retract to the right, thereby reconnecting the fluid line on the left side of the specific clamping member and disconnecting the fluid line on the right side.

[0164] In other words, by adjusting the first drive member 21 to an inclined position relative to the left of the second drive member 22, it is possible to push one or more clamping members to the left and then push them back to the right, further increasing the flexibility and convenience of pipeline control.

[0165] Automatic Reset

[0166] Next, combined Figure 2 , Figure 6 The automatic reset principle of the clamping component is explained. Figure 6 This is a schematic diagram of the automatic reset principle of the clamping component.

[0167] See Figure 2The clamping component located at the very end in the downward direction is designated as the last clamping component. In this embodiment, the last clamping component is the fifth clamping component 15. The fifth clamping component 15 has a slide groove 150 connected to the second upward slide surface 152. The opening of the slide groove 150 is oriented in the third direction and is located on the side of the fifth clamping component 15 facing the valve body 20, i.e., the rear side.

[0168] As the second driving member 22 moves obliquely upward along the fifth clamping member 15's second upward sliding surface 152, when it reaches the position where the second driving member 22 connects with the slide groove 150, it slides out along the slide groove 150 to the rear side of the fifth clamping member 15 in the third direction. This causes the first driving member 21 and the second driving member 22 to disengage from the plane where the clamping assembly is located. In other words, the first driving member 21 and the second driving member 22 retract rearward, separating themselves from the clamping assembly in the third direction, and no longer interfering with the movement of the clamping assembly. Consequently, the clamping assembly can be retracted and reset in the downward direction.

[0169] Next, see Figure 6 In one embodiment, the clamping base 10 is connected to a first elastic member 31 having a predetermined allowable deformation in a first direction. During the leftward movement of the clamping assembly, the clamping base 10 moves synchronously to the left, and the first elastic member 31 undergoes elastic deformation. When the first elastic member 31 is connected to the right end 101 of the base, it is stretched. When the first elastic member 31 is connected to the left end 102 of the base, it is compressed.

[0170] After the second driving member 22 slides out of the slide groove 150 to the rear, the first driving member 21 and the second driving member 22 no longer interfere with the movement of the clamping assembly. The first elastic member 31 rebounds and drives the clamping assembly to automatically retract and reset to the right via the clamping base 10.

[0171] In another embodiment, the clamping base 10 is fixed, and the clamping assembly located at the first end in the upward direction is designated as the first clamping member. In this embodiment, the first clamping member is the first clamping member 11. A second elastic member (not shown in the figure) with a predetermined deformation allowance in the first direction is connected between the left side of the first clamping member 11 and the left end 102 of the base. During the movement of the clamping assembly to the left, the second elastic member is compressed.

[0172] After the second driving member 22 slides out of the slide groove 150 to the rear, the first driving member 21 and the second driving member 22 no longer interfere with the movement of the clamping assembly. The second elastic member rebounds and drives the clamping assembly to automatically retract and reset to the right.

[0173] Continue reading Figure 6More preferably, a third elastic element 33 with a predetermined allowable deformation in a third direction is connected between the drive rod 23 and the clamping base 10. When the second drive member 22 slides backward along the slide groove 150, the third elastic element 33 undergoes elastic deformation, for example, it is compressed; after the clamping assembly automatically retracts and resets to the right, the third elastic element 33 rebounds and drives the first drive member 21 and the second drive member 22 to reset in the third direction via the drive rod 23.

[0174] Specifically, when the second driving member 22 slides rearward along the slide groove 150, it abuts against the rear side of the clamping assembly, and the third elastic member 33 cannot rebound. At this time, the first driving member 21 and the second driving member 22 are no longer located in the XY plane where the clamping assembly is located. When the clamping assembly automatically retracts and resets to the right, each clamping member is reset to its initial state, and the clamping assembly no longer interferes with the displacement of the second driving member 22 in the third direction. The third elastic member 33 can drive the driving rod 23 to move forward and reset, so that the first driving member 21 and the second driving member 22 return to the XY plane where the clamping assembly is located, so as to restart a control cycle.

[0175] Dimensional relationship

[0176] Next, the dimensional relationships between the components will be explained with reference to Figures 7(1) and 7(2). Figure 7(1) is a dimensional schematic diagram of the drive unit 2, and Figure 7(2) is a dimensional schematic diagram of the first clamping member 11.

[0177] Wherein, H is the distance between the center of the first driving member 21 and the center of the second driving member 22 in the second direction, and L is the distance between the center of the first driving member 21 and the right edge of the second driving member 22 in the downward direction in the first direction.

[0178] A represents the distance in the second direction between the lower edge of the first upward sliding surface 111 and the upper edge of the second upward sliding surface 112 of the first clamping member 11. B represents the distance in the first direction between the upper edge and the lower edge of the second downward sliding surface 114, which is also the distance in the first direction between the upper edge and the lower edge of the first downward sliding surface 113. In other words, B represents the distance in the first direction between the left side wall of the first clamping member 11 and its upper central tip. For ease of explanation, only the first clamping member 11 is used as an example here; the dimensions and structures of other clamping members are the same as those of the first clamping member 11.

[0179] To ensure that the first driving member 21 after moving upward can fall onto the first upward sliding surface of the adjacent right clamping member when falling back, it is required that L>B. For example, after the second driving member 22 moves obliquely upward along the No.2 second upward sliding surface 122 of the second clamping member 12 to the upper edge of the No.2 second upward sliding surface 122, the right edge of the second driving member 22 abuts against the left side wall of the third clamping member 13. Since the distance L between the center of the first driving member 21 and the right edge of the second driving member 22 in the first direction is greater than the distance B between the apex at the upper end of the third clamping member 13 and its left side wall, when the first driving member 21 falls back, the center of the first driving member 21 can fall on one side of the No.3 first upward sliding surface 131 of the third clamping member 13, instead of falling to the left side of the third clamping member 13.

[0180] Assume that the maximum stroke of the driving unit 2 in the second direction is S. Then, when the driving unit 2 moves upward to the maximum stroke, let the contact point between the second driving member 22 and the right side of a single clamping member be M, and when the driving unit 2 moves downward to the maximum stroke, let the contact point between the first driving member 21 and the right side of the single clamping member be N, then the distance between point M and point N in the second direction is H-S. The condition H-S<A should be satisfied, so as to ensure that when the driving unit 2 moves upward or downward to the maximum stroke, the first driving member 21 and the second driving member 22 will not stay on the first upward sliding surface or the second upward sliding surface.

[0181] Fluid pipeline system

[0182] In the following, with reference to Figure 8 , Figure 9 the embodiments for controlling the fluid pipeline will be described. Figure 8 is a schematic diagram of the liquid circuit control principle of the conventional technology, Figure 9 is a schematic diagram of the liquid circuit control principle of the present application.

[0183] Referring to Figure 8 , during the working process, the on-off valve 48 is disconnected, the states of the first three-way valve 46 and the second three-way valve 47 are adjusted, so that the two ends of the pipeline 52 are respectively communicated with the pump 40 and the pipeline 53. Under the suction state of the pump 40, the liquid in the first container 41 enters the reaction cell 43 through the pipeline 53. After that, the state of the second three-way valve 47 is adjusted to make the pipeline 52 communicate with the pipeline 54. Under the suction state of the pump 40, the liquid in the second container 42 enters the reaction cell 43 through the pipeline 54, and reacts with the liquid in the first container 41 that previously entered the reaction cell 43.

[0184] After the reaction is complete, adjust the state of the first three-way valve 46 to connect the pump 40 to the pipeline 51, and open the on / off valve 48. The pump 40 draws through the pipeline 51 to create a negative pressure in the transfer container 44, causing the liquid in the reaction tank 43 to flow into the transfer container 44. Then, the pump 40 blows air through the pipeline 51 to create a positive pressure in the transfer container 44 and blows the liquid inside into the third container 45.

[0185] The aforementioned control process requires the continuous switching of multiple three-way valves and on / off valves. The high cost and complexity of each valve and electrical control system, coupled with the poor system reliability due to the combined operation of multiple controllers, necessitate a hydraulic switching device that can further reduce costs and improve reliability for designs that do not require high precision.

[0186] For this purpose, see Figure 9 The clamp valve assembly of this application includes a pipe 61 between the first clamping member 11 and the second clamping member 12, a pipe 62 between the second clamping member 12 and the third clamping member 13, and pipes 63 and 64 between the third clamping member 13 and the fourth clamping member 14. The two ends of pipe 63 are connected to the reaction tank 43 and the relay container 44, respectively. A pipe 65 is provided between the fourth clamping member 14 and the fifth clamping member 15. Pipes 64 and 65 are connected in parallel, with their two ends connected to the pump 40 and the relay container 44, respectively.

[0187] During operation, the first clamping member 11 and the second clamping member 12 are first separated, and the pipeline 61 is opened. The pump 40 draws liquid through the pipeline 61, allowing the liquid in the first container 41 to enter the reaction tank 43 via the pipeline 611. Then, the second clamping member 12 and the third clamping member 13 are separated, and the pipeline 62 is opened. The second clamping member 12 and the first clamping member 11 are clamped together, causing the pipeline 61 to be disconnected. The pump 40 draws liquid through the pipeline 62, allowing the liquid in the second container 42 to enter the reaction tank 43 via the pipeline 622, where it reacts with the liquid previously drawn from the first container 41.

[0188] After the reaction is complete, the third clamp 13 and the fourth clamp 14 are separated, and pipes 63 and 64 are connected. The second clamp 12 and the third clamp 13 are clamped together, thus disconnecting pipe 62. Pump 40 draws through pipe 64 to create a negative pressure in relay container 44, causing the liquid in reaction tank 43 to enter relay container 44 through pipe 63. Then, the fourth clamp 14 and the fifth clamp 15 are separated, and pipe 65 is connected. The fourth clamp 14 and the third clamp 13 are clamped together, thus disconnecting pipes 63 and 64. Pump 40 blows air through pipe 65 to create a positive pressure in relay container 44 and blows the liquid inside into third container 45.

[0189] As can be seen from the above comparison, the clamp valve assembly of this application can realize the delivery of multiple channels and liquids in the designed sequence, with fewer control devices and relatively lower cost; the circuit control is simple, and the channel switching is achieved by mechanical means, so the system has good robustness; it is highly flexible in use, and the number of clamping parts can be freely increased or decreased and the liquid circuit process can be designed according to the needs.

[0190] In summary, this application utilizes the vertical movement of the first driving member 21 and the second driving member 22 to push specific clamping members upwards, thereby separating or clamping adjacent clamping members and achieving the connection or disconnection of the fluid pipeline between them. The tilt angle of the line connecting the first driving member 21 and the second driving member 22 relative to the second direction is adjustable. When the angle is small, each vertical movement can push one clamping member; when the angle is large, each vertical movement can span multiple clamping members. When tilted in the opposite direction, in conjunction with the various downward sliding surfaces, the upward-moving clamping members can be retracted in the downward direction, further increasing the flexibility and convenience of pipeline control. It also includes a mechanism for automatically retracting and resetting the clamping components. The entire clamp valve assembly has a simple structure, is easy to control, and has a low cost.

[0191] It should be understood that the specific embodiments described above are only used to explain this application, and the scope of protection of this application is not limited thereto. Any changes, substitutions, or combinations made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and inventive concept of this application, should be covered within the scope of protection of this application.

Claims

1. A clamp valve assembly, comprising a clamping unit and a driving unit, wherein the clamp valve assembly is used to control the on / off state of multiple fluid pipelines, characterized in that: The clamping unit includes a clamping base and a clamping assembly having a first clamping member, a second clamping member, and a third clamping member; each clamping member in the clamping assembly is arranged sequentially on the clamping base and is movable along a first direction, and each clamping member has a first upward sliding surface and a second upward sliding surface at both ends that are inclined toward the same side. The driving unit includes a first driving member and a second driving member. The first driving member and the second driving member are capable of synchronously reciprocating along a second direction that intersects the first direction. The projections of the first driving member and the second driving member in the first direction and in the second direction are respectively spaced apart. The driving unit and the clamping unit are arranged along a third direction, the first driving member and the second driving member extend along the third direction, and the third direction is perpendicular to the first direction and the second direction; fluid lines are provided between two adjacent clamping members in the clamping assembly. In the initial state, the first drive member is closer to the downward direction of the clamping assembly relative to the second drive member; When the drive unit moves laterally toward the first drive member along the second direction, the second drive member can move relative to the second upward sliding surface of the first clamping member; then, the drive unit moves laterally toward the second drive member along the second direction, the first drive member can move relative to the first upward sliding surface of the second clamping member, and push the second clamping member to move upward along the first direction, so that the second clamping member clamps with the first clamping member adjacent in the upward direction and disconnects the fluid pipeline between them, so that the second clamping member separates from the third clamping member adjacent in the downward direction and connects the fluid pipeline between them.

2. The pinch valve assembly according to claim 1, characterized in that: When the second driving member moves relative to the second upward sliding surface of the first clamping member, it pushes the first clamping member to move upward along the first direction, and the second clamping member also moves in the same direction as the first clamping member; the third clamping member also moves in the same direction as the second clamping member and clamps the fluid pipeline between the two with the second clamping member.

3. The pinch valve assembly according to claim 2, characterized in that: The projection distance between the two ends of each clamping member in the clamping assembly in the second direction is not greater than the interval between the projections of the first driving member and the second driving member in that direction.

4. The pinch valve assembly according to claim 2, characterized in that: The angle between the direction determined by the first driving member and the second driving member and the second direction is adjustable.

5. The pinch valve assembly according to claim 4, characterized in that: At least a portion of the clamping members in the clamping assembly also have a first downward sliding surface and a second downward sliding surface respectively at both ends, which are inclined toward the same side; Adjust the tilt angle of the direction determined by the first driving member and the second driving member relative to the second direction, so that the first driving member is closer to the upward direction of the clamping assembly relative to the second driving member; Furthermore, when the drive unit moves to the side of the second drive member, the first drive member can slide along the first downward sliding surface of the single clamping member and push it to move in the downward direction, so that it clamps with the clamping member adjacent in the downward direction and disconnects the fluid pipeline between them, and separates from the clamping member adjacent in the upward direction and connects the fluid pipeline between them.

6. The pinch valve assembly according to any one of claims 1-5, characterized in that: The clamping member located at the very end in the downward direction of the clamping assembly is taken as the last clamping member; The end clamping member also has a slide groove connected to its second upward sliding surface, and the opening of the slide groove is oriented towards the third direction; When the second driving member moves along the second upward sliding surface of the end clamping member toward the side of the first driving member, the second driving member can slide out along the slide groove to the side of the end clamping member toward the third direction, so that the first driving member, the second driving member and the clamping assembly are disengaged. Furthermore, the clamping assembly can be retracted in a downward direction.

7. The pinch valve assembly according to claim 6, characterized in that: The clamping base is connected to a first elastic member having a predetermined allowable deformation in the first direction; As the clamping assembly moves in the upward direction, the clamping base moves synchronously with the clamping assembly, and the first elastic element undergoes elastic deformation. After the second driving member slides out of the groove, the first elastic member rebounds and drives the clamping assembly to retract in the downward direction via the clamping base.

8. The pinch valve assembly according to claim 6, characterized in that: The clamping member located at the first end in the upward direction of the clamping assembly is taken as the first clamping member; A second elastic member with a predetermined allowable deformation in the first direction is connected between the upward direction side of the first clamping member and the clamping base; As the clamping assembly moves in the upward direction, the second elastic element is compressed; After the second driving member slides out of the groove, the second elastic member rebounds and pushes the clamping assembly back in the downward direction via the first clamping member.

9. The pinch valve assembly according to claim 6, characterized in that: Each clamping member in the clamping assembly has a groove on one side in the upward and / or downward direction to allow fluid lines to pass through.

10. The pinch valve assembly according to claim 6, characterized in that: A drive rod is fixedly connected between the first drive component and the second drive component; A third elastic element with a specified allowable deformation in the third direction is connected between the drive rod and the clamping base; When the second driving member slides out along the groove to the side of the last clamping member facing the third direction, the third elastic member undergoes elastic deformation. After the clamping assembly retracts in the downward direction, the third elastic element rebounds and drives the first driving element and the second driving element to reset in the third direction via the driving rod.

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