Drainage cut-off device for siphoning method

Abstract

The utility model belongs to the technical field of plasma product equipment, and particularly relates to a drainage cut-off device for a siphonage method. Comprising a driving device and siphons, the driving device comprises a rear mounting plate frame, a pressing plate mounting box, a pressing plate positioning block, a movable pressing plate set, a cam shaft, a fixed cut-off plate, a front mounting plate, a cut-off door, a movable cut-off plate, a lock rod, an electric push rod, a servo motor and a gear set. The drainage cut-off device for the siphoning method is compact and small in structure, can be used for rapidly and simply achieving automatic siphoning drainage cut-off operation, fully liberates manpower, is used for achieving automation of the siphoning method cryoprecipitation blood coagulation factor preparation process and avoiding direct contact between an operator and a blood bag in the siphoning operation process, and improves the operation efficiency. The isolation effect is enhanced, and the production safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of plasma product equipment, especially relates to a drainage interception device for siphon method. BACKGROUND

[0002] The cold precipitation siphon preparation method is a standard preparation method for cold precipitation blood clotting factors, which mainly utilizes the ice frozen plasma bag with height difference at high position, the empty plasma bag at ground position and the siphon tube connecting the two plasma bags, forms continuous siphon drainage through the flow of components in the siphon tube, gradually transfers the specific components in the thawed plasma bag to the empty plasma bag, in the process, the siphon tube needs to be manually controlled, the initial components are transferred from the high position ice frozen plasma bag to the low position empty plasma bag by continuous extrusion and other ways, so as to form the gravity difference and realize continuous siphon, the process is troublesome, inconvenient for single person operation, time-consuming and labor-consuming in the process of large batch preparation, directly affecting the efficiency of the whole process. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of drainage interception devices for siphon method, which can realize automatic siphon pushing operation and active siphon cutting opening.

[0004] To achieve the above object, the utility model adopts the following technical scheme.

[0005] A kind of drainage interception device for siphon method, including drive device 10, siphon tube 11;

[0006] Drive device 10 includes: rear mounting plate frame 12, pressing plate mounting box 13, pressing plate positioning block 14, movable pressing plate group, camshaft 16, fixed cutting plate 17, front mounting plate 18, cutting door 19, movable cutting plate 20, lock rod 21, electric push rod 22, servo motor 23, gear set 24;

[0007] Rear mounting plate frame 12 is plate frame structure, and the middle part is provided with installation port 12a, and pressing plate mounting box 13 is buckled on the rear side of rear mounting plate frame 12, and the front side of pressing plate mounting box 13 is opened and connected with installation port 12a, and the rear side of pressing plate mounting box 13 is provided with connecting port 13a;

[0008] Two pressing plate positioning blocks 14 are symmetrically spliced to form box structure and are fixed in pressing plate mounting box 13, and the inner side of pressing plate positioning block 14 is provided with installation cavity, and a plurality of horizontal guide grooves 14a are formed on the inner wall of installation cavity, and the front side of pressing plate positioning block 14 is provided with a plurality of extrusion openings 14b opposite to each guide groove 14a;The top and bottom of two pressing plate positioning blocks 14 are provided with semicircular holes, and the semicircular holes are spliced to form camshaft mounting hole 14c;

[0009] The cam shaft 16 is rotatably inserted into the cam shaft mounting hole 14c, and a plurality of cam portions 16a are arranged on the cam shaft 16; the servo motor 23 is mounted on the rear side of the pressing plate mounting box 13 and is in transmission connection with the cam shaft 16 through the gear set 24;

[0010] The movable pressing plate group comprises two groups of movable pressing plates 15 arranged above and below, each group comprising a plurality of movable pressing plates 15, which are arranged horizontally and sequentially correspond to the cam portions 16a from top to bottom; the rear side of the movable pressing plate 15 is provided with a connecting hole and is sleeved on the cam portion 16a, and the two sides are clamped into the guide slot 14a, and the front side extends out of the extrusion port 14b to form a strip-shaped extrusion portion 15a;

[0011] The fixed cutting plate 17 is fixedly arranged on the movable pressing plate 15 and located between the two groups of movable pressing plates 15 arranged above and below;

[0012] When the cam shaft 16 rotates, the cam portions 16a can respectively push the upper and lower movable pressing plates 15 to sequentially push and extrude the siphon pipe 11 from top to bottom;

[0013] The front mounting plate 18 is a frame structure and is buckled on the front side of the mounting port 12a, the cutting door 19 and the lock rod 21 are respectively arranged on the left and right sides of the mounting plate 18, and the cutting door 19 is connected to the front mounting plate 18 through a torsion spring and a door shaft 27;

[0014] The front mounting plate 18 is provided with a vertical mounting slot 18a for mounting the lock rod 21, and the upper and lower middle portions thereof are provided with siphon pipe clamping grooves 18b for inserting the siphon pipe 11;

[0015] The lock rod 21 is movably inserted into the vertical mounting slot 18a, the front side of the lock rod 21 is provided with a lock hook 21a, the front side of the vertical mounting slot 18a is provided with a lock hole 18c for the lock hook 21a to pass through, one end of the lock rod 21 extends out of the vertical mounting slot 18a to form an operating portion 21b, the inner side of the cutting door 19 is provided with a lock catch 19a which can be clamped with the lock hook 21a, and a compression spring 21e is sleeved on the lock rod 21, one end of the compression spring 21e abuts against the front mounting plate 18 to push the lock rod 21 to have a one-way movement trend to connect the lock hook 21a and the lock catch 19a;

[0016] The movable cutting plate 20 is installed on the inner side of the cutting door 19 through a vertical rotating shaft structure, and the vertical rotating shaft structure is close to the connecting side of the cutting door 19 and the front mounting plate 18, and a spring piece 30 is arranged between the front side of the movable cutting plate 20 and the rear side of the cutting door 19; when the cutting door 19 is closed, the spring piece 30 can push the movable cutting plate 20 to swing forward to press against the fixed cutting plate 17 to cut off the siphon pipe 11;

[0017] The electric push rod 22 is fixed on the front mounting plate 18 and located on the side where the lock rod 21 is located, and the electric push rod 22 can push the movable cutting plate 20 to swing backward to separate the movable cutting plate 20 from the fixed cutting plate 17 and stop cutting.

[0018] Further improvement or preferred embodiment of the drainage intercepting device for siphon method as described above,

[0019] The vertical installation groove 18a is excavated from the front side of the rear installation plate 18 which is fixed on the rear installation plate frame 12 by a set of bolts and restricts the lock rod 21 in the cavity surrounded by the vertical installation groove 18a and the front end surface of the rear installation plate frame 12.

[0020] Further improvement or preferred embodiment of the drainage intercepting device for siphon method as described above, the compression spring 21e is sleeved on the lower end of the lock rod 21, the lock rod 21 is provided with a spring limiting platform 21f near one end of the compression spring 21e, the upper end of the compression spring 21e abuts against the lower end of the spring limiting platform 21f, and the lower side wall surface of the vertical installation groove 18a abuts against the lower end of the spring limiting platform 21f.

[0021] Further improvement or preferred embodiment of the drainage intercepting device for siphon method as described above, further comprising a torsion spring 26 sleeved on the door shaft 27 for enabling the intercepting door 19 to have an opening tendency.

[0022] Further improvement or preferred embodiment of the drainage intercepting device for siphon method as described above, the left and right sides of the movable pressing plate 15 are respectively provided with front and rear sliding parts;

[0023] The middle part of the guide groove 14a is provided with a limiting part 14d, the limiting part 14d divides the guide groove 14a into front and rear parts, and the sliding parts are inserted into the front and rear parts of the guide groove 14a in a front and rear sliding manner.

[0024] Further improvement or preferred embodiment of the drainage intercepting device for siphon method as described above, the front end of the fixed intercepting plate 17 is provided with a U-shaped siphon pipe positioning groove head 17a, the rear end surface of the movable intercepting plate 20 is provided with a strip-shaped intercepting groove 20a which is opposite to the position of the siphon pipe positioning groove head 17a in position, the siphon pipe positioning groove head 17a is used for limiting the position of the left and right movement of the siphon pipe, the siphon pipe positioning groove head 17a can be clamped into the strip-shaped intercepting groove 20a, so that the siphon pipe is extruded with the inner wall of the siphon pipe positioning groove head 17a and the strip-shaped intercepting groove 20a to achieve intercepting.

[0025] Further improvement or preferred embodiment of the drainage intercepting device for siphon method as described above, the side of the movable intercepting plate 20 close to the lock rod 21 is provided with a limiting hole 20b, and the corresponding position of the intercepting door 19 is provided with a limiting screw hole 19e;

[0026] The limiting hole 20b is provided with a limiting bolt 25, the limiting bolt 25 is selected into the limiting screw hole 19e and limits the swing angle of the movable intercepting plate 20.

[0027] Further improvement or preferred embodiment of the preceding drainage and interception device for siphon method, the camshaft comprises a main shaft, and a plurality of independent cam parts 16a connected to the main shaft through connecting keys, and the cam parts 16a are provided with shaft holes which can be sleeved on the main shaft.

[0028] The beneficial effects are that:

[0029] The drainage and interception device for siphon method is compact and small in structure, can be used for quickly and simply realizing automatic siphon drainage and interception operation, fully liberating manpower, being used for realizing automation of siphon method cold precipitation blood coagulation factor preparation process and avoiding direct contact of an operator with a blood bag in a siphon operation process, strengthening isolation effect and improving production safety. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the front view of the drainage and interception device for siphon method;

[0031] Figure 2 is the partial sectional view of the drainage and interception device for siphon method;

[0032] Figure 3 is the assembly view of the drainage and interception device for siphon method;

[0033] The reference signs include:

[0034] Drive device 10, siphon pipe 11, rear mounting plate frame 12, mounting port 12a, pressing plate mounting box 13, connecting port 13a, pressing plate positioning block 14, guide groove 14a, extrusion port 14b, camshaft mounting hole 14c, limiting part 14d, movable pressing plate 15, camshaft 16, cam part 16a, fixed interception plate 17, siphon pipe positioning groove head 17a, front mounting plate 18, vertical mounting groove 18a, siphon pipe clamping groove 18b, lock hole 18c, interception door 19, lock catch 19a, limiting screw hole 19e, movable interception plate 20, strip-shaped interception groove 20a, limiting hole 20b, lock rod 21, lock hook 21a, operation part 21b, compression spring 21e, spring limiting table 21f, electric push rod 22, servo motor 23, gear set 24, limiting bolt 25, torsional spring 26, door shaft 27, elastic sheet 30. DETAILED DESCRIPTION

[0035] The utility model will be described in detail in combination with specific embodiments.

[0036] The drainage and interception device for siphon method of the utility model is mainly used for the control and driving structure for interception and drainage in automatic cold precipitation preparation equipment.

[0037] As Figure 1 , Figure 2As shown, it mainly comprises a driving device 10 and a siphon 11;

[0038] The driving device 10 comprises a rear mounting plate frame 12, a pressing plate mounting box 13, a pressing plate positioning block 14, a movable pressing plate group, a camshaft 16, a fixed cutting plate 17, a front mounting plate 18, a cutting door 19, a movable cutting plate 20, a lock rod 21, an electric push rod 22, a servo motor 23 and a gear set 24.

[0039] The rear mounting plate frame 12 is a plate frame structure, and a mounting opening 12a is arranged in the middle. The pressing plate mounting box 13 is buckled on the rear side of the rear mounting plate frame 12. The front side of the pressing plate mounting box 13 is open and connected with the mounting opening 12a. The rear side of the pressing plate mounting box 13 is provided with a connecting opening 13a.

[0040] The two pressing plate positioning blocks 14 are symmetrically spliced to form a box structure and are fixed in the pressing plate mounting box 13. The inner side of the pressing plate positioning block 14 is provided with a mounting cavity. A plurality of horizontal guide grooves 14a are arranged on the inner wall of the mounting cavity. The front side of the pressing plate positioning block 14 is provided with a plurality of extrusion openings 14b opposite to the guide grooves 14a. The top and bottom of the two pressing plate positioning blocks 14 are provided with semicircular holes, which form a camshaft mounting hole 14c after splicing.

[0041] The camshaft 16 is rotatably inserted into the camshaft mounting hole 14c. A plurality of cam portions 16a are arranged on the camshaft 16. The servo motor 23 is installed on the rear side of the pressing plate mounting box 13 and is in transmission connection with the camshaft 16 through the gear set 24.

[0042] In this embodiment, the camshaft comprises a main shaft and a plurality of independent cam portions 16a connected to the main shaft through connecting keys. The cam portion 16a is provided with a shaft hole which can be sleeved on the main shaft.

[0043] The movable pressing plate group comprises two groups of movable pressing plates 15 arranged in an upper and lower manner. Each group comprises a plurality of movable pressing plates 15. The movable pressing plates 15 are arranged horizontally and sequentially opposite to the cam portions 16a from top to bottom. The rear side of the movable pressing plate 15 is provided with a connecting hole and is sleeved on the cam portion 16a. The two sides are clamped into the guide groove 14a, and the front side extends out of the extrusion opening 14b to form a strip-shaped extrusion portion 15a.

[0044] The fixed cutting plate 17 is fixedly arranged on the movable pressing plate 15 and located between the upper and lower groups of movable pressing plates 15.

[0045] When the camshaft 16 rotates, the cam portion 16a can respectively push the upper and lower groups of movable pressing plates 15 to sequentially push and extrude the siphon 11 from top to bottom.

[0046] The front mounting plate 18 is a frame structure and is buckled on the front side of the mounting opening 12a. The cutting door 19 and the lock rod 21 are respectively arranged on the left and right sides of the mounting plate 18. The cutting door 19 is connected to the front mounting plate 18 through a torsional spring and a door shaft 27.

[0047] The front mounting plate 18 is provided with a vertical mounting slot 18a for mounting the lock rod 21, and a siphon pipe clamping slot 18b is arranged in the middle of the upper and lower sides of the vertical mounting slot 18a for clamping the siphon pipe 11;

[0048] The lock rod 21 is movably inserted into the vertical mounting slot 18a, the front side of the lock rod 21 is provided with a lock hook 21a, the front side of the vertical mounting slot 18a is provided with a lock hole 18c for the lock hook 21a to pass through, one end of the lock rod 21 extends out of the vertical mounting slot 18a to form an operation part 21b, the inner side of the intercepting door 19 is provided with a lock catch 19a capable of clamping the lock hook 21a, and a compression spring 21e is further sleeved on the lock rod 21, one end of the compression spring 21e abuts against one end of the front mounting plate 18 to push the lock rod 21 to have a one-way movement trend to connect the lock hook 21a and the lock catch 19a;

[0049] The movable intercepting plate 20 is installed on the inner side of the intercepting door 19 through a vertical rotating shaft structure, the vertical rotating shaft structure is close to the connecting side of the intercepting door 19 and the front mounting plate 18, and a spring piece 30 is arranged between the front side of the movable intercepting plate 20 and the rear side of the intercepting door 19; when the intercepting door 19 is closed, the spring piece 30 can push the movable intercepting plate 20 to swing forward to press against the fixed intercepting plate 17 to intercept the siphon pipe 11;

[0050] The electric push rod 22 is fixed on the front mounting plate 18 and located on the side where the lock rod 21 is located, the electric push rod 22 can push the movable intercepting plate 20 to swing backward to separate the movable intercepting plate 20 from the fixed intercepting plate 17 and stop the interception.

[0051] The front end of the fixed intercepting plate 17 is provided with a U-shaped siphon pipe positioning slot head 17a, the rear end surface of the movable intercepting plate 20 is provided with a strip-shaped intercepting slot 20a opposite to the position of the siphon pipe positioning slot head 17a, the siphon pipe positioning slot head 17a is used for limiting the position of the left and right movement of the siphon pipe, the siphon pipe positioning slot head 17a can be clamped into the strip-shaped intercepting slot 20a, so that the siphon pipe is pressed against the inner walls of the siphon pipe positioning slot head 17a and the strip-shaped intercepting slot 20a to achieve the interception.

[0052] The side close to the lock rod 21 of the movable intercepting plate 20 is provided with a limiting hole 20b, and the corresponding position of the intercepting door 19 is provided with a limiting screw hole 19e;

[0053] A limiting bolt 25 is arranged in the limiting hole 20b, the limiting bolt 25 is selected into the limiting screw hole 19e to limit the swing angle of the intercepting plate 20.

[0054] In order to ensure that the lock rod can move smoothly and facilitate installation and assembly, in the embodiment, the vertical mounting slot 18a is dug out from the rear side of the front mounting plate 18 to the front, the front mounting plate 18 is fixed on the rear mounting plate frame 12 through the bolt group to the rear, and the lock rod 21 is limited in the cavity surrounded by the vertical mounting slot 18a and the front end surface of the rear mounting plate frame 12.

[0055] In particular, in order to control the opening and closing of the cutoff door and to facilitate the assembly of the fixed siphon, the compression spring 21e is sleeved on the lower end of the lock rod 21, the end of the lock rod 21 close to the compression spring 21e is provided with a spring limiting table 21f, and the upper end of the compression spring 21e abuts against the lower end of the spring limiting table 21f and abuts against the lower side wall surface of the vertical installation slot 18a.

[0056] In particular, in order to facilitate operation, the embodiment further includes a torsion spring 26 sleeved on the door shaft 27 for enabling the cutoff door 19 to have an opening tendency.

[0057] In order to facilitate the limitation of the front and back movement range of the movable pressing plate, two front and back sliding portions are respectively arranged on the left and right sides of the movable pressing plate 15; correspondingly, the middle part of the guide slot 14a is provided with a limiting portion 14d, the limiting portion 14d divides the guide slot 14a into two front and back portions, and the sliding portions are inserted into the front and back portions of the guide slot 14a in a front and back sliding manner.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the protection scope of the present application. Although the present application has been 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 replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A flow diversion and interception device for siphonage, characterised in that, The drive device (10) comprises a rear mounting plate frame (12), a pressing plate mounting box (13), a pressing plate positioning block (14), a movable pressing plate group, a camshaft (16), a fixed cutting plate (17), a front mounting plate (18), a cutting door (19), a movable cutting plate (20), a lock rod (21), an electric push rod (22), a servo motor (23), and a gear set (24). The rear mounting plate frame (12) is a plate frame structure, and a mounting opening (12a) is arranged in the middle. The pressing plate mounting box (13) is buckled on the rear side of the rear mounting plate frame (12), and the front side of the pressing plate mounting box (13) is open and connected with the mounting opening (12a). The rear side of the pressing plate mounting box (13) is provided with a connecting opening (13a). The two pressing plate positioning blocks (14) are symmetrically spliced to form a box structure and are fixed in the pressing plate mounting box (13). The inner side of the pressing plate positioning block (14) is provided with a mounting cavity, and a plurality of horizontal guide grooves (14a) are arranged on the inner wall of the mounting cavity. The front side of the pressing plate positioning block (14) is provided with a plurality of extrusion openings (14b) opposite to the guide grooves (14a). The top and bottom of the two pressing plate positioning blocks (14) are provided with semicircular holes, and the semicircular holes form a camshaft mounting hole (14c) after splicing. The camshaft (16) is rotatably inserted into the camshaft mounting hole (14c), and a plurality of cam portions (16a) are arranged on the camshaft (16). The servo motor (23) is installed on the rear side of the pressing plate mounting box (13) and is in transmission connection with the camshaft (16) through the gear set (24). The movable pressing plate group comprises two groups of movable pressing plates (15), each group comprising a plurality of movable pressing plates (15). The movable pressing plates (15) are arranged horizontally and sequentially opposite to the cam portions (16a) from top to bottom. The rear side of the movable pressing plate (15) is provided with a connecting hole and is sleeved on the cam portion (16a). The two sides are clamped into the guide groove (14a), and the front side extends out of the extrusion opening (14b) to form a strip-shaped extrusion portion (15a). The fixed cutting plate (17) is fixedly arranged on the movable pressing plate (15) and located between the two groups of movable pressing plates (15). When the camshaft (16) rotates, the cam portions (16a) can respectively push the upper and lower movable pressing plates (15) to sequentially push and extrude the siphon (11) from top to bottom. The front mounting plate (18) is a frame structure and is buckled on the front side of the mounting opening (12a). The cutting door (19) and the lock rod (21) are arranged on the left and right sides of the mounting plate (18), respectively. The cutting door (19) is connected to the door shaft (27) on the front mounting plate (18) through a torsional spring. A vertical mounting groove (18a) for mounting the lock rod (21) is arranged on the front mounting plate (18), and a siphon clamping groove (18b) for inserting the siphon (11) is arranged in the middle of the upper and lower sides of the vertical mounting groove (18a). ​ The lock rod (21) is movably inserted in the vertical installation slot (18a), the front side of the lock rod (21) is provided with a lock hook (21a), the front side of the vertical installation slot (18a) is provided with a lock hole (18c) for the lock hook (21a) to pass through, one end of the lock rod (21) extends out of the vertical installation slot (18a) to form an operation part (21b), the inner side of the cut-off door (19) is provided with a lock catch (19a) capable of being clamped with the lock hook (21a), the lock rod (21) is further sleeved with a compression spring (21e), one end of the compression spring (21e) pushes the lock rod (21) to have a one-way movement trend to make the lock hook (21a) connected with the lock catch (19a); The movable cut-off plate (20) is installed on the inner side of the cut-off door (19) through a vertical rotating shaft structure, the vertical rotating shaft structure is close to the connecting side of the cut-off door (19) and the front mounting plate (18), and a spring sheet (30) is arranged between the front side of the movable cut-off plate (20) and the rear side of the cut-off door (19); when the cut-off door (19) is closed, the spring sheet (30) can push the movable cut-off plate (20) to swing forward and press against the fixed cut-off plate (17) to cut off the siphon pipe (11). The electric push rod (22) is fixed on the front mounting plate (18) and located on the side of the lock rod (21), and the electric push rod (22) can push the movable cut-off plate (20) to swing backward to make it separate from the fixed cut-off plate (17) and stop cutting off.

2. The drainage and flow cutting device for siphon method according to claim 1, wherein the vertical installation slot (18a) is dug out from the rear side of the front mounting plate (18) to the front, the front mounting plate (18) is fixed on the rear mounting plate frame (12) through the bolt group to the rear, and the lock rod (21) is limited in the cavity formed by the vertical installation slot (18a) and the front end face of the rear mounting plate frame (12). The compression spring (21e) is sleeved on the lower end of the lock rod (21), the lock rod (21) is provided with a spring limiting table (21f) at the end close to the compression spring (21e), the upper end of the compression spring (21e) abuts against the lower end of the spring limiting table (21f), and the lower side wall face of the vertical installation slot (18a).

3. The flow intercept and stop device for siphon applications of claim 1, wherein, A torsional spring (26) is further sleeved on the door shaft (27) to make the cut-off door (19) have an opening trend.

4. The flow intercept and stop device for use in the siphon method according to claim 1, characterized in that The left and right sides of the movable pressing plate (15) are respectively provided with front and rear sliding parts; 5. The flow intercept and stop device for use in siphon methods according to claim 1, wherein, The middle part of the guide groove (14a) is provided with a limiting part (14d), the limiting part (14d) divides the guide groove (14a) into two front and rear parts, and the sliding parts are movably inserted into the front and rear parts of the guide groove (14a). The front end of the fixed cut-off plate (17) is provided with a U-shaped siphon pipe positioning groove head (17a), the rear end face of the movable cut-off plate (20) is provided with a strip-shaped cut-off groove (20a) opposite to the position of the siphon pipe positioning groove head (17a), the siphon pipe positioning groove head (17a) is used for limiting the position of the left and right movement of the siphon pipe, the siphon pipe positioning groove head (17a) can be clamped into the strip-shaped cut-off groove (20a), so that the siphon pipe is extruded with the inner wall of the siphon pipe positioning groove head (17a) and the strip-shaped cut-off groove (20a) to achieve cutting off.

6. The flow intercept and stop device for use in the siphon method according to claim 1, characterized in that ​ 7. The flow intercept and stop device for use in siphon methods according to claim 1, wherein, The movable cut-off plate (20) is provided with a limiting hole (20b) near one side of the lock rod (21), and the cut-off door (19) is provided with a limiting screw hole (19e) at a corresponding position; A limiting bolt (25) is arranged in the limiting hole (20b), and the limiting bolt (25) is selected into the limiting screw hole (19e) and limits the swing angle of the movable cut-off plate (20).

8. The flow intercept and stop device for use in the siphon method according to claim 1, characterized in that, The camshaft comprises a main shaft and a plurality of independent cam parts (16a) connected to the main shaft through connecting keys, and the cam parts (16a) are provided with shaft holes which can be sleeved on the main shaft.

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