A non-retention pneumatic antibiotic stop valve

Abstract

The utility model discloses a kind of no stagnation pneumatic antibiotic stop valve, spiral encircling type hose is arranged, fixed by sleeve, clamping rod and snap ring, on one hand, by hose access external clean air, the inside of valve body is carried out air scanning, make liquid stagnation time shorten, improve backflow speed, solve the problem that existing stop valve waits long backflow time, because the design of spiral encircling, when piston rod and valve plate retract and stretch, hose will be appropriately deformed to adapt to current motion state, avoid the situation that hose appears bending blockage or bending damage;Hose is inserted between inner tube and sleeve, extrude trapezoidal pad and clamping plate outward, finally when screw connection, push clamping plate and trapezoidal pad and compress hose, realize stable clamping purpose, unlike existing hose joint, pipe connection component in the present application is convenient to operate, installation is stable, more convenient to clamp the hose inside valve body.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a non-retention pneumatic antibiotic shut-off valve. Background Technology

[0002] Valves are devices used in media conveying systems to control the direction, pressure, and flow rate of media. In production processes such as antibiotic fermentation, which require extremely high sterility, even the slightest residue can lead to contamination and spoilage of the entire batch of products. Therefore, non-retention shut-off valves are required. Some Y-type valves form a cone shape in the middle to direct the liquid to both sides, achieving the purpose of shut-off and non-retention. For example, patent number CN 202441928 U discloses a Y-type multi-functional valve. This utility model integrates the functions of a shut-off valve, a check valve, and a regulating valve into one, with no jamming or retention, good sealing performance, long service life, and simple structure. However, this method only guides the liquid to flow freely through the inclined plane, which has the problems of slow backflow speed and long waiting time. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a non-retention pneumatic antibiotic shut-off valve.

[0004] This utility model provides a non-retention pneumatic antibiotic shut-off valve, comprising: The valve body includes a first pipe extending in a first direction and a second pipe extending in a second direction and communicating with the middle of the first pipe, wherein the ends of the first pipe and the second pipe each have a transverse connecting portion. The valve core assembly includes a mounting cylinder that is threadedly installed at the beginning of a first pipe, a cylinder that is mounted on the outer end face of the mounting cylinder, and a valve plate that is connected to the piston rod of the cylinder that extends into the interior of the first pipe. The air scavenging mechanism includes a flexible hose that extends through the outer wall of a first pipe. One end of the hose extending out of the first pipe is connected to an air supply pipe, and the other end is installed on the back end face of a valve plate via a clamp. The middle part of the hose is spirally wrapped around the outside of the piston rod.

[0005] According to the technical solution provided in the embodiments of this application, a radial hole is provided at the first end of the first pipe. The radial hole passes through the connection between the second pipe and the first pipe along the first direction. The valve plate includes a sealing sleeve. The inner wall of the radial hole fits with the outer surface of the sealing sleeve.

[0006] According to the technical solution provided in the embodiments of this application, the piston rod is provided with a plurality of insertion holes along the first direction, and a locking rod is inserted into each insertion hole. The locking rod is provided with a retaining ring at the end away from the insertion hole, and the hose passes through a retaining ring every time it wraps around the piston rod.

[0007] According to the technical solution provided in the embodiments of this application, the outer wall of the first pipe is provided with a countersunk screw hole, and a connecting pipe assembly is installed in the countersunk screw hole by thread. One end of the connecting pipe assembly is connected to the hose, and the other end is connected to the gas supply pipe.

[0008] According to the technical solution provided in the embodiments of this application, the takeover component includes: The sleeve has connecting threads on both outer surfaces, and the connecting threads mate with the countersunk screw hole threads. Several trapezoidal pads are divided into two groups and evenly distributed around the inner surface of both ends of the sleeve. The inner wall of the sleeve is provided with a gate-shaped groove around each trapezoidal pad, and the openings of the gate-shaped grooves at both ends face opposite directions. The inner tube has a middle ring in the middle that connects to the inner wall of the sleeve. The trapezoidal pads at both ends have guide slopes at their far ends. The edges of each guide slope are in contact with the outer surface of the inner tube and have a first included angle. The opening of the first included angle faces away from the center of the inner tube.

[0009] According to the technical solution provided in the embodiments of this application, the outer wall of the first pipe is provided with a binding mechanism. The binding mechanism includes a positioning sleeve disposed on the outer wall of the first pipe and whose inner surface fits the outer surface of the sleeve, and a limiting washer sleeved on the end of the first pipe away from the cylinder. One end face of the limiting washer is provided with an abutting plane. When the sleeve of one first pipe is inserted into the positioning sleeve of another first pipe, the abutting plane abuts against the end of the cylinder.

[0010] According to the technical solution provided in the embodiments of this application, a screw ring is provided on the outer surface of the middle part of the sleeve, and anti-slip stripes are provided on the outer surface of the screw ring.

[0011] According to the technical solution provided in the embodiments of this application, the bottom end of the transverse connecting part is connected to a drain plug by a thread.

[0012] According to the technical solution provided in the embodiments of this application, a sealing sleeve is provided at the position corresponding to the piston rod on the inner end face of the mounting cylinder, and the inner wall of the sealing sleeve fits with the outer wall of the piston rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model features a spiral-wound hose, secured by a clamp, clamp, and clamp ring. Firstly, the hose allows access to clean external air for air scavenging inside the valve body, shortening liquid retention time and increasing reflux speed, thus solving the problem of long reflux waiting times in existing shut-off valves. Furthermore, the spiral-wound design allows the hose to deform appropriately to adapt to the current movement state when the piston rod and valve plate retract and extend, preventing the hose from bending, clogging, or being damaged.

[0014] Furthermore, a connecting pipe assembly is provided for connecting the hose and the external air supply pipe. The hose is inserted between the inner pipe and the sleeve, pushing the trapezoidal pad and the clamping plate outward. Finally, during the threaded connection, the clamping plate and the trapezoidal pad are pushed to press the hose, achieving a stable clamping purpose. Unlike existing hose connectors, the connecting pipe assembly in this application is easy to operate, stable to install, and more convenient to clamp the hose inside the valve body.

[0015] In addition, a positioning sleeve, a limiting washer, and an abutment surface are also provided. When the positioning sleeve of one gate valve is fitted onto the sleeve of another gate valve, the abutment surface of one limiting washer abuts against the outer surface of another cylinder. Then, cable ties or ropes are used to wrap around the two first pipes for fixation, achieving the purpose of packaging the two gate valves together. In order to prevent multiple gate valves from colliding with each other during transportation, a large amount of foam or plastic is generally used for filling, or wooden frames are used for binding, or they are packed individually. With the setting of the binding mechanism, two gate valves can be packaged and transported together. While ensuring the safety of the gate valves during transportation, the amount of wooden frames, foam, and plastic used is reduced, the number of transported items is also reduced, and the transportation cost is significantly reduced.

[0016] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 A schematic diagram of a non-retention pneumatic antibiotic shut-off valve provided in this application embodiment; Figure 2 This is a schematic diagram of the air sweeping mechanism in the embodiments of this application; Figure 3 This is a schematic diagram of the installation structure of the retaining ring in an embodiment of this application; Figure 4 This is a schematic diagram of the radial hole structure in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the receiver component in an embodiment of this application; Figure 6 This is a schematic diagram of the bundled structure of the two shut-off valves in an embodiment of this application; Figure 7 This is a schematic diagram of the limiting washer in the embodiments of this application; Figure 8 for Figure 6 A magnified schematic diagram of a portion of region A in the middle.

[0018] Numbering on the map: 1. Valve body; 11. First pipe; 12. Second pipe; 2. Valve core assembly; 21. Mounting sleeve; 22. Cylinder; 23. Piston rod; 24. Sealing sleeve; 25. Valve plate; 3. Radial hole; 4. Air sweeping mechanism; 41. Hose; 42. Sleeve; 43. Snap ring; 44. Locking rod; 5. Bundling mechanism; 51. Positioning sleeve; 52. Limiting washer; 53. Abutting surface; 6. Connector assembly; 61. Sleeve; 62. Connecting thread; 63. Tightening ring; 64. Intermediate ring; 65. Inner tube; 66. Portal groove; 67. Trapezoidal pad; 7. Countersunk screw hole; 8. Expel all obstructions. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] Please refer to Figures 1-8 An embodiment of this utility model provides a non-retention pneumatic antibiotic shut-off valve, comprising: The valve body 1 includes a first pipe 11 extending in a first direction and a second pipe 12 extending in a second direction and communicating with the middle of the first pipe 11. The ends of the first pipe 11 and the second pipe 12 are both transversely connected. The valve core assembly 2 includes a mounting cylinder 21 that is threadedly connected to the beginning of the first pipe 11. A cylinder 22 is mounted on the outer end face of the mounting cylinder 21. The piston rod 23 of the cylinder 22 penetrates into the interior of the first pipe 11 and is connected to a valve plate 25. The air sweeping mechanism 4 includes a flexible hose 41 that extends through the outer wall of the first pipe 11. One end of the flexible hose 41 extending out of the first pipe 11 is connected to the air supply pipe, and the other end is installed on the back end face of the valve plate 25 through a clamp 42. The middle part of the flexible hose 41 is spirally wrapped around the outside of the piston rod 23.

[0022] like Figure 1 and Figure 2As shown, by filling the hose 41 with clean air, the clean air is discharged from the back side of the valve plate 25. When the liquid flow is cut off by the shut-off valve, the clean air will drive the gas inside the second pipe 12 to move away from the shut-off valve. This significantly increases the return flow rate without stagnation, effectively solving the problem of long return flow waiting time of existing shut-off valves. Furthermore, because the middle part of the hose 41 is spirally wrapped around the outside of the piston rod 23, the hose 41 will deform appropriately to adapt to the current movement state when the piston rod 23 and the valve plate 25 retract and extend, thus avoiding the hose 41 from bending, blocking, or being damaged.

[0023] In some embodiments, the first pipe 11 has a radial hole 3 at its head end, the radial hole 3 passes through the connection between the second pipe 12 and the first pipe 11 along the first direction, the valve plate 25 includes a sealing sleeve, and the inner wall of the radial hole 3 fits with the outer surface of the sealing sleeve.

[0024] like Figure 1 and Figure 3 As shown, the radial hole 3 reduces the machining difficulty of the valve body 1. It can be cast by mold or machined by CNC milling after casting. The machining difficulty is low and it is easy to promote. The deformation of the sealing sleeve can also achieve a good sealing effect, solving the problem that the internal cavity of the existing gate valve is complex and not conducive to machining.

[0025] In some embodiments, the piston rod 23 is provided with a plurality of insertion holes along a first direction, and a locking rod 44 is inserted into each insertion hole. The locking rod 44 is provided with a retaining ring 43 at the end away from the insertion hole, and the hose 41 passes through a retaining ring 43 for each turn around the piston rod 23.

[0026] like Figure 2 and Figure 3 As shown, the retaining ring 43 is installed by the retaining rod 44, so that the retaining ring 43 can restrict the position of the hose 41, prevent the annular diameter of the hose 41 from expanding, and ensure that the hose 41 remains stable in a spiral loop, without local widening, which would cause adjacent hoses 41 to intersect.

[0027] In some embodiments, the outer wall of the first pipe 11 is provided with a countersunk screw hole 7, and a connecting pipe assembly 6 is installed in the countersunk screw hole 7 by threads. One end of the connecting pipe assembly 6 is connected to the hose 41, and the other end is connected to the air supply pipe. Figure 1 and Figure 2 As shown, the hose 41 and the air supply pipe are connected by the connecting pipe assembly 6 to ensure that the clean air provided by the air supply pipe can smoothly enter the hose 41.

[0028] In some embodiments, the takeover component 6 includes: The sleeve 61 has connecting threads 62 on both outer surfaces, and the connecting threads 62 are threaded into the countersunk screw holes 7. Several trapezoidal pads 67 are divided into two groups and evenly distributed around the inner surfaces of both ends of the sleeve 61. The inner wall of the sleeve 61 is provided with a gate-shaped groove 66 around each trapezoidal pad 67, and the openings of the gate-shaped grooves 66 at both ends face opposite directions. The inner tube 65 has an intermediate ring 64 in the middle that is connected to the inner wall of the sleeve 61. The trapezoidal pads 67 at both ends have guide slopes at their far ends. The edges of each guide slope are in contact with the outer surface of the inner tube 65 and have a first included angle. The opening of the first included angle faces away from the center of the inner tube 65.

[0029] like Figure 1 , Figure 4 , Figure 5 and Figure 8 As shown, during installation, one end of the hose 41 is first fixed to the back end face of the valve plate 25 through the clamp 42, and then the hose 41 is spirally wrapped around the piston rod 23. During the wrapping process, the other end of the hose 41 passes through each clamp 43 in sequence, and finally extends out from the countersunk screw hole 7. After the other end of the hose 41 extends from the countersunk screw hole 7, it is inserted into the sleeve 61. The inner surface of the hose 41 fits against the outer surface of the inner tube 65. Due to the setting of the portal groove 66, the internal area of ​​the portal groove 66 forms a clamping plate shape. Therefore, the outer surface of the hose 41 will push the guide slope, causing the trapezoidal pad 67 and the clamping plate to move outward and expand. When it is threadedly connected to the countersunk screw hole 7 through the connecting thread 62, the inner wall of the countersunk screw hole 7 will push the clamping plate inward and squeeze it, causing the trapezoidal pad 67 to move inward. The hose 41 is squeezed and pressed to achieve a clamping effect. Similarly, after the air supply pipe is inserted into the other end of the sleeve 61, the air supply pipe can also be clamped by the cooperation of the nut and the connecting thread 62. This connecting pipe assembly 6 is different from the existing air pipe connector. On the one hand, it is simple and convenient to operate and can clamp the hose 41 and the air supply pipe. On the other hand, it can be installed inside the countersunk screw hole 7 of the valve body 1, so that the air pipe connector will not be misaligned, causing the hose 41 or the air supply pipe to be bent, blocked or damaged.

[0030] In some embodiments, the outer wall of the first pipe 11 is provided with a binding mechanism 5. The binding mechanism 5 includes a positioning sleeve 51 disposed on the outer wall of the first pipe 11 and whose inner surface fits the outer surface of the sleeve 61, and a limiting washer 52 sleeved on the end of the first pipe 11 away from the cylinder 22. One end face of the limiting washer 52 is provided with an abutting plane 53. When the sleeve 61 of one first pipe 11 is inserted into the positioning sleeve 51 of another first pipe 11, the abutting plane 53 abuts against the end of the cylinder 22.

[0031] like Figure 1 , Figure 6 , Figure 7 and Figure 8As shown, when the positioning sleeve 51 of one gate valve is fitted onto the sleeve 61 of another gate valve, the abutting surface 53 of a limiting washer 52 abuts against the outer surface of another cylinder 22. Then, cable ties or ropes are used to secure the two first pipes 11, achieving the purpose of combining and packaging the two gate valves. The sleeve 61 and positioning sleeve 51 restrict the relative movement of the two gate valves along the first direction and the front-back direction. The limiting effect of the abutting surface 53 and the binding with cable ties restrict the movement of the two gate valves along the second direction, ensuring the stability of the two gate valves. Currently, to prevent multiple gate valves from colliding during transportation, a large amount of foam or plastic is typically used for filling, or wooden frames are used for binding, or they are individually packaged. With the binding mechanism 5, two gate valves can be packaged and transported together. While ensuring the safety of the gate valves during transportation, the amount of wooden frames, foam, and plastic used is reduced, as is the quantity transported, significantly reducing transportation costs. In some embodiments, a screw ring 63 is provided on the outer surface of the middle portion of the sleeve 61, and the outer surface of the screw ring 63 is provided with anti-slip stripes. For example... Figure 5 and Figure 8 As shown, the sleeve 61 is rotated easily, improving the convenience of rotation.

[0032] In some embodiments, a drain plug 8 is threadedly connected to the bottom end of the transverse connecting portion. (See reference) Figure 1 Remove the drain plug 8 to determine if there is any residual liquid inside the valve body 1. You can also perform a final drain to prevent liquid from remaining inside the valve body 1.

[0033] In some embodiments, a sealing sleeve 24 is provided at the position corresponding to the piston rod 23 on the inner end face of the mounting cylinder 21, and the inner wall of the sealing sleeve 24 fits with the outer wall of the piston rod 23. Figure 1 As shown, the sealing sleeve 24 is tightly attached to the outer surface of the piston rod 23 to achieve a good sealing effect. Furthermore, the sealing sleeve 24 is provided with several sealing rings inside to improve the sealing effect.

[0034] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A no-residence pneumatic antibiotic stop valve, characterized by, include: The valve body (1) includes a first pipe (11) extending in a first direction and a second pipe (12) extending in a second direction and communicating with the middle of the first pipe (11). The ends of the first pipe (11) and the second pipe (12) both have a transverse connection portion. The valve core assembly (2) includes a mounting cylinder (21) threadedly connected to the head end of the first pipe (11), a cylinder (22) is mounted on the outer end face of the mounting cylinder (21), and the piston rod (23) of the cylinder (22) penetrates into the interior of the first pipe (11) and is connected to a valve plate (25). The air sweeping mechanism (4) includes a flexible hose (41) that can penetrate through the outer wall of the first pipe (11). One end of the flexible hose (41) extending out of the first pipe (11) is connected to the air supply pipe, and the other end is installed on the back end face of the valve plate (25) through a clamp (42). The middle part of the flexible hose (41) is spirally wrapped around the outside of the piston rod (23).

2. A non-resident pneumatic antibiotic stop-check valve according to claim 1, wherein, The first pipe (11) has a radial hole (3) at its head end. The radial hole (3) passes through the connection between the second pipe (12) and the first pipe (11) along the first direction. The valve plate (25) is covered with a sealing sleeve. The inner wall of the radial hole (3) fits the outer surface of the sealing sleeve.

3. The non-retention pneumatic antibiotic shut-off valve according to claim 1, characterized in that, The piston rod (23) has several insertion holes along the first direction, and a retaining rod (44) is inserted into each insertion hole. The end of the retaining rod (44) away from the insertion hole is provided with a retaining ring (43). The hose (41) passes through a retaining ring (43) for each turn around the piston rod (23).

4. The non-retention pneumatic antibiotic shut-off valve according to claim 1, characterized in that, The outer wall of the first pipe (11) is provided with a countersunk screw hole (7), and a connecting pipe assembly (6) is installed in the countersunk screw hole (7) by thread. One end of the connecting pipe assembly (6) is connected to the hose (41), and the other end is connected to the air supply pipe.

5. The non-retention pneumatic antibiotic shut-off valve according to claim 4, characterized in that, The takeover component (6) includes: The sleeve (61) has connecting threads (62) on both outer surfaces, and the connecting threads (62) are threaded into the countersunk screw hole (7); Several trapezoidal pads (67) are divided into two groups and evenly distributed around the inner surfaces of both ends of the sleeve (61). The inner wall of the sleeve (61) is provided with a gate-shaped groove (66) around each trapezoidal pad (67). The openings of the gate-shaped grooves (66) at both ends face opposite directions. The inner tube (65) has an intermediate ring (64) in the middle that is connected to the inner wall of the sleeve (61). The trapezoidal pads (67) at both ends have guide slopes at their far ends. The edges of each guide slope are in contact with the outer surface of the inner tube (65) and have a first angle. The opening of the first angle faces away from the center of the inner tube (65).

6. The non-retention pneumatic antibiotic shut-off valve according to claim 5, characterized in that, The outer wall of the first pipe (11) is provided with a binding mechanism (5). The binding mechanism (5) includes a positioning sleeve (51) provided on the outer wall of the first pipe (11) and whose inner surface fits the outer surface of the sleeve (61), and a limiting washer (52) sleeved on the end of the first pipe (11) away from the cylinder (22). One end face of the limiting washer (52) is provided with an abutting plane (53). When the sleeve (61) of one first pipe (11) is inserted into the positioning sleeve (51) of another first pipe (11), the abutting plane (53) abuts against the end of the cylinder (22).

7. The non-retention pneumatic antibiotic shut-off valve according to claim 5, characterized in that, The outer surface of the sleeve (61) is provided with a screw ring (63), and the outer surface of the screw ring (63) is provided with anti-slip stripes.

8. The non-retention pneumatic antibiotic shut-off valve according to claim 1, characterized in that, The bottom end of the transverse connecting part is connected to a drain plug (8) by a thread.

9. The non-retention pneumatic antibiotic shut-off valve according to claim 1, characterized in that, The inner end face of the mounting cylinder (21) is provided with a sealing sleeve (24) at the position corresponding to the piston rod (23), and the inner wall of the sealing sleeve (24) fits with the outer wall of the piston rod (23).

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