Iris valve with bidirectional rotating structure
By adopting a bidirectional rotating structure and a gear limiting mechanism in the iris valve, the problems of slow response speed and blockage are solved, and the cutting efficiency and service life of the valve core are improved.
Patent Information
- Application Number
- CN202411485236.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-23
- Publication Date
- 2024-12-20
AI Technical Summary
The existing iris valves respond slowly during the discharge process, and when the material is light, it is easy to cause the valve body to be blocked and cannot sag naturally, resulting in redundant extrusion of the valve core material, affecting the service life.
The iris valve adopting a bidirectional rotating structure can achieve simultaneously rotating between the upper and lower ends of the valve core by rotating driving source, the active rotary body, the first driven rotary body and the second driven rotary body, thereby shortening the valve core length and improving the The discharge linear speed is used and the barrier limiting mechanism prevents excessive force from affecting the valve core life.
The response speed is improved, the valve body is blocked, the valve core is extended, and the linear speed and accuracy of the discharge are ensured.
Smart Images
Figure CN119163764A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of iris valve blanking, and in particular to an iris valve with a bidirectional rotating structure. Background Art
[0002] At present, traditional iris valves on the market fix the two ends of the flexible valve core, and manually twist the valve body handle or automatically twist to drive the middle of the valve core to rotate. During the twisting process, the valve mouth gradually closes (opens), and when it is twisted to a certain angle, the valve mouth can be completely closed (opened).
[0003] The transmission structure of the iris valve on the market determines that the valve will produce two torsion areas when it is closed. One is the torsion space generated by the fixed port at the upper end of the valve core and the middle rotating valve core part, and the other is the torsion space generated by the fixed port at the lower end of the valve core and the middle rotating valve core part. Too many rotation areas will cause the overall length of the valve core to be too long. When the valve is opened, if the tension of the valve core is large and it cannot droop naturally, the valve core material will be too redundant in the two rotating spaces of the medium channel, that is, the valve core material will be squeezed together; when the medium is more and heavier, the valve core can be pressed down by the gravity of the medium. When the channel medium material is lighter and less, the valve core material cannot be pressed down by the gravity of the channel medium itself, which will cause material accumulation or even blockage in the valve body.
[0004] At the same time, since the opening and closing of the entire valve body is controlled by the central rotating valve core, its response speed is slow and the linearity of the material feeding speed is poor, which is not ideal in situations where precise control of the material feeding accuracy is required. Summary of the invention
[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide an iris valve with a bidirectional rotating structure to solve the technical problems in the field of iris valve feeding technology such as slow response speed, slow feeding speed and valve body blockage when the material is light.
[0006] In order to achieve the above technical objectives, the technical solution of the present invention provides an iris valve with a bidirectional rotation structure, comprising:
[0007] A rotational driving source, an active rotating body, a first driven rotating body and a second driven rotating body; the output shaft of the rotational driving source is drivingly connected to the active rotating body; the first driven rotating body is located at the upper end of the active rotating body; the second driven rotating body is located at the lower end of the active rotating body; the first driven rotating body and the second driven rotating body are both meshed and rotationally connected with the active rotating body; the upper end of the first driven rotating body is detachably fixedly connected with a first lock end cover; the lower end of the second driven rotating body is detachably fixedly connected with a second lock end cover; a valve core is arranged between the first driven rotating body and the second driven rotating body; the upper end of the valve core is clamped and fixed by the first driven rotating body and the first lock end cover; the lower end of the valve core is clamped and fixed by the second driven rotating body and the second lock end cover.
[0008] Compared with the prior art, the beneficial effects of the present invention include:
[0009] 1. Fast response speed: The iris valve with a bidirectional rotation structure provided by the invention rotates simultaneously at the upper and lower ends of the valve core, and its response speed is twice that of the iris valve with the middle part of the valve core rotating.
[0010] 2. The linear speed of material discharge is fast and the valve body is prevented from being blocked: the iris valve with a bidirectional rotating structure provided by the invention adopts an active rotating body, a first driven rotating body and a second driven rotating body to drive, which greatly reduces the length of the valve core and makes the linear speed of material discharge of the valve core faster; at the same time, the rotation angle of the second limiting rotating body is adjusted by the limiting strip to facilitate the control of the tightness of the valve core when it is closed, and prevent the valve core from being too redundant in the two rotating spaces of the medium channel, being squeezed together, and causing blockage in the valve body.
[0011] 3. Long service life: The iris valve with a bidirectional rotating structure provided by the invention adopts a limiting mechanism to prevent the valve core from being subjected to a huge force that would seriously affect its service life and operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the iris valve with a bidirectional rotating structure provided by the present invention;
[0013] Figure 2 It is a schematic diagram of the internal structure of the iris valve with a bidirectional rotating structure provided by the present invention;
[0014] Figure 3 1 is a schematic diagram of the top view of the iris valve with a bidirectional rotating structure provided by the present invention;
[0015] Figure 4 AA is a schematic cross-sectional view of an iris valve with a bidirectional rotating structure provided by the present invention;
[0016] Figure 5 It is a schematic diagram of the installation structure of the active rotating body, the first driven rotating body and the second driven rotating body of the iris valve with a bidirectional rotating structure provided by the present invention;
[0017] Figure 6 It is a schematic structural diagram of the limiting mechanism of the iris valve with a bidirectional rotating structure provided by the present invention. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0021] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 This embodiment provides an iris valve with a bidirectional rotation structure, including: a rotation driving source 1, an active rotating body 2, a first driven rotating body 3 and a second driven rotating body 4.
[0022] Furthermore, the output shaft of the rotation driving source 1 is drivingly connected to the active rotating body 2, the first driven rotating body 3 is located at the upper end of the active rotating body 2, and the second driven rotating body 4 is located at the lower end of the active rotating body 2, the first driven rotating body 3 and the second driven rotating body 4 are both meshingly and rotationally connected to the active rotating body 2, the upper end of the first driven rotating body 3 is detachably fixedly connected with a first lock end cover 5, and the lower end of the second driven rotating body 4 is detachably fixedly connected with a second lock end cover 6, a valve core 7 is arranged between the first driven rotating body 3 and the second driven rotating body 4, the upper end of the valve core 7 is clamped and fixed by the first driven rotating body 3 and the first lock end cover 5, and the lower end of the valve core is clamped and fixed by the second driven rotating body 4 and the second lock end cover 6.
[0023] Preferably, the rotary drive source 1 is selected as a pneumatic drive source. In this embodiment, the pneumatic drive source has the following advantages: 1. High safety: the pneumatic system will not generate electric sparks during operation, reducing the risk of fire or explosion, which is especially important for production in flammable and explosive environments; 2. High reliability: the pneumatic system has a simple structure and is easy to maintain, and can maintain high working stability even in harsh working environments; 3. Overload protection: when the pneumatic system encounters an overload, it can avoid equipment damage by naturally releasing air pressure, and has good self-protection capabilities.
[0024] Preferably, the active rotating body 2, the first driven rotating body 3 and the second driven rotating body 4 are all bevel gears. In this embodiment, the use of gear transmission has the following advantages: 1. High efficiency: gear transmission can directly transmit power and has high transmission efficiency; 2. Compact structure: gear transmission can transmit greater power in a smaller space, so its structure is relatively compact, saving space, and at the same time making the length of the valve core 7 shorter, so that the linear speed of the valve core 7 is faster; 3. Accurate transmission ratio: by reasonably designing the gear tooth ratio, the speed ratio between the output shaft and the input shaft can be accurately controlled to ensure the accuracy of the transmission process, thereby accurately controlling the opening and closing of the valve core 7.
[0025] Specifically, the rotary drive source 1 drives the active rotating body 2 to rotate. Under the drive of the active rotating body 2, the first driven rotating body 3 and the second driven rotating body 4 rotate, but the first driven rotating body 3 and the second driven rotating body 4 rotate in opposite directions, thereby driving the middle part of the valve core 7 to twist and close. Since the upper and lower ends of the valve core 7 rotate at the same time, its response speed is twice that of the iris valve whose middle part rotates.
[0026] Furthermore, the upper end of the first lock end cover 5 is slidably connected to the feed end cover 8, the lower end of the feed end cover 8 is provided with a first limiting groove 8a, and the first lock end cover 5 is placed in the first limiting groove 8a, and the lower end of the second lock end cover 6 is slidably connected to the discharge end cover 9, the upper end of the discharge end cover 9 is provided with a second limiting groove 9a, and the second lock end cover 6 is placed in the second limiting groove 9a.
[0027] Specifically, the first lock end cover 5 and the second lock end cover 6 mainly play the role of axial positioning of the first driven rotating body 3 and the second driven rotating body 4 respectively.
[0028] Furthermore, an inner retaining ring 10 is provided between the outer peripheral wall of the valve core 7 and the active rotating body 2 , the upper end surface of the inner retaining ring 10 abuts against the lower end surface of the first driven rotating body 3 , and the lower end surface of the inner retaining ring 10 abuts against the upper end surface of the second driven rotating body 4 .
[0029] Specifically, in order to avoid the risk of the valve core 7 being involved in the meshing gear during rotation, the inner retaining ring 10 is installed on the outer wall of the valve core 7, which can effectively separate the rotation area of the valve core 7 from the meshing area of the active rotating body 2 and the first driven rotating body 3 and the second driven rotating body 4.
[0030] Furthermore, a first limiting ring 11 and a second limiting ring 12 are fixedly connected to the lower end of the feed end cover 8 , and the inner walls of the first limiting ring 11 and the second limiting ring 12 are both close to the outer peripheral wall of the first driven rotating body 3 .
[0031] Furthermore, the lower end of the second limiting ring 12 is detachably fixedly connected to a shell 13, and the shell 13 is fixedly connected to the shell of the rotary drive source 1. The lower end of the shell 13 is close to the valve core 7 on one side close to the outer peripheral wall of the second driven rotating body 4, and the upper end of the unloading end cover 9 is fixedly connected to a third limiting ring 14, and the inner wall of the third limiting ring 14 is close to the outer peripheral wall of the second driven rotating body 4.
[0032] Specifically, the outer circumferential wall heights of the first limiting ring 11 and the second limiting ring 12 are equal to the outer circumferential wall heights of the first driven rotating body 3 , and the first limiting ring 11 and the second limiting ring 12 mainly play a role in radial positioning of the first driven rotating body 3 .
[0033] Specifically, the height of the lower end side surface of the housing 13 and the outer peripheral wall height of the third limiting ring 14 are equal to the outer peripheral wall height of the second driven rotating body 4 , and the third limiting ring 14 mainly plays a role in radial positioning of the second driven rotating body 4 .
[0034] Furthermore, the end face of the rotary drive source 1 away from the valve core 7 is fixedly connected to a limiting mechanism 15, and the limiting mechanism 15 includes a limiting base 151, a first limiting rotating body 152, a second limiting rotating body 153 and a limiting bar 154, the limiting base 151 is fixed to the end face of the rotary drive source 1, the first limiting rotating body 152 is connected to the driving of the rotary drive source 1, and the second limiting rotating body 153 is rotationally connected to the first limiting rotating body 152.
[0035] Specifically, a dust cover 16 is provided on the limiting mechanism 15 to prevent dust from entering the limiting mechanism 15 .
[0036] Specifically, as described above, the opening and closing of the valve body 7 can be achieved through the bidirectional rotation of the first driven rotor 3 and the second driven rotor 4. However, since the entire system has no feedback, no matter whether the valve core 7 is opened or closed, the first driven rotor 3 and the second driven rotor 4 will only rotate in one direction. The valve core 7 will also be subjected to a huge force and seriously affect the life and operating conditions of the valve core 7. In order to solve this problem, the limiting mechanism 15 is added to the rotation drive source 1.
[0037] Preferably, the first stop-limiting rotating body 152 and the second stop-limiting rotating body 153 are driven by gear meshing, wherein the second stop-limiting rotating body 153 is driven by an incomplete gear.
[0038] Furthermore, there are two limit bars 154, which are placed on one side of the second limit rotating body 153 and fixedly connected to the limit base 151. The limit base 151 is provided with a plurality of mounting holes 151a to adjust the rotation angle of the second limit rotating body 153 to facilitate the control of the tightness of the valve core 7 when it is closed; the second limit rotating body 153 is fan-shaped, and the second limit rotating body 153 has a first limit surface 153a and a second limit surface 153b.
[0039] Furthermore, when the valve core 7 is fully opened, the first limiting surface 153a or the second limiting surface 153b abuts against one of the limiting strips 154 , and when the valve core 7 is fully closed, the second limiting surface 153b or the first limiting surface 153a abuts against the other of the limiting strips 154 .
[0040] Specifically, when the output shaft of the rotary drive source 1 rotates, it drives the first limiting rotating body 152 and the second limiting rotating body 153 to engage and rotate. When the valve core 7 is in a fully open state, the first limiting surface 153a or the second limiting surface 153b contacts one of the limiting bars 154, blocking the power from continuing to transmit power to the valve body through the output shaft of the rotary drive source 1. At this time, the rotary drive source 1 is in a blocked state.
[0041] When the valve core 7 is to be closed, the output shaft of the rotary drive source 1 drives the first limiting rotating body 152 to reverse, and the second limiting rotating body 153 engaged therewith rotates in the opposite direction. When the valve core 7 is fully closed, the second limiting surface 153b or the first limiting surface 153a just rotates to contact with the other limiting strip 154, blocking the power from continuing to transmit power to the valve body 7 through the output shaft of the rotary drive source 1. The rotary drive source 1 is in a stalled state. The function of the limiting mechanism 15 is to block a link in the power transmission route so that the first driven rotating body 3 and the second driven rotating body 4 can only rotate at a certain angle, thereby protecting the valve core 7.
[0042] Furthermore, the limiting strip 154 is made of brass material, and the first limiting ring 11, the second limiting ring 12, the third limiting ring 14, the first lock end cover 5 and the second lock end cover 6 are all made of polytetrafluoroethylene material.
[0043] Specifically, since the limiting strip 154 is made of brass material, the risk of sparks during collision is avoided, thereby improving the safety performance of the device.
[0044] Specifically, since the moving part of the valve core 7 is in friction contact with the first limit ring 11, the second limit ring 12, the third limit ring 13, the first lock end cover 5 and the second lock end cover 6, in order to reduce friction resistance and safety hazards, they are all made of polytetrafluoroethylene material, which has high rigidity and low friction coefficient.
[0045] Working principle: The iris valve with a bidirectional rotation structure provided by the invention includes a rotation driving source, an active rotor, a first driven rotor and a second driven rotor. The output shaft of the rotation driving source 1 is drivingly connected to the active rotor 2, the first driven rotor 3 is located at the upper end of the active rotor 2, the second driven rotor 4 is located at the lower end of the active rotor 2, the first driven rotor 3 and the second driven rotor 4 are both meshed and rotationally connected with the active rotor 2, the upper end of the first driven rotor 3 is detachably fixedly connected with a first lock end cover 5, the lower end of the second driven rotor 4 is detachably fixedly connected with a second lock end cover 6, a valve core 7 is arranged between the first driven rotor 3 and the second driven rotor 4, the upper end of the valve core 7 is clamped and fixed by the first driven rotor 3 and the first lock end cover 5, and the lower end of the valve core is clamped and fixed by the second driven rotor 4 and the second lock end cover 6.
[0046] Specifically, the rotary drive source 1 drives the active rotating body 2 to rotate. Under the drive of the active rotating body 2, the first driven rotating body 3 and the second driven rotating body 4 rotate, but the first driven rotating body 3 and the second driven rotating body 4 rotate in opposite directions, thereby driving the middle part of the valve core 7 to twist and close. Since the upper and lower ends of the valve core 7 rotate at the same time, its response speed is twice that of the iris valve whose middle part rotates.
[0047] Specifically, the output shaft of the rotary drive source 1 drives the first limit-blocking rotating body 152 and the second limit-blocking rotating body 153 to engage and rotate when the valve core 7 is in a fully open state, and the first limit-blocking surface 153a or the second limit-blocking surface 153b contacts one of the limit-blocking bars 154, blocking the power from continuing to transmit power to the valve body through the output shaft of the rotary drive source 1. At this time, the rotary drive source 1 is in a blocked state; when the valve core 7 is to be closed, the output shaft of the rotary drive source 1 drives the first limit-blocking rotating body 152 to reverse. , the second limiting rotating body 153 engaged therewith rotates in the opposite direction. When the valve core 7 is fully closed, the second limiting surface 153b or the first limiting surface 153a just rotates to contact with the other limiting strip 154, blocking the power from continuing to transmit power to the valve body 7 through the output shaft of the rotary drive source 1. The rotary drive source 1 is in a blocked state. The function of the limiting mechanism 15 is to block a link in the power transmission route so that the first driven rotating body 3 and the second driven rotating body 4 can only rotate at a certain angle, thereby protecting the valve core 7.
[0048] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.
Claims
1. An iris valve with a bidirectional rotating structure, characterized in that: include: A rotation driving source, an active rotating body, a first driven rotating body and a second driven rotating body; the output shaft of the rotation driving source is drivingly connected to the active rotating body; The first driven rotor is located at the upper end of the active rotor; the second driven rotor is located at the lower end of the active rotor; the first driven rotor and the second driven rotor are both meshed and rotationally connected with the active rotor; the upper end of the first driven rotor is detachably fixedly connected with a first lock end cover; the lower end of the second driven rotor is detachably fixedly connected with a second lock end cover; a valve core is arranged between the first driven rotor and the second driven rotor; the upper end of the valve core is clamped and fixed by the first driven rotor and the first lock end cover; the lower end of the valve core is clamped and fixed by the second driven rotor and the second lock end cover.
2. The iris valve with a bidirectional rotation structure according to claim 1, characterized in that: The upper end of the first lock end cover is slidably connected to the feed end cover; the lower end of the feed end cover is provided with a first limiting groove; the first lock end cover is placed in the first limiting groove; the lower end of the second lock end cover is slidably connected to the discharge end cover; the upper end of the discharge end cover is provided with a second limiting groove; the second lock end cover is placed in the second limiting groove.
3. The iris valve with a bidirectional rotation structure according to claim 2, characterized in that: An inner circumferential ring is arranged between the outer peripheral wall of the valve core and the active rotating body; the upper end surface of the inner circumferential ring abuts against the lower end surface of the first driven rotating body; the lower end surface of the inner circumferential ring abuts against the upper end surface of the second driven rotating body.
4. The iris valve with a bidirectional rotation structure according to claim 3, characterized in that: The lower end of the feed end cover is fixedly connected with a first limiting ring and a second limiting ring; the inner walls of the first limiting ring and the second limiting ring are both close to the outer peripheral wall of the first driven rotating body.
5. The iris valve with a bidirectional rotation structure according to claim 4, characterized in that: The lower end of the second limiting ring is detachably fixedly connected to a shell; the shell is fixedly connected to the shell of the rotary drive source; the lower end of the shell is close to the valve core on one side close to the outer peripheral wall of the second driven rotating body; the upper end of the discharge end cover is fixedly connected to a third limiting ring; the inner wall of the third limiting ring is close to the outer peripheral wall of the second driven rotating body.
6. The iris valve with a bidirectional rotation structure according to claim 5, characterized in that: The end face of the rotary drive source away from the valve core is fixedly connected to a limiting mechanism; the limiting mechanism includes a limiting base, a first limiting rotating body, a second limiting rotating body and a limiting strip; the limiting base is fixed to the end face of the rotary drive source; the first limiting rotating body is drivingly connected to the rotary drive source; the second limiting rotating body is rotationally connected to the first limiting rotating body.
7. The iris valve with a bidirectional rotation structure according to claim 6, characterized in that: There are two limit bars; the two limit bars are placed on one side of the second limit rotating body and are fixedly connected to the limit base, and the limit base is provided with a plurality of mounting holes to adjust the rotation angle of the second limit rotating body to facilitate the control of the tightness of the valve core when it is closed; the second limit rotating body is fan-shaped; the second limit rotating body has a first limit surface and a second limit surface.
8. The iris valve with a bidirectional rotation structure according to claim 7, characterized in that: When the valve core is fully opened, the first limiting surface or the second limiting surface abuts against one of the limiting strips; when the valve core is fully closed, the second limiting surface or the first limiting surface abuts against the other of the limiting strips.
9. The iris valve with a bidirectional rotation structure according to claim 8, characterized in that: The limit strip is made of brass; the first limit ring, the second limit ring, the third limit ring, the first lock end cover and the second lock end cover are all made of polytetrafluoroethylene.