Low-pressure cylinder double-raft heat supply butterfly valve
By using a double raft structure and buffer block design, the problem of short service life of single raft butterfly valves is solved, achieving protection of the raft and extension of service life.
Patent Information
- Application Number
- CN202520143158.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing single-raft butterfly valves have a short service life, are prone to damage, and cannot effectively reduce the impact force of fluid on the raft.
It adopts a double raft structure, equipped with pneumatic actuators and buffer blocks. The pneumatic actuators drive the raft assembly to rotate, and the buffer blocks change the fluid flow direction to reduce the impact force.
It improves the service life of the butterfly valve, prevents damage to the valve plate, is easy to use, and reduces the impact force of fluid on the valve plate.
Smart Images
Figure CN223595003U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to valve technical field, concretely relates to low pressure cylinder double raft plate heating butterfly valve. BACKGROUND
[0002] The butterfly valve is also called flap valve, and it is a simple structure regulating valve, which can be used for on-off control of low-pressure pipeline medium, and the butterfly valve is often used to control flow rate in the heating pipeline. The existing butterfly valve is mostly single raft plate structure.
[0003] The butterfly valve with single raft plate structure has the following disadvantages: only one raft plate, the raft plate cannot be used continuously after being damaged, the service life is short, the impact force of fluid on the raft plate cannot be reduced, the raft plate is easily damaged, and the service life of the butterfly valve is affected. INVENTION CONTENTS
[0004] The utility model discloses a low pressure cylinder double raft plate heating butterfly valve, and solves the technical problem of low service life of the existing heating butterfly valve.
[0005] In order to achieve the above purpose, the utility model provides a low pressure cylinder double raft plate heating butterfly valve, which comprises a pneumatic actuator, a connecting seat, a connecting flange and a raft plate assembly.
[0006] The pneumatic actuator is fixedly arranged at the top of the connecting seat, the bottom of the connecting seat is fixedly connected with the connecting flange, and the inside of the connecting flange is rotatably connected with the raft plate assembly.
[0007] The raft plate assembly comprises an upper rotating shaft, a first raft plate, a second raft plate and a lower rotating shaft, the upper rotating shaft is in transmission connection with the output shaft of the pneumatic actuator, the upper rotating shaft is rotatably connected with the top of the connecting flange, the first raft plate and the second raft plate are arranged side by side, the top of the first raft plate and the top of the second raft plate are fixedly connected with the upper rotating shaft, the bottom of the first raft plate and the bottom of the second raft plate are fixedly connected with the lower rotating shaft, and the lower rotating shaft is rotatably connected with the bottom of the connecting flange.
[0008] Preferably, the connecting seat is a frame structure with open ends and hollow, the top surface and the bottom surface of the connecting seat are both provided with a avoiding hole, the output shaft of the pneumatic actuator and the upper rotating shaft both extend into the connecting seat through the avoiding hole, the output shaft of the pneumatic actuator is inserted into the upper rotating shaft, the output shaft of the pneumatic actuator is integrally formed with a flat key, the upper rotating shaft is provided with a flat key groove, and the flat key is inserted into the flat key groove.
[0009] Preferably, the bottom of the upper rotating shaft and the top of the lower rotating shaft are both fixedly connected with a connecting plate, the connecting plate is arranged in the connecting flange, the connecting plate is provided with two mounting cavities, the first raft plate and the second raft plate are respectively inserted into the mounting cavities and fixedly connected with the mounting cavities.
[0010] Preferably, a plurality of first buffer blocks protruding outward in transverse and arc shape are arranged on one side of the first raft board at equal intervals, and a plurality of second buffer blocks are arranged on the other side of the first raft board at equal intervals, the second buffer blocks are identical in structure to the first buffer blocks, and the second buffer blocks are arranged at intervals of the first buffer blocks.
[0011] Preferably, the second raft board is identical in structure to the first raft board, and the second raft board is arranged at intervals of the first raft board.
[0012] The utility model discloses the obtained beneficial effects are:
[0013] The starting executor can drive the raft board assembly to rotate in the connecting flange, control the opening and closing of the butterfly valve, and does not need manual adjustment, so it is convenient to use. The raft board assembly is of double-raft board structure, and the double-raft board can reduce the impact force of fluid on the raft board compared with single-raft board, so as to protect the raft board, prevent the raft board from being damaged, and prolong the service life of the raft board.
[0014] The first buffer blocks and the second buffer blocks are arranged on the two sides of the first raft board and the two sides of the second raft board, the buffer blocks can change the flow direction of fluid, further reduce the impact force of fluid on the first raft board and the second raft board, further prevent the raft board from being damaged, and prolong the service life of the butterfly valve. BRIEF DESCRIPTION OF DRAWINGS
[0015] The utility model will be further explained in detail in combination with the drawings and specific embodiments.
[0016] Figure 1 is a schematic view of a low-pressure cylinder double-raft board heating butterfly valve disclosed by the specific embodiment of the utility model, and
[0017] Figure 2 is Figure 1 is an enlarged view of A part in figure 6;
[0018] Figure 3 is an exploded schematic view of a low-pressure cylinder double-raft board heating butterfly valve disclosed by the specific embodiment of the utility model, and
[0019] Figure 4 is a schematic view of a connecting flange disclosed by the specific embodiment of the utility model, and
[0020] Figure 5 is a schematic view of a raft board assembly disclosed by the specific embodiment of the utility model, and
[0021] Figure 6 is another schematic view of a raft board assembly disclosed by the specific embodiment of the utility model.
[0022] EXPLANATION OF REFERENCE NUMERALS:
[0023] 1, pneumatic actuator; 11, key; 2, connecting seat; 3, connecting flange; 4, raft assembly; 41, upper rotating shaft; 411, key groove; 42, first raft; 421, first buffer block; 422, second buffer block; 43, second raft; 44, lower rotating shaft; 45, connecting plate. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the utility model, but the utility model can also be implemented in other manners different from those described herein, and those skilled in the art can make similar generalization without departing from the connotation of the utility model, therefore, the utility model is not limited to the specific embodiments disclosed below.
[0025] As shown in Figures 1-6 The utility model discloses a low pressure cylinder double raft heat supply butterfly valve, including pneumatic actuator 1, connecting seat 2, connecting flange 3 and raft assembly 4. Pneumatic actuator 1 is the execution device that is driven to open and close or adjust valve with gas pressure, is used to control the rotation of raft assembly 4, and pneumatic actuator 1 is conventional technology, and no longer repeats.
[0026] As an embodiment of connecting seat 2, connecting seat 2 is the frame structure of the hollow of the open in front and back two ends, and the top surface of connecting seat 2 is abutted with pneumatic actuator 1 and is fixedly connected through bolt, and the bottom surface of connecting seat 2 is abutted with connecting flange 3 and is fixedly connected through bolt. The top surface and the bottom surface of connecting seat 2 are all provided with avoiding hole. The output shaft of pneumatic actuator 1 extends to connecting seat 2 through the avoiding hole of the top.
[0027] Connecting flange 3 is used for connecting pipeline, and it is more conventional prior art, and no longer repeats.
[0028] The raft assembly 4 is rotatably arranged in the connecting flange 3, and the rotation of the raft assembly 4 can control the opening and closing of the butterfly valve. As an embodiment of the raft assembly 4, the raft assembly 4 comprises an upper rotating shaft 41, a first raft 42, a second raft 43 and a lower rotating shaft 44. The upper rotating shaft 41 passes through the avoiding hole in the bottom surface of the connecting seat 2 and extends into the connecting seat 2. The output shaft of the pneumatic actuator 1 is inserted into the upper rotating shaft 41, and a flat key 11 is integrally formed on the side of the output shaft. The upper rotating shaft 41 is provided with a flat key groove 411, and the flat key 11 is inserted into the flat key groove 411. The middle part of the upper rotating shaft 41 is rotatably and sealingly connected with the top part of the connecting flange 3. The bottom part of the upper rotating shaft 41 is fixedly connected with the top parts of the first raft 42 and the second raft 43. The first raft 42 and the second raft 43 are arranged side by side. The bottom parts of the first raft 42 and the second raft 43 are fixedly connected with the lower rotating shaft 44. The lower rotating shaft 44 is rotatably and sealingly connected with the bottom part of the connecting flange 3.
[0029] As a connecting mode of the upper rotating shaft 41, the first raft 42, the second raft 43 and the lower rotating shaft 44, the bottom part of the upper rotating shaft 41 and the top part of the lower rotating shaft 44 are fixedly connected with a connecting plate 45. The connecting plate 45 is arranged in the connecting flange 3. The connecting plate 45 is provided with two installation cavities. The first raft 42 and the second raft 43 are respectively inserted into the two installation cavities, and the first raft 42 and the second raft 43 are fixedly arranged in the two installation cavities.
[0030] As an embodiment of the first raft 42 and the second raft 43, a plurality of transverse and outward protruding arc-shaped first buffer blocks 421 are arranged at equal intervals on one side of the first raft 42. A plurality of second buffer blocks 422 are arranged at equal intervals on the other side of the first raft 42. The second buffer blocks 422 have the same structure as the first buffer blocks 421, and the second buffer blocks 422 are arranged at intervals of the first buffer blocks 421.
[0031] The second raft 43 has the same structure as the first raft 42. The first raft 42 and the second raft 43 are arranged at intervals. The second buffer blocks 422 on the first raft 42 correspond to the intervals of the first buffer blocks 421 of the second raft 43.
[0032] In use, the butterfly valve is first installed on the heat supply pipeline by the connecting flange 3. The pneumatic actuator 1 is started to drive the raft assembly 4 to rotate and control the opening and closing of the butterfly valve. When the fluid is near the first raft 42 or the second raft 43, the fluid contacts the first buffer blocks 421 and the second buffer blocks 422. The fluid changes the flow direction under the first buffer blocks 421 and the second buffer blocks 422, thereby reducing the impact force of the fluid on the first raft 42 and the second raft 43.
[0033] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
Claims
1. A low pressure cylinder double raft heat supply butterfly valve, characterized in that, It comprises a pneumatic actuator (1), a connecting seat (2), a connecting flange (3) and a raft assembly (4); The pneumatic actuator (1) is fixedly arranged on the top of the connecting seat (2), the bottom of the connecting seat (2) is fixedly connected with the connecting flange (3), and the inside of the connecting flange (3) is rotationally connected with the raft assembly (4); The raft assembly (4) comprises an upper rotating shaft (41), a first raft (42), a second raft (43) and a lower rotating shaft (44), the upper rotating shaft (41) is drivingly connected with the output shaft of the pneumatic actuator (1), the upper rotating shaft (41) is rotationally connected with the top of the connecting flange (3), the first raft (42) and the second raft (43) are arranged side by side, the top of the first raft (42) and the top of the second raft (43) are fixedly connected with the upper rotating shaft (41), the bottom of the first raft (42) and the bottom of the second raft (43) are fixedly connected with the lower rotating shaft (44), and the lower rotating shaft (44) is rotationally connected with the bottom of the connecting flange (3).
2. The low pressure cylinder dual-raft heat feeding butterfly valve according to claim 1, characterized in that, The connecting seat (2) is a frame structure with hollow openings at the front and rear ends, the top surface and the bottom surface of the connecting seat (2) are provided with avoiding holes, the output shaft of the pneumatic actuator (1) and the upper rotating shaft (41) extend into the connecting seat (2) through the avoiding holes, the output shaft of the pneumatic actuator (1) is inserted into the upper rotating shaft (41), the output shaft of the pneumatic actuator (1) is integrally formed with a flat key (11), the upper rotating shaft (41) is provided with a flat key groove (411), and the flat key (11) is inserted into the flat key groove (411).
3. The low pressure cylinder dual-raft heat feeding butterfly valve according to claim 1, characterized in that, The bottom of the upper rotating shaft (41) and the top of the lower rotating shaft (44) are fixedly connected with a connecting plate (45), the connecting plate (45) is arranged in the connecting flange (3), the connecting plate (45) is provided with two mounting cavities, and the first raft (42) and the second raft (43) are respectively inserted into the mounting cavities and fixedly connected with the mounting cavities.
4. The low pressure cylinder dual-raft heat feeding butterfly valve according to claim 3, characterized in that, A plurality of transverse and outwardly protruding arc-shaped first buffer blocks (421) are arranged at equal intervals on one side of the first raft (42), a plurality of second buffer blocks (422) are arranged at equal intervals on the other side of the first raft (42), the second buffer blocks (422) are the same in structure as the first buffer blocks (421), and the second buffer blocks (422) are arranged at intervals between the first buffer blocks (421).
5. The low pressure cylinder dual-raft heat feeding butterfly valve according to claim 4, characterized in that, The second raft (43) is the same in structure as the first raft (42), and the second raft (43) is arranged at intervals from the first raft (42).