Automatic bar valve

Abstract

The utility model relates to the technical field of bar valves, and discloses an automatic bar valve which comprises a valve frame, a bar, a connecting plate and a driving device, one end of the bar is located in the valve frame, the other end of the bar is located outside the valve frame and connected with the connecting plate, and the driving device is located on the side, facing the valve frame, of the connecting plate. The driving device drives the bar to move bidirectionally by pushing and pulling the connecting plate, so that the opening and closing state of the bar valve is changed. By adjusting the position of the driving device in the bar valve, the structure of the bar valve is optimized on the whole, and the necessary operation space needed by the bar valve in the bar movement direction is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rod valves, in particular to an automatic rod valve. Background Art

[0002] Rod valves are mainly used in the conveying control and feeding of small and medium-sized solid and block materials in the building materials, mining, metallurgy and other industries, and are particularly suitable for the control of materials ≤50mm.

[0003] The rod valve can adjust the particle size of the passing material at any time. Its working principle is to use the material particle size greater than the gap distance and the internal friction between the materials to block the material, and by pulling out a certain number of rods to form a certain width of the empty channel for the material to pass through.

[0004] The driving device of the existing automatic rod valve is usually located in the direction of the rod movement, which will cause the area in the direction of the rod movement to be large, while the area in the direction perpendicular to the rod movement is relatively small, that is, the valve is slender as a whole. If the rod valve is too long in one direction, it will increase the space required for its operation as a whole. Utility Model Content

[0005] The utility model aims to solve the problem of large floor space caused by the slender overall structure of the automatic rod valve in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an automatic rod valve, including a valve frame, a rod, a connecting plate and a driving device, one end of the rod is located in the valve frame, the other end of the rod is located outside the valve frame and connected to the connecting plate, the driving device is located on the side of the connecting plate facing the valve frame, the driving device drives the rod to move in both directions by pushing and pulling the connecting plate, thereby changing the opening and closing state of the automatic rod valve.

[0007] Optionally, the rods include a plurality of first rods arranged side by side and a plurality of second rods arranged side by side, the connecting plate includes a first connecting plate and a second connecting plate, the frames of the valve frame opposite to each other are respectively provided with a first through hole and a second through hole, the first rod is movably arranged in the first through hole, the second rod is movably arranged in the second through hole, the end of the first rod located outside the valve frame is connected to the first connecting plate, and the end of the second rod located outside the valve frame is connected to the second connecting plate.

[0008] Optionally, the valve frame is a square frame.

[0009] Optionally, the driving device includes a first driving device and a second driving device, and the first driving device and the second driving device are arranged on the same frame of the valve frame, and the frame on which the first driving device and the second driving device are arranged are adjacent to two opposite frames respectively provided with the first through hole and the second through hole.

[0010] Optionally, the driving device also includes a third driving device and a fourth driving device, the third driving device and the first driving device are respectively connected to the two ends of the first connecting plate, the fourth driving device and the second driving device are respectively connected to the two ends of the second connecting plate, the third driving device and the first driving device work synchronously, and the fourth driving device and the second driving device work synchronously.

[0011] Optionally, the rod is threadedly connected to the connecting plate.

[0012] Optionally, the driving device is an electric push rod.

[0013] Optionally, rubber sleeves are provided at the first through hole and the second through hole, and the rubber sleeves are used to fill the gap between the through hole and the rod.

[0014] Optionally, the rod valve further comprises a cleaning device, which is arranged on the inner side wall of the valve frame.

[0015] Optionally, the cleaning device includes a mounting plate and a brush arranged on the mounting plate, and an extension direction of the mounting plate is perpendicular to a movement direction of the rod.

[0016] Through the above technical solution, the setting position of the driving device is optimized, and thus the structure of the rod valve is optimized as a whole, effectively reducing the necessary operating space required by the rod valve in the direction of rod movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top view of the automatic rod valve of some embodiments of the present scheme;

[0018] Figure 2 It is a schematic diagram of the top view of the automatic rod valve of some embodiments of the present scheme;

[0019] Figure 3 It is a schematic diagram of the top view of the automatic rod valve of some embodiments of the present scheme;

[0020] Figure 4 It is a front view structural schematic diagram of the automatic rod valve of some embodiments of the present scheme.

[0021] Description of Reference Numerals

[0022] 1-valve frame; 2-rod; 21-first rod; 22-second rod; 3-connecting plate; 31-first connecting plate; 32-second connecting plate; 4-driving device; 41-first driving device; 42-second driving device; 43-third driving device; 44-fourth driving device; 5-cleaning device; 51-mounting plate; 52-brush DETAILED DESCRIPTION

[0023] In the present invention, unless otherwise stated, directional words such as "up, down, left, right" are usually understood in conjunction with the directions shown in the drawings and actual applications, and "inside and outside" refer to the inside and outside of the component outline.

[0024] like Figure 1-4 As shown, the utility model discloses an automatic rod valve, including a valve frame 1, a rod 2, a connecting plate 3 and a driving device 4, one end of the rod 2 is located in the valve frame 1, the other end of the rod 2 is located outside the valve frame 1 and connected to the connecting plate 3, the driving device 4 is located on the side of the connecting plate 3 facing the valve frame 1, and the driving device 4 drives the rod 2 to move in both directions by pushing and pulling the connecting plate 3, thereby changing the opening and closing state of the automatic rod valve.

[0025] Specifically, the valve frame 1 is an important part of the rod valve, and together with the rod 2, it constitutes the main working part of the rod valve. The valve frame 1 can be welded from high-quality steel to have good rigidity and not easy to deform. The steel-welded valve frame 1 has a long service life and basically does not require maintenance.

[0026] Since the rod 2 is in direct contact with the material and the valve frame 1, the strength and rigidity of the rod 2 must be considered to withstand the impact and wear of the material while maintaining the stability of the structure. In the forming process of the rod 2, wear-resistant and corrosion-resistant materials such as stainless steel, carbon steel or other alloys can be preferably selected to adapt to different working environments and material characteristics. The rod 2 is usually in the shape of a long strip and has a uniform cross-section. The cross-section can be circular, triangular, square, regular hexagonal, etc., and the selection can be made according to the actual situation. In general, the size (length, diameter or width) of the rod 2 is determined according to the specifications of the rod valve and the size of the material to be controlled. Of course, in addition to directly selecting the existing rod 2, in certain cases, the shape, size and material of the rod 2 can also be customized according to specific process requirements, that is, the rod 2 can be a non-standard part. The number of rods 2 is at least one and can be movably plugged into the valve frame 1. Pulling out the rod 2 can form a gap to allow the material to pass through; inserting the rod 2 can prevent the flow of the material.

[0027] One end of the rod 2 that is always located outside the valve frame 1 is fixedly connected to the connecting plate 3. The connecting plate 3 is used to support the rod 2 on one hand, and is used as an intermediate piece between the driving device 4 and the rod 2 (the rod 2 is the driven object) on the other hand. The driving device 4 drives the connecting plate 3 to indirectly drive the rod 2 that moves synchronously with the connecting plate 3. When there are multiple rods 2, multiple rods 2 can be arranged in parallel on the connecting plate 3 at intervals (because the other ends of the rods 2 are all facing the valve frame 1, so the multiple rods 2 are arranged on the same side of the connecting plate 3, that is, the side of the connecting plate 3 facing the valve frame 1), together forming a parallel fence that prevents the flow of materials. Furthermore, the distances between the multiple rods 2 are equal.

[0028] The utility model does not limit the power source of the driving device 4, and an electric driving device, such as an electric cylinder, a hydraulic driving device, such as a hydraulic cylinder, or a pneumatic driving device, such as a cylinder, can be selected. The driving device 4 can directly contact the connecting plate 3 and drive it to reciprocate in a straight line; the driving device 4 can also transmit power to the connecting plate 3 indirectly, for example, the connecting plate 3 is made of magnetic material, and the driving device 4 is an electromagnetic driving device. The driving device 4 is located on the side of the connecting plate 3 facing the valve frame 1 to avoid increasing the necessary operating space of the rod valve in the moving direction of the rod 2.

[0029] Furthermore, in order to cope with scenarios with more complex material control requirements, the rod 2 in the rod valve can be set as a double layer, and the upper and lower rods 2 can work independently or collaboratively to more accurately control material flow and can perform hierarchical control to meet higher material control requirements.

[0030] In actual operation, the rod valve is generally a normally open type, and the material is in a flowing state. When it is cut off or adjusted according to the working conditions, the rod 2 is inserted to stop or slow down the material flow. In other words, the opening and closing state of the rod valve should be adjusted according to the working conditions. The greater the opening degree, the smaller the proportion of the rod 2 in the valve frame. Correspondingly, the larger the flow cross-sectional area of ​​the rod valve, the weaker the blocking ability to the material, and vice versa.

[0031] When the rod valve is in a fully closed state, the distance between the connecting plate 3 and the valve frame 1 is the smallest and the rod 2 is almost entirely located inside the valve frame; when the rod valve is in a fully open state, the distance between the connecting plate 3 and the valve frame 1 is the largest and the rod 2 is almost entirely located outside the valve frame.

[0032] Working principle of the rod valve: the flow of materials is controlled by inserting and withdrawing the rod 2. When the rod 2 is inserted into the valve frame, parallel grid plates are formed to block the materials; when the rod 2 is withdrawn, a gap is formed to allow the materials to pass through.

[0033] Optionally, the rod 2 includes a plurality of first rods 21 arranged side by side and a plurality of second rods 22 arranged side by side, the connecting plate 3 includes a first connecting plate 31 and a second connecting plate 32, and the frames of the valve frame 1 opposite to each other are respectively provided with a first through hole and a second through hole, the first rod 21 is movably arranged in the first through hole, the second rod 22 is movably arranged in the second through hole, the end of the first rod 21 located outside the valve frame 1 is connected to the first connecting plate 31, and the end of the second rod 22 located outside the valve frame 1 is connected to the second connecting plate 32.

[0034] Specifically, the number of the first rods 21 and the second rods 22 are equal and they are arranged in a one-to-one opposite correspondence. The rod valve with the rods 2 arranged in this way, i.e., the split rod valve, can more quickly adjust the flow and blocking of materials, is more convenient and flexible in operation, and is not prone to material jamming. The reason is that when the first rods 21 and the second rods 22 move in opposite directions at the same time, under the premise that the speeds of all the rods 2 are the same and unchanged, the opening or closing efficiency of the split rod valve is twice that of the non-split rod valve (a rod valve with only rods 2 moving in a single direction).

[0035] Optionally, the valve frame 1 is a square frame.

[0036] The square valve frame 1 can be easily aligned with other components or structures, so as to make more effective use of space, and is particularly suitable for situations where space is limited. Specifically, the square valve frame 1 has two sets of relative frames, one set of relative frames is perpendicular to the rod 2, and the other set of relative frames is parallel to the rod 2. The set of frames parallel to the rod 2 can be set close to the outermost rod 2, thereby minimizing the footprint of the rod valve in the direction perpendicular to the movement direction of the rod 2. At the same time, by reducing the gap in the valve frame 1, the sealing of the rod valve is further enhanced, which can effectively prevent leakage.

[0037] In addition, there are many other advantages to choosing a square valve frame 1, such as: compatibility with other square or rectangular system components, such as feed pipes or other valve accessories, which helps to simplify system integration; providing better structural stability, because the symmetry of the square valve frame 1 can evenly distribute the load and reduce twisting or bending; the regular shape can not only be manufactured simply and quickly through standardized manufacturing processes, but also can more evenly distribute the rods 2, thereby more effectively controlling the passage of materials and providing more precise material flow control.

[0038] Optionally, the driving device 4 includes a first driving device 41 and a second driving device 42, and the first driving device 41 and the second driving device 42 are arranged on the same frame of the valve frame 1, and the frame on which the first driving device 41 and the second driving device 42 are arranged are adjacent to two opposite frames respectively provided with a first through hole and a second through hole.

[0039] The purpose of arranging the first drive device 41 and the second drive device 42 on the same frame of the valve frame 1 is to further reduce the space occupied by the rod valve. Of course, the first drive device 41 and the second drive device 42 can also be arranged on different frames, for example, the first drive device 41 is arranged on a frame adjacent to the relative frames with through holes, and the second drive device 42 is arranged on another frame adjacent to the relative frames with through holes, and the frame with the first drive device 41 and the frame with the second drive device 42 are relative frames. The two ways of arranging the drive device 4 have their own advantages and disadvantages. Although the latter arrangement method requires more space to be reserved for accommodating the first drive device 41 or the second drive device 42, it can ensure that the valve frame 1 is evenly stressed when supporting the first drive device 41 and the second drive device 42, and the overall structure is more stable.

[0040] Of course, the drive device 4 does not have to be arranged on the frame of the valve frame 1, and the drive device 4 can also be arranged on an external structure, for example, the drive device 4 is arranged at the outlet of the silo (the silo and the rod valve usually work together in industrial production).

[0041] Optionally, the driving device 4 also includes a third driving device 43 and a fourth driving device 44. The third driving device 43 and the first driving device 41 are respectively connected to the two ends of the first connecting plate 31, and the fourth driving device 44 and the second driving device 42 are respectively connected to the two ends of the second connecting plate 32. The third driving device 43 and the first driving device 41 work synchronously, and the fourth driving device 44 and the second driving device 42 work synchronously.

[0042] The two driving devices 4 simultaneously apply force to the two ends of the connecting plate 3 to avoid the large local stress generated when only one end of the connecting plate 3 is subjected to force, evenly distribute the stress, reduce the deformation, bending and shaking of the connecting plate 3, and improve the bearing capacity and stability of the connecting plate 3.

[0043] Specifically, the third driving device 43 and the first driving device 41 are used to jointly drive the first connecting plate 31 and the first rod 21 connected thereto; the fourth driving device 44 and the second driving device 42 are used to jointly drive the second connecting plate 32 and the second rod 22 connected thereto. Furthermore, the four driving devices 4 can work synchronously to achieve stable and efficient opening and closing of the rod valve and accurately control the flow of materials.

[0044] Optionally, the rod 2 is threadedly connected to the connecting plate 3 .

[0045] The purpose of the threaded connection is mainly to facilitate the removal of the rod 2 from the connecting plate 3 or the installation of the rod 2 to the connecting plate 3. Generally, the rod 2 needs to be removed or installed in two cases. The first case is to selectively remove or install a part of the rod 2 before the operation to increase or reduce the gap between adjacent rods 2 according to different specific working conditions (mainly different material sizes); the second case is to regularly remove the rod 2 to check the wear and tear, replace or repair the removed rod 2 when necessary, and reinstall the qualified rod 2 to the connecting plate after all the processing is completed to ensure the normal operation and sealing performance of the rod valve. In short, the threaded connection between the rod 2 and the connecting plate 3 can adapt to different working conditions and facilitate the maintenance of the rod valve.

[0046] Optionally, the driving device 4 is an electric push rod.

[0047] Specifically, the electric push rod is small in size, easy to install and can achieve accurate control of the position of the rod 2. The electric push rod also has good self-locking performance, which can keep the rod 2 and the connecting plate 3 stable when stopped, without the need for an additional braking system.

[0048] Optionally, rubber sleeves are provided at the first through hole and the second through hole, and the rubber sleeves are used to fill the gap between the through hole and the rod 2 .

[0049] Specifically, the rubber sleeve is used to enhance the sealing performance of the rod valve and reduce the leakage of materials through the through hole, thereby generating dust and the like.

[0050] Optionally, a cleaning device 5 is further included, and the cleaning device 5 is arranged on the inner wall of the valve frame 1.

[0051] The cleaning device 5 is mainly used to prevent materials from accumulating in the rod valve. The cleaning device 5 can effectively remove materials attached to the rod 2 and prevent materials from accumulating on the surface of the rod 2 for a long time. If too much material accumulates on the surface of the rod 2, the operation of the rod valve may be obstructed at best, or the rod valve may not be closed tightly or may be difficult to open at worst. In addition, the cleaning device 5 can also reduce manual intervention, further improve the automation of the rod valve, reduce the pollution of the working environment by scattered materials, keep the working area clean, etc.

[0052] Specifically, the cleaning device 5 is supported on the inner side wall of the valve frame 1 and is located above and / or below the rod 2 , and the cleaning device 5 directly acts on the surface of the rod 2 .

[0053] Optionally, the cleaning device 5 includes a mounting plate 51 and a brush 52 disposed on the mounting plate 51 , and an extending direction of the mounting plate 51 is perpendicular to a moving direction of the rod 2 .

[0054] Specifically, when the cleaning device 5 is arranged above the rod, the brush 52 is arranged at the bottom of the mounting plate 51 and faces the upper surface of the rod 2; when the cleaning device 5 is arranged below the rod 2, the brush 52 is arranged at the top of the mounting plate 51 and faces the lower surface of the rod 2. Both ends of the mounting plate 51 are respectively fixed to the inner side walls of a group of opposite frames of the valve frame 1 (the other group of opposite frames has through holes and is inserted with the rod 2).

[0055] Furthermore, the mounting plate 51 may be arranged as close to the connecting plate 3 as possible, so that the surface of the rod 2 can be cleaned to the greatest extent by the brush 52 when the valve is opened or closed.

[0056] Furthermore, in the split rod valve, a total of four cleaning devices 5 may be provided, with one cleaning device 5 provided above and below the first rod 21 , and one cleaning device 5 provided above and below the second rod 22 .

[0057] In some embodiments, the end of the rod 2 facing the valve frame 1 may be a pointed end, and the tip of the rod 2 is usually designed to be sharp or beveled to facilitate insertion and extraction from the through hole in the valve frame 1 and reduce friction during insertion and extraction.

[0058] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. An automatic rod valve, characterized in that: The automatic rod valve comprises a valve frame (1), a rod (2), a connecting plate (3) and a driving device (4); one end of the rod (2) is located inside the valve frame (1), the other end of the rod (2) is located outside the valve frame (1) and connected to the connecting plate (3); the driving device (4) is located on the side of the connecting plate (3) facing the valve frame (1); the driving device (4) drives the rod (2) to move in both directions by pushing and pulling the connecting plate (3), thereby changing the open and closed state of the automatic rod valve.

2. The automatic rod valve according to claim 1, characterized in that: The rods (2) include a plurality of first rods (21) arranged side by side and a plurality of second rods (22) arranged side by side; the connecting plate (3) includes a first connecting plate (31) and a second connecting plate (32); the frames of the valve frame (1) opposite to each other are respectively provided with a first through hole and a second through hole; the first rod (21) is movably arranged in the first through hole; the second rod (22) is movably arranged in the second through hole; an end of the first rod (21) located outside the valve frame (1) is connected to the first connecting plate (31); an end of the second rod (22) located outside the valve frame (1) is connected to the second connecting plate (32).

3. The automatic rod valve according to claim 2, characterized in that: The valve frame (1) is a square frame.

4. The automatic rod valve according to claim 3, characterized in that: The driving device (4) comprises a first driving device (41) and a second driving device (42), wherein the first driving device (41) and the second driving device (42) are arranged on the same frame of the valve frame (1), and the frame on which the first driving device (41) and the second driving device (42) are arranged are adjacent to two opposite frames on which the first through hole and the second through hole are respectively opened.

5. The automatic rod valve according to claim 4, characterized in that: The driving device further comprises a third driving device (43) and a fourth driving device (44); the third driving device (43) and the first driving device (41) are respectively connected to the two ends of the first connecting plate (31); the fourth driving device and the second driving device are respectively connected to the two ends of the second connecting plate (32); the third driving device (43) and the first driving device (41) work synchronously; and the fourth driving device (44) and the second driving device (42) work synchronously.

6. The automatic rod valve according to claim 1, characterized in that: The rod (2) is threadedly connected to the connecting plate (3).

7. The automatic rod valve according to claim 1, characterized in that: The driving device (4) is an electric push rod.

8. The automatic rod valve according to claim 2, characterized in that: The first through hole and the second through hole are provided with rubber sleeves, and the rubber sleeves are used to fill the gap between the through hole and the rod (2).

9. The automatic rod valve according to claim 1, characterized in that: It also comprises a cleaning device (5), which is arranged on the inner side wall of the valve frame (1).

10. The automatic rod valve according to claim 9, characterized in that: The cleaning device (5) comprises a mounting plate (51) and a brush (52) arranged on the mounting plate (51); the extending direction of the mounting plate (51) is perpendicular to the moving direction of the rod (2).

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