Pneumatic four-way distributing valve

Abstract

The utility model discloses a pneumatic four-way material distributing valve which comprises a valve body, two valve plate assemblies are arranged in the valve body, and each valve plate assembly is provided with rotating power by a driving mechanism. The top of the valve body is provided with a feeding channel, the bottom of the valve body is provided with a first discharging channel, a second discharging channel and a third discharging channel, the feeding channel, the first discharging channel, the second discharging channel and the third discharging channel are communicated with one another, the second discharging channel is located between the first discharging channel and the third discharging channel, and the third discharging channel is located between the first discharging channel and the third discharging channel. The two valve plate assemblies are located above the second discharging channel. The utility model provides a pneumatic four-way material distributing valve which is suitable for a material distributing valve with a structure of a plurality of valve plates, the valve plates can be conveniently and quickly replaced after being abraded, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to a pneumatic four-way distributing valve, which belongs to the technical field of distributing valves. Background Art

[0002] The four-way dividing valve is an ideal device for controlling the rapid reversing of materials, which is widely used in the construction material conveying system. The four-way dividing valve is mainly composed of a valve body, a valve plate, a driving mechanism, etc. A feed channel and three discharge channels are provided in the valve body. Two valve plates are installed in the valve body. The driving mechanism drives the rotation of the two valve plates to control the feed channel and the opening and closing of the three discharge channels for dividing the materials, thereby realizing the dividing operation.

[0003] However, in the construction industry, the long-term use of dispensing valves can easily cause wear and tear on components such as the valve body and valve plate due to building materials (such as mortar and dry sand). This can lead to the dispensing valve not functioning properly and shorten the service life of three-way dispensing valves. Since four-way dispensing valves are equipped with two valve plates, replacing the valve plates is a labor-intensive process, which inconveniences installation and maintenance, and reduces work efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a pneumatic four-way distributing valve which is suitable for use with distributing valves having a multi-valve plate structure, facilitates quick replacement of the valve plate after wear, and extends the service life of the equipment.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A pneumatic four-way dispensing valve comprises a valve body, wherein two valve plate assemblies are arranged in the valve body, and each valve plate assembly is driven by a driving mechanism to provide rotational power;

[0007] The top of the valve body is provided with a feed channel, and the bottom of the valve body is provided with a first discharge channel, a second discharge channel and a third discharge channel. The feed channel, the first discharge channel, the second discharge channel and the third discharge channel are interconnected, the second discharge channel is located between the first discharge channel and the third discharge channel, and the two valve plate assemblies are located above the second discharge channel;

[0008] The valve plate assembly includes a valve plate, a shaft sleeve, a bearing seat and a short shaft. The bottom of the valve plate is connected to the shaft sleeve. A short shaft is respectively inserted into both ends of the shaft sleeve. The two short shafts are fastened to the shaft sleeve by screws. The bearing seat is fixed to the side wall of the valve body by screws. The short shaft is rotatably connected to the bearing seat. The driving mechanism is connected to any one of the two short shafts.

[0009] A wear-resistant plate is detachably connected to the inner wall of the valve body.

[0010] Furthermore, the driving mechanism includes a cylinder and a rocker arm, the cylinder is fixed on the side wall of the valve body, one end of the rocker arm is hinged to the piston rod of the cylinder, and the other end of the rocker arm is connected to any one of the two short shafts.

[0011] Furthermore, one end of the short shaft connected to the other end of the rocker arm is a hexagonal structure, and the other end of the rocker arm is provided with a hexagonal hole that cooperates with the hexagonal structure. A threaded hole is provided in the hexagonal structure, and the other end of the rocker arm is fastened to one end of the short shaft by a screw.

[0012] Furthermore, the wear-resistant plate is fixed to the inner wall of the valve body by screws.

[0013] Furthermore, a shock-absorbing pad is provided at the end of the valve plate.

[0014] Furthermore, reinforcing ribs are provided between the shaft sleeve and the valve plate.

[0015] By adopting the above technical solution, the valve plate of the utility model adopts a detachable structure mounted on two short shafts. Due to the short length of the short shafts, the replacement and installation of the valve plate are faster, which is particularly suitable for use in material distribution valves with multiple valve plates, and facilitates the rapid replacement of the valve plate after wear. The utility model installs a wear-resistant plate on the inner wall of the valve body in a detachable manner to avoid direct contact between the building materials and the valve body, preventing the valve body from being damaged due to wear. After the wear-resistant plate is damaged, it can be directly replaced, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the pneumatic four-way dispensing valve of the present utility model;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 for Figure 2 AA section view;

[0019] Figure 4 This is a schematic diagram of the internal structure of the pneumatic four-way dispensing valve of the present utility model;

[0020] Figure 5 This is a schematic structural diagram of a short shaft connected to a rocker arm of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the rocker arm of the present utility model. DETAILED DESCRIPTION

[0022] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0023] like Figures 1 to 6 As shown, this embodiment provides a pneumatic four-way dispensing valve, which includes a valve body 1, two valve plate assemblies are arranged in the valve body 1, and each valve plate assembly is powered by a driving mechanism. Figure 1 、 3 As shown, a feed channel 11 is provided at the top of the valve body 1, and a first discharge channel 12, a second discharge channel 13, and a third discharge channel 14 are provided at the bottom of the valve body 1. The feed channel 11, the first discharge channel 12, the second discharge channel 13, and the third discharge channel 14 are interconnected. The second discharge channel 13 is located between the first discharge channel 12 and the third discharge channel 14. The two valve plate assemblies are located above the second discharge channel 13. Two sets of driving mechanisms respectively drive the two valve plate assemblies to rotate, thereby controlling which discharge channel the building material is discharged from.

[0024] like Figure 3 、 4 As shown, the valve plate assembly of this embodiment includes a valve plate 21, a sleeve 22, a bearing seat 23, and a short shaft 24. The bottom of the valve plate 21 is welded to the sleeve 22, and a reinforcing rib 6 is welded between the sleeve 22 and the valve plate 21 to strengthen the connection strength between the sleeve 22 and the valve plate 21. A short shaft 24 is inserted into each end of the sleeve 22. The two short shafts 24 are fastened to the sleeve 22 by screws. The bearing seat 23 is fixed to the side wall of the valve body 1 by screws. A bearing 25 is mounted on the short shaft 24 and is rotatably connected to the bearing seat 23. The drive mechanism is connected to either of the two short shafts 24. If the valve plate 21 wears out due to friction from the building materials after long-term use and needs to be replaced, the fastening screws of the sleeve 22 and the short shaft 24 can be removed, and the fastening screws of the drive mechanism and the short shaft 24 can be loosened. Then, the screws on the two bearing seats 23 can be loosened, and the short shaft 24 can be pulled out and the valve plate 21 can be replaced. Since the two ends of the shaft sleeve 22 of the valve plate 21 are respectively screwed to the two short shafts 24, the short shafts 24 are shorter and can be pulled out from the two ends of the shaft sleeve 22 more quickly, and are also very convenient to install. For the structure of the two valve plates 21 in the four-way valve, installation and replacement are more time-saving and labor-saving.

[0025] like Figure 1 、 4 As shown, the driving mechanism of this embodiment includes a cylinder 41 and a rocker arm 42. The cylinder 41 is fixed to the side wall of the valve body 1. One end of the rocker arm 42 is hinged to the piston rod of the cylinder 41, and the other end of the rocker arm 42 is fixedly connected to one end of the short shaft 24. Figures 4-6 As shown, one end of the short shaft 24 connected to the rocker arm 42 is a hexagonal structure, and the other end of the rocker arm 42 is provided with a hexagonal hole 421 that matches the hexagonal structure. The hexagonal structure is provided with a threaded hole 241. The other end of the rocker arm 42 is fastened to one end of the short shaft 24 by a screw. Figure 3 Take the state of the two valve plates 21 in FIG1 as an example: at this time, the right valve plate 21 closes the third discharge channel 14, while the left valve plate 21 closes the second discharge channel 13, and the building materials are discharged from the first discharge channel 12. According to actual production needs, the valve plates 21 are rotated by the extension and contraction of the cylinder 41 to achieve the material separation operation.

[0026] like Figure 4 As shown, a wear-resistant plate 3 is detachably attached to the inner wall of the valve body 1 of this embodiment. Specifically, the wear-resistant plate 3 is fixed to the inner wall of the valve body 1 by screws. During normal use, building materials come into contact and rub against the wear-resistant plate 3. The wear-resistant plate 3 is made of manganese plate, which is strong and durable, effectively extending the service life of the valve body 1. If the wear-resistant plate 3 is damaged due to long-term use, it can be replaced quickly and conveniently by simply loosening the screws.

[0027] like Figure 3 、 4 As shown, the end of the valve plate 21 of this embodiment is provided with a shock-absorbing pad 5. The shock-absorbing pad 5 is made of PU and acts as a shock absorber when the valve plate 21 contacts the inner wall of the valve body 1. At the same time, the shock-absorbing pad 5 is installed at the end of the valve plate 21 to provide a sealing effect, preventing powder from leaking from the end of the valve plate 21 during feeding.

[0028] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pneumatic four-way dispensing valve, characterized by: It comprises a valve body (1), wherein two valve plate assemblies are arranged in the valve body (1), and each valve plate assembly is driven by a driving mechanism to provide rotational power; The top of the valve body (1) is provided with a feed channel (11), and the bottom of the valve body (1) is provided with a first discharge channel (12), a second discharge channel (13) and a third discharge channel (14); the feed channel (11), the first discharge channel (12), the second discharge channel (13) and the third discharge channel (14) are interconnected, the second discharge channel (13) is located between the first discharge channel (12) and the third discharge channel (14), and the two valve plate assemblies are located above the second discharge channel (13); The valve plate assembly includes a valve plate (21), a shaft sleeve (22), a bearing seat (23) and a short shaft (24), the bottom of the valve plate (21) is connected to the shaft sleeve (22), and a short shaft (24) is respectively inserted at both ends of the shaft sleeve (22), the two short shafts (24) are fastened to the shaft sleeve (22) by screws, the bearing seat (23) is fixed to the side wall of the valve body (1) by screws, the short shaft (24) is rotatably connected to the bearing seat (23), and the driving mechanism is connected to any one of the two short shafts (24); A wear-resistant plate (3) is detachably connected to the inner wall of the valve body (1).

2. The pneumatic four-way dispensing valve according to claim 1, characterized in that: The driving mechanism comprises a cylinder (41) and a rocker arm (42), wherein the cylinder (41) is fixed to the side wall of the valve body (1), one end of the rocker arm (42) is hinged to the piston rod of the cylinder (41), and the other end of the rocker arm (42) is connected to any one of the two short shafts (24).

3. The pneumatic four-way dispensing valve according to claim 2, characterized in that: One end of the short shaft (24) connected to the other end of the rocker arm (42) is a hexagonal structure, and the other end of the rocker arm (42) is provided with a hexagonal hole (421) that matches the hexagonal structure. A threaded hole (241) is provided in the hexagonal structure, and the other end of the rocker arm (42) is fastened to one end of the short shaft (24) by a screw.

4. The pneumatic four-way dispensing valve according to claim 1, characterized in that: The wear-resistant plate (3) is fixed to the inner wall of the valve body (1) by screws.

5. The pneumatic four-way dispensing valve according to claim 1, characterized in that: A shock-absorbing pad (5) is provided at the end of the valve plate (21).

6. The pneumatic four-way dispensing valve according to claim 1, characterized in that: A reinforcing rib (6) is provided between the shaft sleeve (22) and the valve plate (21).

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