Double-pneumatic gate valve of roller press of cement mill

Abstract

The utility model discloses a double pneumatic gate valve of a roller press of a cement mill, which comprises a gate arranged below a feeding hopper and two pneumatic gate valves arranged on two sides of the gate, and each pneumatic gate valve comprises a pneumatic device and a valve plate. The two pneumatic devices are used for driving the two valve plates to be close to each other so as to close the gate or to be far away from each other so as to open the gate; the two valve plates are arranged in an up-down staggered mode, and when the gate is closed, the ends of the two valve plates are overlapped with each other. A supporting piece used for supporting the valve plates is arranged on the gate frame and located below the two valve plates. According to the technical scheme, the double-pneumatic gate valve of the roller press of the cement grinding mill adopts the design of double valve plates, the two valve plates are arranged in a vertically staggered mode, when a gate is closed, the end portions of the valve plates are overlapped, abrasion of the end portions of the valve plates can be effectively reduced, and the design can further provide a good sealing effect and reduce material leakage.

Description

Technical Field

[0001] The utility model relates to a double pneumatic gate valve of a cement mill roller press, belonging to the technical field of cement machinery. Background Art

[0002] A cement mill roller press is a grinding equipment used in the cement production process. By applying high pressure to the material through rollers, the material is squeezed and crushed between the rollers to achieve the purpose of grinding. A pneumatic gate valve is used in the feeding device of the cement roller press, and it is a one-way pneumatic flat gate valve. During use, the front end of the valve plate is severely worn, and this wear usually occurs on the sealing surface or contact surface of the valve plate, resulting in the valve plate being unable to effectively seal. At the same time, when closing the gate valve, as Figure 1 shown, the falling material is extremely easy to get stuck on the edge of the gate track, causing the gate valve to not close tightly, resulting in the feeding device being unable to be closed, and there is a risk of jamming in the circulating bucket elevator system. It is necessary to manually hammer or close the rod valve, which greatly increases the labor intensity of employees and increases the no-load running time of the system. Summary of the Utility Model

[0003] Therefore, the purpose of the utility model is to provide a double pneumatic gate valve for a cement mill roller press, which can effectively avoid severe wear of the front end of the valve plate and improve the sealing performance of the gate valve.

[0004] To achieve the above purpose, a double pneumatic gate valve of a cement mill roller press of the utility model includes a gate arranged below the feeding hopper and two pneumatic gate valves arranged on both sides of the gate. The pneumatic gate valve includes a pneumatic device and a valve plate. The two pneumatic devices are used to drive the two valve plates to approach each other to close the gate or move away from each other to open the gate; the two valve plates are arranged staggered up and down. When the gate is closed, the ends of the two valve plates overlap each other; a support member for supporting the valve plate is arranged on the gate frame and below the two valve plates.

[0005] The valve plate is arranged on the gate frame. One end of the valve plate passes through the side wall of the gate frame and is connected to the pneumatic device. Guide clamping plates are arranged on the outer side of the gate frame and on both sides of the valve plate.

[0006] Sealing gaskets are also arranged on both sides of the valve plate. The guide clamping plates press the sealing gaskets against the outer side wall of the gate frame; a sealing gasket mounting plate and a guide clamping plate mounting seat are arranged on the side of the sealing gasket away from the valve plate. A connecting plate is fixed on the guide clamping plate, and the connecting plate and the guide clamping plate mounting seat are fixed by bolts.

[0007] The gate frame includes an eaves part located at the inner edge.

[0008] An inclined material guide plate is arranged above the valve plate. The upper end of the material guide plate is connected to the eaves part, and the lower end extends towards the center of the gate.

[0009] The support member is a support plate which is vertically arranged. Both ends of the support plate are connected to the left and right inner side walls of the gate frame. Edge structures matching with the inner wall of the eaves part are arranged at both lower ends of the support plate. A step structure is arranged at the upper side edge of the support plate. The step structure divides the upper side edge of the support plate into a lower first horizontal support section and a higher second horizontal support section. The two valve plates are respectively a first valve plate and a second valve plate. The first horizontal support section is used to support the first valve plate, and the second horizontal support section is used to support the second valve plate. When the gate is closed, the end of the first valve plate abuts against the step structure.

[0010] Adopting the above technical solution, the double pneumatic gate valve of the cement mill roller press of the present utility model has the following beneficial effects compared with the prior art:

[0011] 1. The design of double valve plates is adopted, and the two valve plates are arranged staggeredly up and down. When the gate is closed, the ends of the valve plates overlap each other, which can effectively reduce the wear of the ends of the valve plates. Moreover, this design can also provide a better sealing effect and reduce material leakage.

[0012] 2. Since the ends of the two valve plates are arranged staggeredly, when the gate is closed, only two opposite side edges of the valve plates are located in the slideway, and the end positions of the valve plates are suspended and cannot be supported by the slideway. Therefore, a support member is arranged below the valve plates to assist in supporting them. At the same time, the support member is set as a vertical support plate, and a steel plate with a thickness of 20 mm can be selected to minimize the obstruction to the material during the falling of the material. The upper end surfaces of the support plate form a first horizontal support section and a second horizontal support section with different heights, which are respectively used for fitting and supporting the two valve plates to improve the stability of the structure.

[0013] 3. Sealing gaskets are arranged on both sides of the valve plates, and the guide clamping plates press the sealing gaskets against the outer side wall of the gate frame, further improving the sealing performance and preventing material leakage.

[0014] 4. An inclined material guide plate is arranged above the valve plates. The material guide plate guides the material towards the center of the gate, thus deviating from the slideway and reducing the risk of material jamming.

[0015] 5. The design of the eaves part of the gate frame helps to protect the valve plates and the support plate, and improves the stability and durability of the whole device.

[0016] Through the above improvements, the double pneumatic gate valve has significantly improved its sealing performance, reduced the wear of the valve plate and the phenomenon of material jamming, enhanced the operation stability and reliability, and at the same time reduced the labor intensity of employees and the equipment maintenance cost. These improvements have brought about an increase in the overall system operation efficiency and an extension of the equipment service life, providing a strong guarantee for the efficient operation of the cement roller press system. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the state where material jamming occurs in the gate in the prior art.

[0018] Figure 2 It is a schematic structural diagram of the double pneumatic gate valve of the cement mill roller press of the present utility model.

[0019] Figure 3 It is Figure 2 The partial enlarged view of part A in

[0020] Figure 4 It is a schematic structural diagram of the support plate.

[0021] Figure 5 It is a schematic diagram of the state where the support plate cooperates with the valve plate. Detailed Description of the Preferred Embodiment

[0022] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0023] As Figure 2-5 shown, the double pneumatic gate valve of the cement mill roller press of the present utility model includes a gate disposed below the feeding hopper and two pneumatic gate valves disposed on both sides of the gate. The pneumatic gate valve includes a pneumatic device (i.e., cylinder 1) and a valve plate 2. The two pneumatic devices are used to drive the two valve plates 2 to approach each other to close the gate or move away from each other to open the gate.

[0024] The two valve plates 2 are arranged staggeredly up and down. When the gate is closed, the ends of the two valve plates 2 overlap each other.

[0025] The valve plate 2 is disposed on the gate frame 3. One end of the valve plate 2 passes outwards from the side wall of the gate frame 3 and is connected to the cylinder 1. Guide clamping plates 4 are disposed outside the gate frame 3 and on both sides of the valve plate 2.

[0026] Sealing gaskets 5 are further disposed on both sides of the valve plate 2. The guide clamping plates 4 press the sealing gaskets 5 against the outer side wall of the gate frame 3. A sealing gasket mounting plate 50 and a guide clamping plate mounting seat 40 are disposed on the side of the sealing gasket 5 away from the valve plate 2. A connecting plate 6 is fixed on the guide clamping plate 4, and the connecting plate 6 and the guide clamping plate mounting seat 40 are fixed by bolts 7.

[0027] The gate frame 3 includes an eaves portion 31 located at the inner edge.

[0028] An inclined material guide plate 8 is arranged above the valve plate 2. The upper end of the material guide plate 8 is connected to the eaves portion 31, and the lower end extends towards the center of the gate.

[0029] On the gate frame 3 and below the two valve plates 2, there is a support member for supporting the valve plates 2.

[0030] The support member is a support plate 9. The support plate 9 is arranged vertically. The two ends of the support plate 9 are connected to the left and right inner side walls of the gate frame 3. Edge structures that cooperate with the inner wall of the eaves portion 31 are provided at the two lower ends of the support plate 9. A step structure 90 is provided at the upper side edge of the support plate 9. The step structure 90 divides the upper side edge of the support plate 9 into a lower first horizontal support section 91 and a higher second horizontal support section 92. The two valve plates 2 are respectively a first valve plate 21 and a second valve plate 22. The first horizontal support section 91 is used to support the first valve plate 21, and the second horizontal support section 92 is used to support the second valve plate 22. When the gate is closed, the end of the first valve plate 21 abuts against the step structure 90.

[0031] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of the present invention.

Claims

1. A double pneumatic gate valve for a cement mill roller press, characterized in that: It includes a gate arranged below the feeding hopper and two pneumatic gate valves arranged on both sides of the gate, the pneumatic gate valve includes a pneumatic device and a valve plate, the two pneumatic devices are used to drive the two valve plates to approach each other to close the gate or to move away from each other to open the gate; the two valve plates are staggered up and down, and when the gate is closed, the ends of the two valve plates overlap each other; a support for supporting the valve plates is arranged on the gate frame and below the two valve plates.

2. The double pneumatic gate valve for cement mill roller press according to claim 1, characterized in that: The valve plate is arranged on the gate frame, one end of the valve plate passes outward from the side wall of the gate frame and is connected to the pneumatic device, and guide clamping plates are arranged on the outside of the gate frame and on both sides of the valve plate.

3. The double pneumatic gate valve for cement mill roller press according to claim 2, characterized in that: Sealing gaskets are also arranged on both sides of the valve plate, and the guide clamping plate presses the sealing gasket against the outer wall of the gate frame; a sealing gasket mounting plate and a guide clamping plate mounting seat are arranged on the side of the sealing gasket away from the valve plate, a connecting plate is fixed on the guide clamping plate, and the connecting plate and the guide clamping plate mounting seat are fixed by bolts.

4. The double pneumatic gate valve for cement mill roller press according to any one of claims 1 to 3, characterized in that: The gate frame includes an eave portion located at an inner edge.

5. The double pneumatic gate valve for cement mill roller press according to claim 4, characterized in that: An inclined material guide plate is arranged above the valve plate, the upper end of the material guide plate is connected to the eaves portion, and the lower end of the material guide plate extends toward the center of the gate.

6. The double pneumatic gate valve for cement mill roller press according to claim 4, characterized in that: The support member is a support plate, which is vertically arranged, with two ends of the support plate connected to the left and right inner walls of the gate frame, edge structures matching the inner walls of the eaves are arranged at the lower ends of the support plate, and a step structure is arranged at the upper edge of the support plate. The step structure separates the upper edge of the support plate into a lower first horizontal support section and a higher second horizontal support section. The two valve plates are respectively the first valve plate and the second valve plate, the first horizontal support section is used to support the first valve plate, and the second horizontal support section is used to support the second valve plate. When the gate is closed, the end of the first valve plate is against the step structure.

Images