Vacuum disc type blow-down valve

Abstract

The utility model provides a vacuum disc type blow-down valve, and belongs to the technical field of closestool blow-down valves. The problem that in the prior art, the maintenance and replacement processes are tedious is solved. The butterfly valve comprises a butterfly valve body assembly and a fixing plate assembly, the butterfly valve body assembly comprises an upper butterfly plate and a lower butterfly plate, the upper butterfly plate and the lower butterfly plate are fixed in a stacked structure, the fixing plate assembly comprises a fixing bottom plate, a valve air cylinder, a first loose joint and a second loose joint, and the fixing bottom plate is fixedly connected with the upper end of the upper butterfly plate. The valve cylinder is fixed with one end of the fixed bottom plate, a cylinder shaft extends out of the valve cylinder, the cylinder shaft is connected with a first loose joint, the first loose joint is connected with a second loose joint, a rod stop sleeve is fixedly connected in the second loose joint, a valve shaft is fixed in the rod stop sleeve, a through hole is formed in the upper butterfly plate, a sleeve hole is formed in the lower butterfly plate, and a shaft sleeve is fixedly connected with the lower end of the valve shaft; the valve shaft penetrates through the through hole, and the shaft sleeve is fixedly installed in the sleeve hole. The device has the advantages of being reliable in work and convenient to disassemble.

Description

Technical Field

[0001] This utility model belongs to the technical field of toilet drain valves, and relates to a vacuum disc drain valve. Background Technology

[0002] Vacuum disc drain valves are key components installed on vacuum toilet drain systems to achieve the function of draining waste. These drain valves are commonly found in places with special requirements for space and water resource utilization, such as ships and airplanes, as well as in some public restrooms with high hygiene and environmental protection standards.

[0003] Chinese patent CN215888501U discloses a drain valve for a vacuum toilet, including a vacuum drain valve, a pneumatically controlled water inlet valve, and a pneumatically controlled actuator. The pneumatically controlled water inlet valve is installed on the water inlet pipe of the vacuum toilet. The left and right ends of the vacuum drain valve are respectively provided with a drain inlet and a drain outlet. A drain pipe connector and a drain pipe connector are fixedly installed on the drain inlet and the drain outlet, respectively. The pneumatically controlled water inlet valve and the pneumatically controlled actuator are fixedly installed on the drain pipe connector. A flange fixing plate is provided on the side wall of the drain pipe connector. An L-shaped fixing bracket and a U-shaped fixing bracket are provided on the upper side of the flange fixing plate. The bottom of the L-shaped fixing bracket is provided with a mounting hole, and the side of the L-shaped fixing bracket is provided with a mounting groove. The mounting groove is inserted and engaged with the flange plate. A rotating buckle is installed on the top of the mounting groove. The top of the L-shaped fixing bracket is provided with a detachable clamp structure, which includes a fixed half clamp and a movable half clamp. The two ends of the fixed half clamp and the two ends of the movable half clamp are respectively snapped together.

[0004] The patent provides a vacuum toilet drain valve. Although the overall structure is compact, the repair and replacement process for some internal components (such as the automatic rubber tube clamping device and the internal structure of the vacuum breaker valve) may be cumbersome and require a lot of disassembly work when they malfunction. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a vacuum disc drain valve.

[0006] The objective of this utility model can be achieved through the following technical solution: A vacuum disc-type drain valve includes a butterfly valve body assembly and a fixing plate assembly. The butterfly valve body assembly includes an upper butterfly plate and a lower butterfly plate, which are stacked and fixed. The fixing plate assembly includes a fixing base plate, a valve cylinder, a first union, and a second union. The fixing base plate is fixedly connected to the upper end of the upper butterfly plate. The valve cylinder is fixed to one end of the fixing base plate. A cylinder shaft extends from the valve cylinder and is connected to the first union. The first union is connected to the second union. A rod stop sleeve is fixedly connected in the second union. A valve shaft is fixed inside the rod stop sleeve. A through hole is opened in the upper butterfly plate. A sleeve hole is opened in the lower butterfly plate. A bushing is fixedly connected to the lower end of the valve shaft. The valve shaft passes through the through hole and the bushing is fixedly installed inside the sleeve hole. The fixed base plate is L-shaped and a connecting protrusion is formed at one end of the fixed base plate. A water outlet elbow is fixedly connected in the connecting protrusion. Water outlets are opened in the fixed base plate, upper butterfly plate and lower butterfly plate at the lower end of the water outlet elbow.

[0007] In the aforementioned vacuum disc drain valve, a rotating plate is installed between the upper butterfly plate and the lower butterfly plate. An upper butterfly valve pressure ring and a lower butterfly valve pressure ring are fixed at the upper and lower ends of the rotating plate, respectively. An upper silicone ring and a lower silicone ring are installed in the upper butterfly valve pressure ring and the lower butterfly valve pressure ring, respectively. A rotating plate outlet is provided in the rotating plate inside the upper butterfly valve pressure ring and the lower butterfly valve pressure ring.

[0008] In the aforementioned vacuum disc drain valve, a mounting box is formed at one end of the fixed base plate, and the upper and lower ends of the valve cylinder are respectively connected to an upper rotating shaft and a lower rotating shaft. An upper copper sleeve and a lower copper sleeve are respectively fitted on the outside of the upper rotating shaft and the lower rotating shaft.

[0009] In the aforementioned vacuum disc drain valve, a crescent plate is fixedly connected to the lower end of the rotating plate, and a screw is fixedly connected to the crescent plate, with the screw passing through and extending out of the lower disc plate.

[0010] In the aforementioned vacuum disc drain valve, a crescent groove is provided in the lower butterfly plate.

[0011] Compared with the prior art, the vacuum disc drain valve provided by this utility model has the following advantages: 1. A stable transmission structure is formed through the linkage design of the valve cylinder, cylinder shaft, first union, second union, rod stop sleeve, valve shaft and bushing. The cylinder drives the valve shaft to move, and the positioning of the sleeve hole and through hole ensures the precise opening and closing of the upper and lower butterfly plates, ensuring the reliability of this utility model; 2. The lower end of the rotating plate is fixed with a screw through a crescent plate. The screw directly passes through and extends out of the lower butterfly plate. During maintenance, it is not necessary to disassemble the entire valve body. Only the exposed screw needs to be turned to quickly remove the rotating plate, butterfly valve pressure ring and silicone ring. Compared with the traditional welded or embedded sealing structure, this design transforms the sealing components into independent replaceable modules. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0014] Figure 3 This is an exploded view of the fixed plate assembly.

[0015] Figure 4 This is a schematic diagram of the rotating plate from another angle.

[0016] In the diagram: 1. Butterfly valve body assembly; 11. Upper butterfly plate; 111. Through hole; 12. Lower butterfly plate; 121. Sleeve hole; 122. Crescent groove; 2. Fixing plate assembly; 21. Fixing base plate; 211. Connecting protrusion; 212. Mounting box; 22. Valve cylinder; 221. Cylinder shaft; 222. Upper rotating shaft; 223. Lower rotating shaft; 224. Upper copper sleeve; 225. Lower copper sleeve; 23. First union; 24. Second union; 25. Rod stop sleeve; 3. Valve shaft; 31. Shaft sleeve; 4. Outlet elbow; 5. Rotary plate; 51. Rotary plate outlet; 6. Upper butterfly valve pressure ring; 61. Upper silicone ring; 7. Lower butterfly valve pressure ring; 71. Lower silicone ring; 8. Crescent plate; 9. Screw. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figures 1 to 4 As shown, this embodiment includes a butterfly valve body assembly 1 and a fixing plate assembly 2. The butterfly valve body assembly 1 includes an upper butterfly plate 11 and a lower butterfly plate 12, which are stacked and fixed. The fixing plate assembly 2 includes a fixing base plate 21, a valve cylinder 22, a first union 23, and a second union 24. The fixing base plate 21 is fixedly connected to the upper end of the upper butterfly plate 11, and the valve cylinder 22 is fixed to one end of the fixing base plate 21. The valve cylinder 22 extends outwards... The cylinder shaft 221 is connected to the first union 23, which is connected to the second union 24. A rod stop sleeve 25 is fixedly connected in the second union 24, and a valve shaft 3 is fixed inside the rod stop sleeve 25. A through hole 111 is opened in the upper butterfly plate 11, and a sleeve hole 121 is opened in the lower butterfly plate 12. A bushing 31 is fixedly connected to the lower end of the valve shaft 3. The valve shaft 3 passes through the through hole 111 and the bushing 31 is fixedly installed inside the sleeve hole 121.

[0019] like Figures 1 to 4As shown, the fixed base plate 21 is L-shaped and has a connecting protrusion 211 at one end. A water outlet elbow 4 is fixedly connected to the connecting protrusion 211. Water outlets are provided in the fixed base plate 21, upper butterfly plate 11, and lower butterfly plate 12 at the lower end of the water outlet elbow 4. A rotating plate 5 is installed between the upper butterfly plate 11 and the lower butterfly plate 12. An upper butterfly valve pressure ring 6 and a lower butterfly valve pressure ring 7 are fixed at the upper and lower ends of the rotating plate 5, respectively. An upper silicone ring 61 and a lower silicone ring 71 are installed in the upper butterfly valve pressure ring 6 and the lower butterfly valve pressure ring 7, respectively. A rotating plate outlet 51 is provided in the rotating plate 5 inside the upper butterfly valve pressure ring 6 and the lower butterfly valve pressure ring 7. The valve shaft 3 passes through the center of the rotating plate 5 and is connected to the rotating plate 5. The rotating plate 5 is driven by the valve shaft 3 to control the water outlet of this embodiment.

[0020] To elaborate further, such as Figures 1 to 3 As shown, one end of the fixed base plate 21 is formed as a mounting box 212. The upper and lower ends of the valve cylinder 22 are respectively connected to the upper rotating shaft 222 and the lower rotating shaft 223. The upper rotating shaft 222 and the lower rotating shaft 223 are respectively fitted with an upper copper sleeve 224 and a lower copper sleeve 225. The upper copper sleeve 224 and the lower copper sleeve 225 pass through the upper and lower ends of the mounting box 212 and are fixedly connected to the mounting box 212. The upper rotating shaft 222 and the lower rotating shaft 223 are respectively installed inside the upper copper sleeve 224 and the lower copper sleeve 225, and bolts are provided at the ends of the upper rotating shaft 222 and the lower rotating shaft 223 so that the upper rotating shaft 222 and the lower rotating shaft 223 are respectively connected to the upper copper sleeve 224 and the lower copper sleeve 225.

[0021] To elaborate further, such as Figures 1 to 4 As shown, a crescent plate 8 is fixedly connected to the lower end of the rotating plate 5. A screw 9 is fixedly connected to the crescent plate 8. The screw 9 passes through and extends out of the lower butterfly plate 12. A crescent groove 122 is opened in the lower butterfly plate 12. The crescent plate 8 is placed into the crescent groove 122 and fixed. It can be quickly disassembled by turning the exposed screw 9.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0023] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A vacuum disc drain valve, comprising a butterfly valve body assembly (1) and a fixing plate assembly (2), characterized in that: The butterfly valve body assembly (1) includes an upper butterfly plate (11) and a lower butterfly plate (12), which are stacked and fixed. The fixing plate assembly (2) includes a fixing base plate (21), a valve cylinder (22), a first union (23), and a second union (24). The fixing base plate (21) is fixedly connected to the upper end of the upper butterfly plate (11). The valve cylinder (22) is fixed to one end of the fixing base plate (21). The valve cylinder (22) has a cylinder shaft (221) extending out. The cylinder shaft (221) is connected to the first union (23). The first union (23) is connected to the second union (24). A rod is fixedly connected in the second union (24). The stop sleeve (25) has a valve shaft (3) fixed inside. The upper butterfly plate (11) has a through hole (111) and the lower butterfly plate (12) has a sleeve hole (121). The lower end of the valve shaft (3) is fixedly connected to a bushing (31). The valve shaft (3) passes through the through hole (111) and the bushing (31) is fixedly installed inside the sleeve hole (121). The fixed base plate (21) is L-shaped and a connecting protrusion (211) is formed at one end of the fixed base plate (21). A water outlet elbow (4) is fixedly connected in the connecting protrusion (211). Water outlets are opened in the fixed base plate (21), the upper butterfly plate (11) and the lower butterfly plate (12) at the lower end of the water outlet elbow (4).

2. The vacuum disc drain valve according to claim 1, characterized in that: A rotating plate (5) is installed between the upper butterfly plate (11) and the lower butterfly plate (12). An upper butterfly valve pressure ring (6) and a lower butterfly valve pressure ring (7) are fixed at the upper and lower ends of the rotating plate (5). An upper silicone ring (61) and a lower silicone ring (71) are installed in the upper butterfly valve pressure ring (6) and the lower butterfly valve pressure ring (7). A rotating plate outlet (51) is opened in the rotating plate (5) inside the upper butterfly valve pressure ring (6) and the lower butterfly valve pressure ring (7).

3. The vacuum disc drain valve according to claim 1, characterized in that: The fixed base plate (21) has an installation box (212) at one end. The upper and lower ends of the valve cylinder (22) are connected to the upper rotating shaft (222) and the lower rotating shaft (223) respectively. The upper rotating shaft (222) and the lower rotating shaft (223) are respectively fitted with an upper copper sleeve (224) and a lower copper sleeve (225).

4. A vacuum disc drain valve according to claim 2, characterized in that: The lower end of the rotating plate (5) is fixedly connected to a crescent plate (8), and a screw (9) is fixedly connected in the crescent plate (8). The screw (9) passes through and extends out of the lower butterfly plate (12).

5. A vacuum disc drain valve according to claim 1, characterized in that: The lower butterfly plate (12) is provided with a crescent groove (122).

Images