Pressure-superposed backflow-preventing water supply equipment

Abstract

The utility model provides pressure-superposed backflow-preventing water supply equipment, and relates to the technical field of secondary water supply. The top of the pumping and draining cavity is fixedly connected with a bottom cover seat, and the bottom of the pumping and draining cavity is fixedly connected with a top cover frame; a pumping and draining piston is installed in the pumping and draining cavity, a crankshaft is installed in the top of the top cover frame, a linkage rod is connected to the outside of the crankshaft, and the linkage rod is connected with the pumping and draining piston. A motor is fixedly mounted outside the top cover frame, and a driving shaft of the motor is connected with the crankshaft; four valves are connected to the outer portion of the pumping and draining cavity, three-way pipes are connected to the ends of the valves, and the two three-way pipes are communicated with a water supply pipeline. The motor drives the crankshaft to rotate, the crankshaft drives the pumping and draining piston to move up and down in a reciprocating mode through the linkage rod, continuous pressure-superposed water supply operation is achieved, when water in the valve stops flowing, thrust is applied to the sealing plug through the spring, the sealing plug is made to make close contact with the inner wall of the valve body, and the backflow condition in a water supply pipeline is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of secondary water supply, in particular to a superimposed pressure anti-backflow water supply device. Background Art

[0002] Since the network superimposed pressure water supply is directly connected in series to the municipal water supply pipe network for pressurized water supply, it can make full use of the pressure of the municipal water supply pipe network to save energy, and eliminates the secondary pollution link of water tanks, and the water supply quality is good. Therefore, it is widely used in the secondary water supply occasions of residential buildings, shopping malls, schools, etc.

[0003] In the application process of the existing superimposed pressure water supply device, the traditional impeller method is generally used for water supply pumping. It is very easy to have the situation of water backflow in the pipe when the operation stops. Then, a check valve needs to be installed on the pipeline to prevent the backflow situation, and the overall application effect is not good. Summary of the Utility Model

[0004] The present disclosure relates to a superimposed pressure anti-backflow water supply device, which solves the problem that in the application process of the existing superimposed pressure water supply device, the traditional impeller method is generally used for water supply pumping. It is very easy to have the situation of water backflow in the pipe when the operation stops. Then, a check valve needs to be installed on the pipeline to prevent the backflow situation, and the overall application effect is not good.

[0005] In the first aspect of the present disclosure, a superimposed pressure anti-backflow water supply device is provided, which specifically includes: a pumping cavity; a bottom cover seat is fixedly connected to the top of the pumping cavity, and a top cover frame is fixedly connected to the bottom of the pumping cavity; a pumping piston is installed inside the pumping cavity, a crankshaft is installed inside the top of the top cover frame, a linkage rod is connected to the outside of the crankshaft, and the linkage rod is connected to the pumping piston; a motor is fixedly installed outside the top cover frame, and the driving shaft of the motor is connected to the crankshaft; four valves are connected to the outside of the pumping cavity, and a tee pipe is connected to the end of the valve, and two tee pipes are connected to the water supply pipeline.

[0006] Further, the valve is composed of a valve body, a sealing plug and a spring. The sealing plug is located inside the valve body. A through hole is provided inside the valve body. A plug rod is provided outside the sealing plug. The plug rod penetrates through the through hole. The spring is sleeved outside the plug rod. One end of the spring contacts the sealing plug, and the other end of the spring contacts the valve body. When the water inside the valve stops flowing, a thrust is applied to the sealing plug by the spring, so that the sealing plug tightly contacts the inner wall of the valve body, achieving a one-way sealing effect.

[0007] Further, the pumping piston is slidably connected to the inside of the pumping cavity. A vertical connecting rod is provided at the top of the pumping piston. A guiding hole is provided inside the bottom of the top cover frame. The vertical connecting rod slidably penetrates through the guiding hole. The motor drives the crankshaft to rotate, and the crankshaft drives the pumping piston to reciprocate up and down through the linkage rod.

[0008] Further, a water inlet A and a water outlet A are provided near the bottom of the pumping cavity. The water inlet A and the water outlet A are located below the pumping piston. The water inlet A is communicated with a valve, and the water outlet A is communicated with a valve.

[0009] Further, a water inlet B and a water outlet B are provided near the top of the pumping cavity. The water inlet B and the water outlet B are located above the pumping piston. The water inlet B is communicated with a valve, and the water outlet B is communicated with a valve.

[0010] Further, the crankshaft is rotatably connected to the top cover frame. The upper end of the linkage rod is rotatably connected to the crankshaft, and the lower end of the linkage rod is rotatably connected to the top end of the vertical connecting rod.

[0011] Further, the tee pipe is communicated with two valves on the same side of the pumping cavity. The two valves on the same side of the pumping cavity are alternately opened and closed. When the pumping piston moves upward, the water inside the tee pipe enters the bottom of the pumping cavity through the valve at the water inlet A part, and the water inside the top of the pumping cavity is discharged into another tee pipe through the valve at the water outlet B. When the pumping piston moves downward, the water inside the tee pipe enters the top of the pumping cavity through the valve at the water inlet B part, and the water inside the bottom of the pumping cavity is discharged into another tee pipe through the valve at the water outlet A.

[0012] The utility model provides a superimposed pressure anti-backflow water supply device, which has the following beneficial effects:

[0013] When in use, when the water inside the valve stops flowing, the spring applies a thrust to the sealing plug, making the sealing plug closely contact the inner wall of the valve body, achieving a one-way sealing effect and effectively preventing the occurrence of backflow inside the water supply pipeline.

[0014] In addition, the motor drives the crankshaft to rotate, and the crankshaft drives the pumping piston to reciprocate up and down through the linkage rod. When the pumping piston moves upward, the water inside the tee pipe enters the bottom of the pumping cavity through the valve at the water inlet A part, and the water inside the top of the pumping cavity is discharged into another tee pipe through the valve at the water outlet B. When the pumping piston moves downward, the water inside the tee pipe enters the top of the pumping cavity through the valve at the water inlet B part, and the water inside the bottom of the pumping cavity is discharged into another tee pipe through the valve at the water outlet A, realizing continuous and uninterrupted superimposed pressure water supply operation.

[0015] Other advantages, objectives and features of the utility model will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings of the embodiments will be briefly introduced below.

[0017] The accompanying drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.

[0018] In the accompanying drawings:

[0019] Figure 1 The overall axonometric structural schematic diagram of the present application is shown;

[0020] Figure 2 The internal sectional structural schematic diagram of the pumping and discharging cavity of the present application is shown;

[0021] Figure 3 The structural schematic diagram of the connection between the top cover frame, the motor and the crankshaft of the present application is shown;

[0022] Figure 4 The internal sectional structural schematic diagram of the valve of the present application is shown;

[0023] Figure 5 The sectional structural schematic diagram of the valve body of the present application is shown.

[0024] List of reference numerals

[0025] 1. Pumping and discharging cavity; 101. Water inlet A; 102. Water outlet A; 103. Water inlet B; 104. Water outlet B; 2. Bottom cover seat; 3. Top cover frame; 301. Guide hole; 4. Pumping and discharging piston; 401. Vertical connecting rod; 5. Motor; 6. Crankshaft; 7. Linking rod; 8. Valve; 81. Valve body; 8101. Through hole; 82. Sealing plug; 8201. Plug rod; 83. Spring; 9. Three-way pipe. Detailed implementation manners

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0027] Embodiment 1: Please refer to Figures 1 to 5 :

[0028] The utility model provides a stacked pressure anti-backflow water supply device, comprising: a pumping and discharging cavity 1; a bottom cover seat 2 is fixedly connected to the top of the pumping and discharging cavity 1, and a top cover frame 3 is fixedly connected to the bottom of the pumping and discharging cavity 1; a pumping and discharging piston 4 is installed inside the pumping and discharging cavity 1, a crankshaft 6 is installed inside the top of the top cover frame 3, a linkage rod 7 is connected to the outside of the crankshaft 6, and the linkage rod 7 is connected to the pumping and discharging piston 4; a motor 5 is fixedly installed outside the top cover frame 3, and the driving shaft of the motor 5 is connected to the crankshaft 6; four valves 8 are connected to the outside of the pumping and discharging cavity 1, a tee pipe 9 is connected to the end of the valve 8, and two tee pipes 9 are communicated with the water supply pipeline; the valve 8 is composed of a valve body 81, a sealing plug 82 and a spring 83, the sealing plug 82 is located inside the valve body 81, a through hole 8101 is arranged inside the valve body 81, a plug rod 8201 is arranged outside the sealing plug 82, the plug rod 8201 penetrates through the through hole 8101, the spring 83 is sleeved outside the plug rod 8201, one end of the spring 83 contacts the sealing plug 82, and the other end of the spring 83 contacts the valve body 81; when the water inside the valve 8 stops flowing, a thrust is applied to the sealing plug 82 through the spring 83, so that the sealing plug 82 closely contacts the inner wall of the valve body 81, achieving a one-way sealing effect and effectively preventing the occurrence of backflow inside the water supply pipeline.

[0029] In the embodiment of the present disclosure, the pumping and discharging piston 4 is slidably connected to the inside of the pumping and discharging cavity 1, a vertical connecting rod 401 is arranged at the top of the pumping and discharging piston 4, a guiding hole 301 is arranged inside the bottom of the top cover frame 3, the vertical connecting rod 401 slidably penetrates through the guiding hole 301, a water inlet A101 and a water outlet A102 are arranged near the bottom of the pumping and discharging cavity 1, the water inlet A101 and the water outlet A102 are located below the pumping and discharging piston 4, the water inlet A101 is communicated with the valve 8, the water outlet A102 is communicated with the valve 8, a water inlet B103 and a water outlet B104 are arranged near the top of the pumping and discharging cavity 1, the water inlet B103 and the water outlet B104 are located above the pumping and discharging piston 4, the water inlet B103 is communicated with the valve 8, and the water outlet B104 is communicated with the valve 8.

[0030] In the embodiment of the present disclosure, the crankshaft 6 is rotatably connected to the top cover frame 3, the upper end of the linkage rod 7 is rotatably connected to the crankshaft 6, the lower end of the linkage rod 7 is rotatably connected to the top end of the vertical connecting rod 401, the tee pipe 9 is communicated with two valves 8 on the same side of the pumping and discharging cavity 1, and two valves 8 on the same side of the pumping and discharging cavity 1 are alternately opened and closed;

[0031] With the above technical solution, the motor 5 drives the crankshaft 6 to rotate, and the crankshaft 6 drives the pumping piston 4 to reciprocate up and down through the linkage rod 7; when the pumping piston 4 moves upward, the water inside the three-way pipe 9 enters the bottom of the pumping cavity 1 through the valve 8 at the water inlet A101, and the water inside the top of the pumping cavity 1 is discharged into another three-way pipe 9 through the valve 8 at the water outlet B104; when the pumping piston 4 moves downward, the water inside the three-way pipe 9 enters the top of the pumping cavity 1 through the valve 8 at the water inlet B103, and the water inside the bottom of the pumping cavity 1 is discharged into another three-way pipe 9 through the valve 8 at the water outlet A102, realizing continuous and uninterrupted superimposed pressure water supply operation.

[0032] The working principle of this embodiment: The motor 5 drives the crankshaft 6 to rotate, and the crankshaft 6 drives the pumping piston 4 to reciprocate up and down through the linkage rod 7; when the pumping piston 4 moves upward, the water inside the three-way pipe 9 enters the bottom of the pumping cavity 1 through the valve 8 at the water inlet A101, and the water inside the top of the pumping cavity 1 is discharged into another three-way pipe 9 through the valve 8 at the water outlet B104; when the pumping piston 4 moves downward, the water inside the three-way pipe 9 enters the top of the pumping cavity 1 through the valve 8 at the water inlet B103, and the water inside the bottom of the pumping cavity 1 is discharged into another three-way pipe 9 through the valve 8 at the water outlet A102, thus realizing continuous and uninterrupted superimposed pressure water supply operation; when the water inside the valve 8 stops flowing, the spring 83 applies a thrust to the sealing plug 82, making the sealing plug 82 closely contact the inner wall of the valve body 81 to prevent the internal backflow of the water supply pipeline.

[0033] In this article, the following points need to be noted:

[0034] 1. The attached drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0035] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A superimposed backflow prevention water supply device, comprising: A pumping chamber (1); characterized in that a bottom cover seat (2) is fixedly connected to the top of the pumping chamber (1), and a top cover frame (3) is fixedly connected to the bottom of the pumping chamber (1); a pumping piston (4) is installed inside the pumping chamber (1), a crankshaft (6) is installed inside the top of the top cover frame (3), and a linkage rod (7) is connected to the outside of the crankshaft (6), and the linkage rod (7) is connected to the pumping piston (4); a motor (5) is fixedly installed outside the top cover frame (3), and the drive shaft of the motor (5) is connected to the crankshaft (6); four valves (8) are connected to the outside of the pumping chamber (1), and the ends of the valves (8) are connected to three-way pipes (9), and two three-way pipes (9) are connected to the water supply pipeline.

2. The laminated anti-backflow water supply equipment according to claim 1, characterized in that: The valve (8) is composed of a valve body (81), a sealing plug (82) and a spring (83). The sealing plug (82) is located inside the valve body (81). A through hole (8101) is provided inside the valve body (81). A plug rod (8201) is provided outside the sealing plug (82). The plug rod (8201) passes through the through hole (8101). The spring (83) is sleeved on the outside of the plug rod (8201). One end of the spring (83) contacts the sealing plug (82), and the other end of the spring (83) contacts the valve body (81).

3. The laminated anti-backflow water supply equipment according to claim 1, characterized in that: The pumping piston (4) is slidably connected to the inside of the pumping chamber (1); a vertical connecting rod (401) is arranged on the top of the pumping piston (4); a guide hole (301) is arranged in the bottom of the top cover frame (3); and the vertical connecting rod (401) slides through the guide hole (301).

4. The laminated anti-backflow water supply equipment according to claim 1, characterized in that: The pumping chamber (1) is provided with a water inlet A (101) and a water outlet A (102) near the bottom. The water inlet A (101) and the water outlet A (102) are located below the pumping piston (4). The water inlet A (101) is connected to the valve (8), and the water outlet A (102) is connected to the valve (8).

5. The laminated anti-backflow water supply equipment according to claim 1, characterized in that: The pumping chamber (1) is provided with a water inlet B (103) and a water outlet B (104) near the top, the water inlet B (103) and the water outlet B (104) are located above the pumping piston (4), the water inlet B (103) is connected to the valve (8), and the water outlet B (104) is connected to the valve (8).

6. The laminated anti-backflow water supply equipment according to claim 3, characterized in that: The crankshaft (6) is rotatably connected to the top cover frame (3), the upper end of the linkage rod (7) is rotatably connected to the crankshaft (6), and the lower end of the linkage rod (7) is rotatably connected to the top end of the vertical connecting rod (401).

7. The laminated anti-backflow water supply equipment according to claim 1, characterized in that: The three-way pipe (9) is connected to two valves (8) located on the same side of the pumping chamber (1), and the two valves (8) on the same side of the pumping chamber (1) are opened and closed alternately.

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