Water pump NBR valve

Abstract

The utility model relates to a water pump NBR valve, in particular to the technical field of water pump equipment. Comprising a pump body, a valve assembly, a pump cover, a first water inlet, a second water inlet, a water outlet and a flow guide cavity. The problem that in the using process of an existing water pump, water flow in a pump body of the water pump easily flows back through a water inlet, and therefore the working efficiency of the water pump is further affected is solved.

Description

Technical Field

[0001] This utility model relates to the field of water pump equipment technology, and in particular to a water pump NBR valve. Background Technology

[0002] A water pump is a fluid transport device that uses mechanical energy to move liquids (most commonly water) from a low place to a high place, from a low-pressure area to a high-pressure area, or to increase their flow rate. It is one of the most widely used and diverse types of pumps, involved in almost all industrial and civil fields that require liquid flow. The pump body (1) is the skeleton and pressure vessel of the pump. It defines the main flow channel of the pump, houses and supports all internal working parts, withstands operating loads and pressures, provides connection interfaces with pipelines, and forms a sealed cavity to prevent leakage. The design and manufacturing quality of the pump body directly affects the pump's performance (efficiency, head), reliability, lifespan, and safety.

[0003] During the operation of current water pumps, the water inside the pump body can easily flow back through the inlet, which further affects the working efficiency of the water pump. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] This utility model provides an NBR valve for water pumps, which overcomes the problem that in current water pumps, the water inside the pump body can easily flow back through the inlet during use, thereby further affecting the working efficiency of the water pump.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a water pump NBR valve, including a pump body, a valve assembly, a pump cover, a first inlet, a second inlet, an outlet, and a flow guide cavity;

[0008] The pump body's mounting surface is fitted with the pump cover via the valve assembly; the pump cover's front end has the first water inlet; the pump body's top has the second water inlet; the first and second water inlets have internal threads; the pump body's lower part has the water outlet; and the pump body's interior has the flow guide cavity.

[0009] Preferably, the valve assembly includes an NBR mounting plate, a swing plate, a stainless steel counterweight disc, a through hole, a first screw, and a first nut;

[0010] The NBR mounting plate is provided between the pump cover and the pump body; the NBR mounting plate has an internal hollow structure, and a circular swing plate is provided in the upper center of the NBR mounting plate; stainless steel counterweight discs are provided on the front and rear surfaces of the swing plate; a through hole is provided in the middle of the swing plate; the first screw passes through the through hole; the two stainless steel counterweight discs are locked to the front and rear end faces of the NBR mounting plate by the first screw and the first nut.

[0011] Preferably, the stainless steel counterweight disc includes a small first stainless steel counterweight disc and a large second stainless steel counterweight disc; the first stainless steel counterweight disc is installed near the first water inlet, and the second stainless steel counterweight disc is installed near the pump body.

[0012] Preferably, the pump cover, the edge portion of the NBR mounting plate, and the pump body are each provided with six matching mounting holes; the second screw is provided in the mounting holes; the pump cover, the NBR mounting plate, and the pump body are locked together by the second screw and the second nut.

[0013] Preferably, the mounting surfaces of the pump cover, the NBR mounting plate, and the pump body are all inclined.

[0014] (3) Beneficial effects

[0015] This utility model provides an NBR valve for water pumps, which overcomes the problem that in current water pumps, the water inside the pump body can easily flow back through the inlet during use, thereby further affecting the working efficiency of the water pump.

[0016] 1. By setting an NBR mounting plate and a corresponding stainless steel counterweight disc on the NBR mounting plate, the water flow can be closely attached to the inlet plane of the pump cover during the transportation process. At this time, the inlet is in a sealed state, which further prevents the water in the pump chamber from flowing back through the inlet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an NBR valve for a water pump proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the pump body in this utility model;

[0019] Figure 3 In this utility model Figure 2 A schematic diagram of the structure at the rear;

[0020] Figure 4 This is a schematic diagram of the pump cover structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the front end of the stainless steel counterweight disc in this utility model;

[0022] Figure 6 This is a schematic diagram of the rear end of the stainless steel counterweight disc in this utility model;

[0023] Reference numerals: 1-Pump body, 2-Valve assembly, 21-NBR mounting plate, 22-Swing plate, 23-Stainless steel counterweight disc, 231-First stainless steel counterweight disc, 232-Second stainless steel counterweight disc, 24-Through hole, 25-First screw, 26-First nut, 3-Pump cover, 4-First inlet, 5-Second inlet, 6-Outlet, 7-Guide cavity, 8-Mounting hole, 9-Second screw, 10-Second nut. Detailed Implementation

[0024] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0025] like Figures 1-6 As shown, the NBR valve for a water pump according to this utility model includes a pump body 1, a valve assembly 2, a pump cover 3, a first inlet 4, a second inlet 5, an outlet 6, and a guide chamber 7.

[0026] The pump body 1 has a pump cover 3 mounted on its mounting surface via the valve assembly 2; the pump cover 3 has a first water inlet 4 at its front end; the pump body 1 has a second water inlet 5 at its top; the first water inlet 4 and the second water inlet 5 have internal threads; the pump body 1 has an outlet 6 at its lower position; and the pump body 1 has a flow guide cavity 7 inside.

[0027] The valve assembly 2 includes an NBR mounting plate 21, a swing plate 22, a stainless steel counterweight disc 23, a through hole 24, a first screw 25, and a first nut 26;

[0028] The NBR mounting plate 21 is provided between the pump cover 3 and the pump body 1; the NBR mounting plate 21 has an internal hollow structure, and a circular swing plate 22 is provided in the upper middle part of the NBR mounting plate 21; stainless steel counterweight discs 23 are provided on the front and rear surfaces of the swing plate 22; a through hole 24 is provided in the middle of the swing plate 22; the first screw 25 passes through the through hole 24; the two stainless steel counterweight discs 23 are locked to the front and rear end faces of the NBR mounting plate 21 by the first screw 25 and the first nut 26.

[0029] The stainless steel counterweight disc 23 includes a small first stainless steel counterweight disc 231 and a large second stainless steel counterweight disc 232; the first stainless steel counterweight disc 231 is installed near the first water inlet 4, and the second stainless steel counterweight disc 232 is installed near the pump body 1.

[0030] The pump cover 3, the edge of the NBR mounting plate 21, and the pump body 1 are each provided with six matching mounting holes 8; the mounting holes 8 are provided with the second screw 9; the pump cover 3, the NBR mounting plate 21, and the pump body 1 are locked together by the second screw 9 and the second nut 10.

[0031] The mounting surfaces of the pump cover 3, the NBR mounting plate 21, and the pump body 1 are all inclined.

[0032] Working principle: During use, the pump body 1 has an inclined mounting surface. The valve assembly 2 is installed between the pump body 1 and the pump cover 3 by the second screw 9 and the second nut 10, and is in an inclined state. Under the gravity of the two stainless steel counterweight discs 23, the NBR mounting plate 21 is tightly attached to the inlet plane of the pump cover 3 to prevent water in the pump chamber from flowing back through the inlet and to maintain a sealed state.

[0033] When the water pump is operating and pumping water, the suction force of the pump pulls the NBR swing plate 22 up. At this time, the NBR swing plate 22 is no longer in contact with the inlet plane of the pump cover 3 and is in the open state. Water enters the pump chamber through the inlet of the pump cover 3 and is discharged from the outlet 6 of the pump body 1. Contents not described in detail in this specification are prior art known to those skilled in the art.

[0034] The embodiments described above are merely preferred embodiments of the present invention, and are described in a relatively specific and detailed manner. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A water pump NBR valve, characterized in that, It includes a pump body (1), a valve assembly (2), a pump cover (3), a first inlet (4), a second inlet (5), an outlet (6), and a flow guide chamber (7); The pump body (1) is mounted on the assembly surface of the pump body (1) via the valve assembly (2) and the pump cover (3) is provided with the first water inlet (4) at the front end of the pump cover (3); the pump body (1) is provided with the second water inlet (5) at the top; the first water inlet (4) and the second water inlet (5) are provided with internal threads; the pump body (1) is provided with the water outlet (6) at the lower position; the pump body (1) is provided with the flow guide cavity (7).

2. The NBR valve for a water pump according to claim 1, characterized in that, The valve assembly (2) includes an NBR mounting plate (21), a swing plate (22), a stainless steel counterweight disc (23), a through hole (24), a first screw (25), and a first nut (26); The NBR mounting plate (21) is provided between the pump cover (3) and the pump body (1); the NBR mounting plate (21) has an internal hollow structure, and a circular swing plate (22) is provided on the upper middle part of the NBR mounting plate (21); the stainless steel counterweight discs (23) are provided on the front and rear surfaces of the swing plate (22); the through hole (24) is provided in the middle of the swing plate (22); the first screw (25) passes through the through hole (24); the two stainless steel counterweight discs (23) are locked to the front and rear end faces of the NBR mounting plate (21) by the first screw (25) and the first nut (26).

3. The NBR valve for a water pump according to claim 2, characterized in that, The stainless steel counterweight disc (23) includes a small first stainless steel counterweight disc (231) and a large second stainless steel counterweight disc (232); the first stainless steel counterweight disc (231) is installed near the first water inlet (4), and the second stainless steel counterweight disc (232) is installed near the pump body (1).

4. The NBR valve for a water pump according to claim 2, characterized in that, The pump cover (3), the edge of the NBR mounting plate (21), and the pump body (1) are each provided with six matching mounting holes (8); a second screw (9) is provided in the mounting hole (8); the pump cover (3), the NBR mounting plate (21), and the pump body (1) are locked together by the second screw (9) and the second nut (10).

5. The NBR valve for a water pump according to claim 2, characterized in that, The mounting surfaces of the pump cover (3), the NBR mounting plate (21), and the pump body (1) are all inclined.

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