A vacuum water tank

Abstract

The invention relates to a vacuum water diversion box, comprising a box body, which is separated into a vacuum chamber and a water diversion chamber by a partition, and an isolation valve is arranged between the vacuum chamber and the water diversion chamber; the isolation valve is characterized in that: the isolation valve adopts an orange peel valve structure, the orange peel valve uses a rubber skin and a breathing hole on a breathing plate to form a sealing pair, when the water level in the water diversion chamber rises, the float rises to make the rubber skin deform laterally to close the breathing hole on the breathing plate, and the water diversion chamber is sealed and isolated from the vacuum chamber; when the water level in the water diversion chamber drops, the rubber skin of the orange peel valve stretches downward under the gravity of the float, gradually opens the breathing hole on the breathing plate, and opens the orange peel valve. It has a simple structure, simple and convenient operation, and flexible and reliable operation.

Description

Technical Field

[0001] The invention relates to a vacuum water induction box, which is suitable for a vacuum water induction box of an inlet channel of a vacuum self-priming pump. Background Art

[0002] The vacuum water inlet tank is installed in the inlet channel of the vacuum self-priming pump. It is a device that injects water into the pump cavity after sucking out the air in the pump cavity. As we all know, if the pump cavity of the vacuum pump is filled with air when it is pneumatic, it will idle and fail to transport the liquid medium in the pump inlet to the outlet. Even the impeller will idle and burn the motor or diesel engine. Therefore, a vacuum pump inlet is equipped with a vacuum or water injection device. For example, the vacuum self-priming pump with an auxiliary suction mechanism of our company's invention patent number CN201610399931.2 has an auxiliary suction mechanism installed on the inlet channel of the pump body. The auxiliary suction mechanism consists of a vacuum water inlet device, a vacuum pump, and a condenser. The vacuum water inlet device consists of a vacuum chamber and a water inlet chamber. An isolation valve is set between the vacuum chamber and the water inlet chamber. When the pump is started, the auxiliary suction mechanism is started at the same time to suck out the air in the pump cavity, so that the pump can operate normally and protect the safe operation of the pump. Its main disadvantages are: the valve disc of the isolation valve is connected to the float with a connecting rod mechanism. When the float floats up, the connecting rod mechanism pulls the valve disc up and seals with the valve seat. When the water level drops, the valve disc cannot be separated from the valve seat due to the negative pressure suction of the vacuum chamber. It is necessary to install a compensation valve on the side wall of the vacuum chamber. After each shutdown, the compensation valve needs to be manually operated to open the isolation valve. The structure is complicated and the operation is very troublesome. The most important thing is that the connecting rod mechanism is immersed in sewage for a long time, and the dirt is deposited on the connecting rod, causing the interconnected connecting rods to be stuck and unable to rotate flexibly, making the isolation valve ineffective, causing the vacuum self-priming pump to fail to operate normally or even be damaged, and the working reliability is poor. Summary of the invention

[0003] Aiming at the shortcomings of the prior art, the present invention provides a vacuum water diversion box with simple structure, simple operation and good working reliability.

[0004] The technical solution of the present invention includes a box body, which is separated into a vacuum chamber and a water diversion chamber by a partition. A water diversion port connected to the inlet channel of a vacuum self-priming pump is arranged at the bottom of the water diversion chamber, and an air suction port connected to the inlet of an air suction pump is arranged in the vacuum chamber. An isolation valve is arranged between the vacuum chamber and the water diversion chamber. Its characteristics are: the isolation valve adopts an orange peel valve structure, and the orange peel valve includes a breathing plate, a floating ball, and a rubber skin. The breathing plate is made by arranging a plurality of breathing holes on the partition. The middle of the rubber skin is fixedly installed at the center position of the lower plane of the breathing plate, and the two ends are fixedly connected to the upper end of the floating ball. The distribution position of the breathing holes is within the contact surface between the rubber skin and the breathing plate when the floating ball rises to the highest position.

[0005] In the above technical solution, the rubber skin adopts a rectangular structure.

[0006] In the above technical solution, the float and the rubber skin are connected through a connecting rod and a fixed plate. The lower end of the connecting rod is fixedly connected to the float, the upper end is fixedly connected to the center of the lower end surface of the fixed plate, and the upper end surface of the fixed plate is fixedly connected to both ends of the rubber skin.

[0007] In the above technical solution, the filter screen is fixedly installed on the partition outside the orange peel valve, the float is located on the lower side of the lower end surface of the filter screen, and the upper end of the connecting rod movably penetrates into the inner side of the filter screen and is connected to the fixed plate.

[0008] In the above technical solution, a trumpet-shaped floating ball limiting guide cylinder is provided on the lower end surface of the filter screen.

[0009] Compared with the prior art, the invention has the following beneficial effects: the orange peel valve uses a rubber skin and a breathing hole of a breathing plate to form a sealing pair. When the water level in the water diversion chamber rises, the float rises to cause the rubber skin to deform laterally to close the breathing hole on the breathing plate, thereby sealing and isolating the water diversion chamber from the vacuum chamber; when the water level in the water diversion chamber drops, the rubber skin of the orange peel valve stretches downward under the gravity of the float, gradually opening the breathing hole on the breathing plate and opening the orange peel valve. The invention has a simple structure, simple and convenient operation, and flexible and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0011] like Figure 1The vacuum water diversion box shown comprises a box body 10, which is separated into a vacuum chamber 2 and a water diversion chamber 7 by a partition 3. A water diversion port N3 connected to the inlet channel of a vacuum self-priming pump is arranged at the bottom of the water diversion chamber 7, and the water diversion port N3 is arranged on the bottom cover 9 of the water diversion box. The vacuum chamber 2 is provided with an air suction port N1 connected to the inlet of an air pump. The air in the vacuum chamber 2, the water diversion chamber 7 and the inlet channel of the vacuum self-priming pump are sucked out through the air suction port N1 by the air suction pump until the inlet channel of the vacuum self-priming pump and the water diversion chamber 7 are filled with water. An isolation valve is arranged between the vacuum chamber 2 and the water diversion chamber 7. The isolation valve is characterized in that: the isolation valve adopts an orange peel valve structure, and the orange peel valve comprises a breathing plate, a floating ball 8, and a rubber skin 11. The breathing plate is made of a plurality of breathing holes 4 arranged in the middle position of the partition 3. The middle of the rubber skin 11 is fixedly installed at the center position of the lower plane of the breathing plate, and the two ends are fixedly connected to the floating ball 8. The distribution position of the breathing holes 4 is the inner side of the contact surface between the rubber skin 11 and the breathing plate when the floating ball 8 rises to the highest position. When the water level in the water diversion chamber 7 rises and pushes the float 8 to float up, the rubber skin 11 deforms laterally and gradually increases the contact area with the breathing plate. The breathing holes 4 on the breathing plate are gradually blocked by the rubber skin 11 from the middle to the outside. When the float 8 rises to the highest position, all the breathing holes 4 on the breathing plate are blocked by the rubber skin 11 to prevent sewage from entering the vacuum chamber 2; when the vacuum self-priming pump stops working, the water level in the water diversion chamber 7 drops and air enters. Under the action of the gravity of the float 8, the rubber skin 11 extends and deforms downward, gradually reducing the contact area with the breathing plate, and gradually opening the breathing holes 4 from both sides to the middle, connecting the vacuum chamber 2 with the water diversion chamber 7, avoiding the problem that the isolation valve in the prior art is sucked by the negative pressure of the vacuum chamber and needs to open the isolation valve by manually operating the compensation valve, thereby simplifying the product structure and simplifying the operation. Moreover, through the scientific design of the distribution position of the breathing holes 4, the negative pressure suction force of the breathing holes 4 at the outer edge of the rubber skin 11 on the rubber skin 11 is smaller than the downward pulling force of the float 8 on it, so that the isolation valve can be opened reliably, avoiding the serious problem that the connecting rod mechanism in the prior art is blocked by the accumulation of sewage medium, making the isolation valve unable to be opened and closed flexibly and reliably, thereby damaging the self-priming vacuum pump equipment. The vacuum chamber 2 is connected to the pressure detection port N2.

[0012] The rubber skin 11 adopts a rectangular structure. The shape of the rubber skin 11 can be set according to the distribution shape of the breathing holes 4 on the partition 3.

[0013] The floating ball 8 and the rubber skin 11 are connected by a connecting rod and a fixing plate 5. The lower end of the connecting rod is fixedly connected to the floating ball 8, and the upper end is fixedly connected to the center of the lower end surface of the fixing plate 5. The upper end surface of the fixing plate 5 is fixedly connected to both ends of the rubber skin 11. The two ends of the rubber skin 11 are fixedly installed in the upper plane of the fixing plate 5 by a pressure strip and screws, and the middle is fixedly installed in the lower plane of the breathing plate by a pressure plate and screws.

[0014] The filter screen 6 is fixedly installed on the breathing plate outside the orange peel valve, the float 8 is located at the lower side of the lower end surface of the filter screen 6, and the upper end of the connecting rod is movably inserted into the inner side of the filter screen 6 and connected to the fixed plate 5 to ensure that the float 8 moves flexibly to prevent sewage from blocking the breathing hole 4. The filter screen 6 and the partition 3 are fixedly installed on the upper cover 1 of the water diversion tank by screws.

[0015] A trumpet-shaped floating ball limiting guide cylinder is provided on the lower end surface of the filter screen 6.

Claims

1. A vacuum water diversion box, comprising a box body (10), the box body (10) being separated into a vacuum chamber (2) and a water diversion chamber (7) by a partition (3), a water diversion port (N3) being arranged at the bottom of the water diversion chamber (7) and communicating with an inlet channel of a vacuum self-priming pump, the water diversion port (N3) being arranged on a bottom cover (9) of the water diversion box, the vacuum chamber (2) being provided with an air suction port (N1) communicating with an inlet of an air suction pump, and an isolation valve being arranged between the vacuum chamber (2) and the water diversion chamber (7); wherein: The isolation valve adopts an orange peel valve structure, which comprises a breathing plate, a floating ball (8), and a rubber skin (11). The breathing plate is formed by arranging a plurality of breathing holes (4) in the middle position of a partition (3). The middle of the rubber skin (11) is fixedly installed at the center position of the lower plane of the breathing plate, and the two ends are fixedly connected to the floating ball (8). When the water level in the water diversion chamber (7) rises, the floating ball (8) rises, causing the rubber skin (11) to deform laterally, gradually increasing the contact area with the breathing plate, and the breathing holes (4) on the partition (3) are gradually blocked by the rubber skin (11) from the middle to the outside. When the floating ball (8) rises to the highest position, all the breathing holes (4) on the breathing plate are blocked by the rubber skin (11); when the water level in the water diversion chamber (7) drops, the rubber skin (11) extends and deforms downward under the action of the gravity of the floating ball (8), gradually reducing the contact area with the breathing plate, and gradually opening the breathing holes (4) from both sides to the middle, so as to connect the vacuum chamber (2) with the water diversion chamber (7).

2. The vacuum water tank according to claim 1, characterized in that: The rubber skin (11) adopts a rectangular structure.

3. The vacuum water tank according to claim 2, characterized in that: The floating ball (8) and the rubber skin (11) are connected via a connecting rod and a fixing plate (5); the lower end of the connecting rod is fixedly connected to the floating ball (8), the upper end is fixedly connected to the center of the lower end surface of the fixing plate (5), and the upper end surface of the fixing plate (5) is fixedly connected to both ends of the rubber skin (11).

4. The vacuum water tank according to claim 3 is characterized in that: A filter screen (6) is fixedly mounted on the breathing plate, the filter screen being located outside the rubber skin (11), the float (8) being located below the lower end surface of the filter screen (6), and the upper end of the connecting rod being movably inserted into the inner side of the filter screen (6) and connected to the fixed plate (5).

5. The vacuum water diversion tank according to claim 4 is characterized in that: A trumpet-shaped floating ball limiting guide cylinder is provided on the lower end surface of the filter screen (6).

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