Mining centrifugal multi-stage pump exhaust device

Abstract

The utility model discloses a mining centrifugal multistage pump exhaust device which comprises an exhaust assembly arranged on a centrifugal pump exhaust hole supported on the ground through a base, the exhaust assembly comprises a connecting pipe and a sealing ring, the connecting pipe is connected with the centrifugal pump exhaust hole through a bolt, the sealing ring is arranged on the inner wall of the connecting pipe, and the sealing ring is arranged on the inner wall of the connecting pipe. The side wall of the connecting pipe communicates with a water guide pipe, the water guide pipe communicates with a drainage ditch in the base, the water inlet end of the centrifugal pump is connected with a water storage tank through a water conveying pipe, a water guide pump is arranged at the joint of the water conveying pipe and the water storage tank, and an electric valve is arranged in the middle of the water conveying pipe. According to the utility model, the water guide pipe is arranged, so that water in the exhaust channel can be guided into the drainage ditch in the base, and the water is prevented from flowing out from the upper part of the first supporting pipe and dripping on a centrifugal pump or a pipeline to cause rusting.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to an exhaust device of a centrifugal multi-stage pump for mining. Background Art

[0002] As one of the "eight major" systems in underground mines, the drainage system plays a vital role in the safe production of mines. The reliable and stable operation of the drainage system is a prerequisite for the normal production of mines and the prevention of "flooding". The underground centrifugal water pump is a key component of the deep mine drainage system. It directly affects the reliability and stability of the drainage system. Before the centrifugal water pump is started, a certain vacuum degree is required in the water pump. Generally, in order to ensure the vacuum degree in the water pump, water is filled into the pump, commonly known as adding water to exhaust.

[0003] After searching, the Chinese patent publication number CN210371189U discloses an automatic exhaust device for a centrifugal pump, including a first support tube and a support top plate, the outer walls on both sides of the top of the first support tube are fixedly installed with vertically arranged first support rods, and the top outer walls of the two first support rods are installed on the outer walls on both sides of the bottom of the support top plate by bolts.

[0004] This patent is provided with a water flow sensor, a first electromagnet and a second electromagnet. When the centrifugal pump is in use, water needs to be injected into the pump. When the gas in the pump is exhausted, the water will flow through the first support tube. At this time, the water flow sensor will give a control signal to the controller, and the controller will control the first electromagnet and the second electromagnet to attract each other, so as to achieve a stable fixed seal of the first support block and the second support block, and avoid water leakage from the first support tube, without manual switch adjustment for exhaust every time; but after the exhaust is completed, water will remain inside the first support tube above the first sealing gasket, and the remaining water will easily flow out from the top of the first support tube and drip onto the centrifugal pump or the pipeline, causing rust. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a centrifugal multi-stage pump exhaust device for mining.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A centrifugal multi-stage pump exhaust device for mining, including an exhaust assembly arranged on the exhaust hole of a centrifugal pump supported on the ground by a base, the exhaust assembly including a connecting pipe and a sealing ring, the connecting pipe is connected to the exhaust hole of the centrifugal pump by bolts, the sealing ring is arranged on the inner wall of the connecting pipe, the side wall of the connecting pipe is connected with a water pipe, the water pipe is connected to the drainage ditch inside the base, and the connecting end of the water pipe and the connecting pipe is located above the sealing ring.

[0008] As a further solution of the utility model: the water inlet end of the centrifugal pump is connected to a water tank through a water pipe, a water diversion pump is arranged at the connection between the water pipe and the water tank, and an electric valve is arranged in the middle section of the water pipe.

[0009] As a further solution of the utility model: installation cavities are opened on both sides of the top end of the connecting pipe, and electric telescopic rods are fixed inside the installation cavities.

[0010] As a further solution of the utility model: the telescopic ends of the two electric telescopic rods are fixed with a same connecting plate, and the outer wall of the bottom end of the connecting plate is connected to a sealing block tightly matched with the sealing ring through a connecting rod.

[0011] As a further solution of the utility model: closing plates are fixed on both sides of the outer walls at the upper and lower ends of the connecting plate, the closing plates are slidably matched with the connecting pipe, and a water flow sensor is fixed on the inner wall of the connecting pipe.

[0012] As a further solution of the utility model: a sewage outlet is arranged on one side of the bottom end of the water storage tank, a fixed pipe is fixed inside the water storage tank, the top end of the fixed pipe is connected to the water inlet pipe, and a plurality of water spray heads are arranged on the outer wall of the fixed pipe.

[0013] As a further solution of the utility model: the water spray head includes a fixed frame and a rotating block, the fixed frame is fixed to the outer wall of the fixed pipe, and the rotating block is slidably matched with the inner wall of the fixed frame.

[0014] As a further solution of the utility model: the outer wall of the rotating block is connected to a plurality of water spray pipes, the nozzles of the water spray pipes are inclined and staggered with the axis of the fixed pipe, and the inner wall of the water tank is provided with a water level sensor.

[0015] Compared with the prior art, the utility model provides a centrifugal multi-stage pump exhaust device for mining, which has the following beneficial effects:

[0016] 1. The utility model is provided with a water guide pipe, which can guide the water in the exhaust channel into the drainage ditch located inside the base, thereby preventing the water from flowing out from above the first support tube and dripping onto the centrifugal pump or the pipeline, causing rust.

[0017] 2. The utility model is provided with a water level sensor to detect the amount of water in the water tank in real time, and to replenish the water for water diversion and exhaust into the water tank in time.

[0018] 3. The utility model is provided with a water spray head, and utilizes the recoil of water sprayed from the water spray pipe as a driving force to drive the rotating block to rotate and change the position of the water column. The sprayed water column will flush and clean the inner wall of the water storage tank to a certain extent during the rotation of the rotating block.

[0019] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a centrifugal multi-stage pump exhaust device for mining proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of an exhaust component of a centrifugal multi-stage pump exhaust device for mining proposed by the utility model;

[0022] Figure 3 It is a side sectional view of an exhaust component of a centrifugal multi-stage pump exhaust device for mining proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of a water storage tank of a centrifugal multi-stage pump exhaust device for mining proposed by the utility model;

[0024] Figure 5 This is a partial enlarged view of a water spray head of a centrifugal multi-stage pump exhaust device for mining proposed by the utility model;

[0025] Figure 6 The utility model is a top sectional view of a water storage tank of a centrifugal multi-stage pump exhaust device for mining.

[0026] In the figure: 1. base; 2. centrifugal pump; 3. exhaust assembly; 4. water guide pipe; 5. water delivery pipe; 6. electric valve; 7. water storage tank; 8. water diversion pump; 9. fixed pipe; 10. sprinkler head; 11. sewage outlet; 12. water level sensor; 13. fixed frame; 14. rotating block; 15. sprinkler pipe; 16. connecting pipe; 17. sealing block; 18. connecting plate; 19. connecting rod; 20. electric telescopic rod; 21. installation cavity; 22. closing plate; 23. water flow sensor; 24. sealing ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] Example 1

[0030] A centrifugal multistage pump exhaust device for mining, such as Figures 1 to 3 As shown, it includes an exhaust assembly 3 arranged on the exhaust hole of a centrifugal pump 2 supported on the ground by a base 1, the water inlet end of the centrifugal pump 2 is connected to a water storage tank 7 through a water delivery pipe 5, the water storage tank 7 is connected to a drainage well through a water inlet assembly, a water diversion pump 8 is arranged at the connection between the water delivery pipe 5 and the water storage tank 7, an electric valve 6 is arranged in the middle section of the water delivery pipe 5, the exhaust assembly 3 includes a connecting pipe 16 and a sealing ring 24, the connecting pipe 16 is connected to the exhaust hole of the centrifugal pump 2 by bolts, the sealing ring 24 is arranged on the inner wall of the connecting pipe 16, and installation cavities 21 are opened on both sides of the top of the connecting pipe 16, and the installation cavity 21 An electric telescopic rod 20 is fixed inside, and the telescopic ends of the two electric telescopic rods 20 are fixed with the same connecting plate 18. The outer wall of the bottom end of the connecting plate 18 is connected to a sealing block 17 that is tightly matched with a sealing ring 24 through a connecting rod 19. Closing plates 22 are fixed on both sides of the outer walls of the upper and lower ends of the connecting plate 18. The closing plate 22 is slidably matched with the connecting pipe 16. A water flow sensor 23 is fixed to the inner wall of the connecting pipe 16. The side wall of the connecting pipe 16 is connected with a water pipe 4, and the water pipe 4 is connected to the drainage ditch inside the base 1. The connecting end of the water pipe 4 and the connecting pipe 16 is located above the sealing ring 24.

[0031] When exhausting, the electric telescopic rod 20 pushes the connecting plate 18 downward to disengage the sealing block 17 from the sealing ring 24, thereby releasing the seal on the inside of the connecting pipe 16. At this time, the sealing plate 22 moves downward with the connecting plate 18 to block the side of the installation cavity 21 to prevent water from entering the installation cavity 21 during exhaust. When the sealing block 17 is completely separated from the sealing ring 24, the water pump 8 is started to inject the water inside the water storage tank 7 into the centrifugal pump 2 through the water pipe 4. As the amount of water in the centrifugal pump 2 gradually increases, the air in the centrifugal pump 2 is gradually discharged through the connecting pipe 16. When the air in the centrifugal pump 2 is completely discharged, water flows into the inside of the connecting pipe 16. The water flow sensor 23 detects the presence of water flow in the connecting pipe 16, the water pump 8 stops, and the electric valve 6 closes the water pipe 4. At the same time, the electric telescopic rod 20 pulls the sealing block 17 upward to close the sealing ring 24. The water above the sealing ring 24 is discharged through the water pipe 4 and flows into the drainage well through the drainage ditch inside the base 1.

[0032] By providing the water guide pipe 4, the water in the exhaust channel can be guided into the drainage ditch inside the base 1, so as to prevent the water from flowing out from above the first support pipe and dripping onto the centrifugal pump 2 or the pipeline, thereby causing rust.

[0033] Example 2

[0034] A centrifugal multi-stage pump exhaust device for mining, based on Example 1, this embodiment makes the following improvements, such as Figures 3 to 6 As shown, a sewage outlet 11 is provided on one side of the bottom end of the water storage tank 7, a fixed pipe 9 is fixed inside the water storage tank 7, the top end of the fixed pipe 9 is connected to the water inlet pipe, a plurality of water spray heads 10 are provided on the outer wall of the fixed pipe 9, the water spray heads 10 include a fixed frame 13 and a rotating block 14, the fixed frame 13 is fixed to the outer wall of the fixed pipe 9, the rotating block 14 is slidably matched with the inner wall of the fixed frame 13, the outer wall of the rotating block 14 is connected to a plurality of water spray pipes 15, the nozzles of the water spray pipes 15 are inclined and staggered with the axis of the fixed pipe 9, and a water level sensor 12 is provided on the inner wall of the water storage tank 7.

[0035] When the water level sensor 12 detects that the water level in the water tank 7 is low, the external water inlet component inputs the water in the drainage well into the water tank 7 through the fixed pipe 9 and the sprinkler head 10. After the water tank 7 has been used for a period of time, the water in the water tank 7 is emptied and water is supplied to the water tank 7 through the external water inlet component. Since the rotating block 14 is slidably matched with the fixed frame 13, and the nozzle of the sprinkler pipe 15 is tilted and staggered with the axis of the fixed pipe 9, when water is sprayed from the sprinkler pipe 15, it will push the rotating block 14 to rotate and change the position of the water column. The water column sprayed by the sprinkler pipe 15 will flush and clean the inner wall of the water tank 7 during the rotation of the rotating block 14, and the sewage generated by the cleaning will be discharged through the sewage outlet 11.

[0036] By providing a water level sensor 12, the amount of water in the water tank 7 can be detected in real time, and the water used for water diversion and exhaust can be added to the water tank 7 in time.

[0037] By setting up a water spray head 10, the recoil of water sprayed from the water spray pipe 15 is used as a driving force to drive the rotating block 14 to rotate and change the position of the water column. The sprayed water column will flush and clean the inner wall of the water tank 7 during the rotation of the rotating block 14.

[0038] Working principle: When exhausting, the electric telescopic rod 20 pushes the connecting plate 18 downward to disengage the sealing block 17 from the sealing ring 24, thereby releasing the seal on the inside of the connecting pipe 16. At this time, the sealing plate 22 moves downward with the connecting plate 18 to seal the side of the installation cavity 21 to prevent water from entering the installation cavity 21 during exhaust. When the sealing block 17 is completely separated from the sealing ring 24, the water pump 8 is started to inject the water inside the water tank 7 into the centrifugal pump 2 through the water pipe 4. As the amount of water in the centrifugal pump 2 gradually increases, the air in the centrifugal pump 2 is gradually discharged through the connecting pipe 16. When the air in the centrifugal pump 2 is completely discharged, water flows into the inside of the connecting pipe 16. The water flow sensor 23 detects the presence of water flow in the connecting pipe 16, the water pump 8 stops, the electric valve 6 closes the water pipe 4, and at the same time, the electric telescopic rod 20 pulls the sealing block 17 upward to seal The sealing ring 24 is closed, and the water above the sealing ring 24 is discharged through the water pipe 4 and flows into the drainage well through the drainage ditch inside the base 1; when the water level sensor 12 detects that the water level in the water tank 7 is low, the external water inlet component inputs the water in the drainage well into the water tank 7 through the fixed pipe 9 and the water spray head 10. After the water tank 7 has been used for a period of time, the water in the water tank 7 is emptied, and water is supplied to the water tank 7 through the external water inlet component. Since the rotating block 14 and the fixed frame 13 are slidably matched, and the nozzle of the water spray pipe 15 is inclined and staggered with the axis of the fixed pipe 9, when water is sprayed from the water spray pipe 15, it will push the rotating block 14 to rotate and change the position of the water column. The water column sprayed by the water spray pipe 15 will flush and clean the inner wall of the water tank 7 during the rotation of the rotating block 14, and the sewage generated by the cleaning will be discharged through the sewage outlet 11.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A centrifugal multistage pump exhaust device for mining, comprising an exhaust assembly (3) arranged on an exhaust hole of a centrifugal pump (2) supported on the ground by a base (1), characterized in that: The exhaust assembly (3) comprises a connecting pipe (16) and a sealing ring (24); the connecting pipe (16) is connected to the exhaust hole of the centrifugal pump (2) by means of bolts; the sealing ring (24) is arranged on the inner wall of the connecting pipe (16); the side wall of the connecting pipe (16) is connected to a water pipe (4); the water pipe (4) is connected to a drainage ditch inside the base (1); and the connecting end of the water pipe (4) and the connecting pipe (16) is located above the sealing ring (24).

2. A centrifugal multi-stage pump exhaust device for mining according to claim 1, characterized in that: The water inlet end of the centrifugal pump (2) is connected to a water storage tank (7) via a water delivery pipe (5); a water diversion pump (8) is provided at the connection between the water delivery pipe (5) and the water storage tank (7); and an electric valve (6) is provided in the middle section of the water delivery pipe (5).

3. A centrifugal multi-stage pump exhaust device for mining according to claim 1, characterized in that: Installation cavities (21) are provided on both sides of the top end of the connecting tube (16), and an electric telescopic rod (20) is fixed inside the installation cavity (21).

4. A centrifugal multi-stage pump exhaust device for mining according to claim 3, characterized in that: The telescopic ends of the two electric telescopic rods (20) are fixed with a same connecting plate (18), and the outer wall of the bottom end of the connecting plate (18) is connected to a sealing block (17) which is tightly matched with a sealing ring (24) through a connecting rod (19).

5. A centrifugal multi-stage pump exhaust device for mining according to claim 4, characterized in that: Closing plates (22) are fixed on both sides of the outer walls at the upper and lower ends of the connecting plate (18), the closing plate (22) is slidably matched with the connecting pipe (16), and a water flow sensor (23) is fixed on the inner wall of the connecting pipe (16).

6. A centrifugal multi-stage pump exhaust device for mining according to claim 2, characterized in that: A sewage outlet (11) is provided at one side of the bottom end of the water storage tank (7), a fixed pipe (9) is fixed inside the water storage tank (7), the top end of the fixed pipe (9) is connected to the water inlet pipe, and a plurality of water spray heads (10) are provided on the outer wall of the fixed pipe (9).

7. A centrifugal multi-stage pump exhaust device for mining according to claim 6, characterized in that: The water spray head (10) comprises a fixed frame (13) and a rotating block (14); the fixed frame (13) is fixed to the outer wall of the fixed pipe (9); and the rotating block (14) is slidably matched with the inner wall of the fixed frame (13).

8. A mining centrifugal multi-stage pump exhaust device according to claim 7, characterized in that: The outer wall of the rotating block (14) is connected to a plurality of water spray pipes (15), the spray ports of the water spray pipes (15) are inclined and staggered with respect to the axis of the fixed pipe (9), and the inner wall of the water storage tank (7) is provided with a water level sensor (12).

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