Leakage-proof structure of gear pump

Abstract

The utility model discloses an anti-leakage structure of a gear pump, which relates to the technical field of gear pump equipment and comprises a gear pump main body, an input and output mechanism is arranged outside the gear pump main body, an anti-leakage mechanism is arranged on the left side of the gear pump main body, and the input and output mechanism comprises a high-pressure output pipe. And the output end of the gear pump body fixedly communicates with the right end of the high-pressure output pipe, an output connecting pipe is arranged on the left side of the high-pressure output pipe, and the anti-leakage mechanism comprises a left half liquid storage cylinder. Through the cooperation of a high-pressure output pipe, an output connecting pipe, a left half liquid storage barrel and a right half liquid storage barrel, leaked liquid can be conveniently collected through a liquid storage barrel composed of the left half liquid storage barrel and the right half liquid storage barrel, and then through the cooperation of a water level sensor, a warning lamp, a communicating pipe, a water conveying pipe and a water pump, liquid leakage can be avoided; the water level sensor in the liquid storage cylinder is used for water level detection, leaked liquid is automatically conveyed to the output pipeline of the gear pump again, and the effect of improving the conveying efficiency of the gear pump is achieved.

Description

Technical Field

[0001] This utility model relates to the field of gear pump equipment technology, specifically a gear pump anti-leakage structure. Background Technology

[0002] Gear pumps are rotary pumps that rely on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport or pressurize liquids. A gear pump consists of two gears, a pump body, and front and rear covers forming two enclosed spaces. The pressure at the outlet of a gear pump depends entirely on the magnitude of the resistance at the pump outlet. Gear pumps are widely used in various marine hydraulic machinery.

[0003] Existing gear pump output connections are prone to leaks due to vibrations during operation, which can cause the connecting flange to loosen. This prevents the leaked liquid from being automatically returned to the pump's output pipe and fails to promptly alert maintenance personnel for repairs. Consequently, the leakage flow at the output connection gradually increases, impacting the pump's delivery efficiency. Therefore, we provide a gear pump leak-proof structure to address these issues. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a leak-proof structure for gear pumps.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gear pump anti-leakage structure, comprising a gear pump body, an input / output mechanism externally disposed on the gear pump body, an anti-leakage mechanism disposed on the left side of the gear pump body, the input / output mechanism including a high-pressure output pipe, the output end of the gear pump body being fixedly connected to the right end of the high-pressure output pipe, an output connecting pipe disposed on the left side of the high-pressure output pipe, the anti-leakage mechanism including a left half-liquid storage tank, the outer surface of the output connecting pipe contacting the inner wall of the left half-liquid storage tank, a right half-liquid storage tank sleeved on the outer surface of the high-pressure output pipe, and the right side of the left half-liquid storage tank being connected via... Equally spaced bolts are fixedly connected to the left side of the right half of the liquid storage tank. Two water level sensors and a warning light are fixedly connected to the upper surfaces of both the left and right half of the liquid storage tank. The sensing ends of the two sets of water level sensors pass through the left and right half of the liquid storage tank respectively and extend into the interior of the left and right half of the liquid storage tank. A connecting pipe is fixedly connected to the bottom surface of the left half of the liquid storage tank. The outer surface of the connecting pipe is in contact with the inner wall of the right half of the liquid storage tank. A water delivery pipe is sleeved on the surface of the connecting pipe. A water pump is fixedly connected to the output end of the water delivery pipe. The output end of the water pump passes through the output connecting pipe and extends into the interior of the output connecting pipe.

[0006] Furthermore, two sets of support legs are fixedly connected to the bottom surface of the gear pump body, and a support base plate is fixedly connected to the bottom end of each set of support legs.

[0007] Furthermore, a stabilizing bearing is fixedly embedded on the upper surface of the gear pump body, and the inner ring of the stabilizing bearing is fixedly connected to the output shaft of the gear pump body.

[0008] Furthermore, a low-pressure input pipe is fixedly connected to the input end of the gear pump body, and an input connection pipe is provided on the right side of the low-pressure input pipe.

[0009] Furthermore, the outer surfaces of the low-pressure input pipe, the input connecting pipe, the high-pressure output pipe, and the output connecting pipe are all fixedly connected with connecting flanges, and the two sets of connecting flanges are in contact with each other on their closest sides.

[0010] Furthermore, each set of connecting flanges is internally threaded with connecting bolts arranged in a circular pattern at equal intervals. The ends of the two sets of connecting bolts that are close to each other pass through the two connecting flanges in sequence and extend to both sides of the gear pump body.

[0011] Furthermore, the left side of the left half of the liquid storage cylinder and the right side of the right half of the liquid storage cylinder are both fixedly connected with sliding rings, and the inner walls of the two sliding rings are in contact with the outer surface of the high-pressure output pipe and the outer surface of the output connection pipe, respectively.

[0012] Furthermore, each of the sliding rings has a tightening band fitted on its outer surface, and each tightening band has a tightening bolt threaded inside.

[0013] Compared with existing technologies, this gear pump anti-leakage structure has the following beneficial effects: This utility model, through the combination of a gear pump body, a high-pressure output pipe, an output connecting pipe, a left half-cell, and a right half-cell, allows for convenient installation of the output connecting pipe using flange bolts via the high-pressure output pipe fixed to the output end of the gear pump body. Since high-pressure liquid is output from both the output connecting pipe and the high-pressure output pipe, leakage is prone to occur at the connection point. However, by connecting and fixing the left half-cell and right half-cell together to the outer surfaces of the output connecting pipe and the high-pressure output pipe, leakage can be easily prevented by using the left half-cell... The accumulator, consisting of a liquid cylinder and a right half of the accumulator, collects leaked liquid. Using a water level sensor, warning light, connecting pipe, water delivery pipe, and water pump, the accumulator detects the water level and the warning light illuminates to indicate a leak requiring maintenance. A PLC controller controls the water pump, ensuring that when the water level in the accumulator reaches a certain height, the pump delivers the water through the connecting pipe and water delivery pipe to the output connection pipe. This automatically returns the leaked liquid to the gear pump's output pipe, improving the gear pump's delivery efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the gear pump body of this utility model;

[0015] Figure 2 This is a three-dimensional rear view structural diagram of the low-voltage input tube of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the left half of the liquid storage cylinder of this utility model;

[0017] Figure 4 This is a three-dimensional bottom view of the connecting pipe of this utility model.

[0018] In the diagram: 1. Gear pump body; 2. Input / output mechanism; 201. Stabilizing bearing; 202. Support leg; 203. Support base plate; 204. Low-pressure input pipe; 205. Input connecting pipe; 206. High-pressure output pipe; 207. Output connecting pipe; 208. Connecting flange; 209. Connecting bolt; 3. Leakage prevention mechanism; 301. Left half of the liquid storage tank; 302. Right half of the liquid storage tank; 303. Water level sensor; 304. Warning light; 305. Sliding ring; 306. Tightening belt; 307. Tightening bolt; 308. Connecting pipe; 309. Water delivery pipe; 310. Water pump. Detailed Implementation

[0019] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0020] This embodiment provides a gear pump anti-leakage structure. This device is used to prevent leakage in the output pipe connection of the gear pump. It can collect the leaked liquid and automatically return the leaked liquid to the output pipe of the gear pump.

[0021] Reference Figure 1 and Figure 2 A gear pump anti-leakage structure includes a gear pump body 1. Two sets of support legs 202 are fixedly connected to the bottom surface of the gear pump body 1. Each set of support legs 202 is fixedly connected to a support base plate 203 at its bottom end. The two sets of support legs 202 and the support base plate 203 form a stable support structure, which can conveniently support the gear pump body 1 in the required position.

[0022] Reference Figure 1 and Figure 2 A stabilizing bearing 201 is fixedly embedded on the upper surface of the gear pump body 1. The inner ring of the stabilizing bearing 201 is fixedly connected to the output shaft of the gear pump body 1. Through the stabilizing bearing 201, the output shaft of the gear pump body 1 can rotate stably, thereby enabling the gear pump to operate stably.

[0023] Reference Figure 1 and Figure 2 An input / output mechanism 2 is provided on the outside of the gear pump body 1. A leak-proof mechanism 3 is provided on the left side of the gear pump body 1. The input / output mechanism 2 includes a high-pressure output pipe 206. The output end of the gear pump body 1 is fixedly connected to the right end of the high-pressure output pipe 206. An output connection pipe 207 is provided on the left side of the high-pressure output pipe 206. A low-pressure input pipe 204 is fixedly connected to the input end of the gear pump body 1. An input connection pipe 205 is provided on the right side of the low-pressure input pipe 204. Through the connection between the low-pressure input pipe 204 and the input connection pipe 205, the input connection pipe 205 can be used to connect with the external pipeline. Low-pressure liquid can be conveniently delivered into the gear pump body 1 through the low-pressure input pipe 204, so that high-pressure liquid can be output through the high-pressure output pipe 206 when the gear pump body 1 is working.

[0024] Reference Figure 1 and Figure 2 Connecting flanges 208 are fixedly connected to the outer surfaces of the low-pressure input pipe 204, the input connecting pipe 205, the high-pressure output pipe 206, and the output connecting pipe 207. The two sets of connecting flanges 208 are in contact with each other on their closest sides. By using the connecting flanges 208, the low-pressure input pipe 204 can be connected to the input connecting pipe 205, and the high-pressure output pipe 206 can be connected to the output connecting pipe 207, thereby facilitating the use of the gear pump to input low-pressure liquid and output high-pressure liquid.

[0025] Reference Figure 2Each set of connecting flanges 208 has internal threaded connections with equidistantly arranged circumferential connecting bolts 209. The ends of the two sets of connecting bolts 209 that are close to each other pass through the two connecting flanges 208 and extend to both sides of the gear pump body 1. The two sets of connecting bolts 209 can be used to connect the two corresponding sets of connecting flanges 208, thus facilitating the use of the gear pump.

[0026] Reference Figure 1 , Figure 3 and Figure 4 The anti-leakage mechanism 3 includes a left half-liquid storage tank 301. The outer surface of the output connecting pipe 207 is in contact with the inner wall of the left half-liquid storage tank 301. The outer surface of the high-pressure output pipe 206 is fitted with a right half-liquid storage tank 302. The right side of the left half-liquid storage tank 301 is fixedly connected to the left side of the right half-liquid storage tank 302 by bolts arranged at equal intervals. Sliding rings 305 are fixedly connected to both the left side of the left half-liquid storage tank 301 and the right side of the right half-liquid storage tank 302. The inner walls of the two sliding rings 305 are in contact with the outer surfaces of the high-pressure output pipe 206 and the output connecting pipe 207, respectively. Through the sliding rings 305, the contact points between the sliding rings 305 and the outer surfaces of the high-pressure output pipe 206 and the output connecting pipe 207 can be squeezed and sealed. A sealing structure is set at the contact points to prevent liquid leakage between the sliding rings 305 and the outer surfaces of the high-pressure output pipe 206 and the output connecting pipe 207.

[0027] Reference Figure 1 , Figure 3 and Figure 4Two water level sensors 303 and a warning light 304 are fixedly connected to the upper surfaces of the left half-liquid storage tank 301 and the right half-liquid storage tank 302, respectively. The water level sensor 303 detects the oil level by converting the change in capacitance between the sensor housing and the sensing electrode caused by oil entering the container into a change in current. The water level sensor 303 is model DP-PTH601. The warning light 304 is a light that emits a warning light. The sensing ends of the two sets of water level sensors 303 pass through the left half-liquid storage tank 301 and the right half-liquid storage tank 302, respectively, and extend into the interiors of the left half-liquid storage tank 301 and the right half-liquid storage tank 302. A connecting pipe 308 is fixedly connected to the bottom surface of the left half-liquid storage tank 301, and the outer surface of the connecting pipe 308 is in contact with the inner wall of the right half-liquid storage tank 302. A water supply pipe 309 is fitted onto the surface of the connecting pipe 308. The output end of the water supply pipe 309 is fixedly connected to a water pump 310. The water pump 310 is a machine for transporting or pressurizing liquid. The model of the water pump 310 is IS100-80-160A. The output end of the water pump 310 passes through the output connecting pipe 207 and extends into the interior of the output connecting pipe 207. A tightening band 306 is fitted onto the outer surface of each sliding ring 305. A tightening bolt 307 is threaded into the interior of each tightening band 306. By manually twisting the tightening bolt 307, the two ends of the tightening band 306 can be brought closer together, thereby tightening the sliding ring 305 with the tightening band 306, which can improve the sealing performance of the connection between the sliding ring 305 and the outer surface of the high-pressure output pipe 206 and the outer surface of the output connecting pipe 207.

[0028] Working principle: When in use, first connect the gear pump body 1, water level sensor 303, warning light 304 and water pump 310 to the power supply. When it is necessary to use the anti-leakage structure to prevent liquid leakage at the output connection of the gear pump, the support base plate 203 can be fixed in the required position through the fixing structure. Then, the gear pump body 1 can be stably supported in the required position through the support structure composed of two sets of support legs 202 and support base plate 203.

[0029] Next, the connecting flanges 208 fixed to the outside of the input connecting pipe 205 and the output connecting pipe 207 are manually set to correspond to the connecting flanges 208 fixed to the outside of the low-pressure input pipe 204 and the high-pressure output pipe 206, respectively. Two sets of connecting bolts 209 are passed through the two connecting flanges 208 respectively, so that the input connecting pipe 205 can be connected to one end of the low-pressure input pipe 204, and the output connecting pipe 207 can be fixed to one end of the high-pressure output pipe 206. Since the input connecting pipe 205 is connected to the external low-pressure liquid pipeline, it is convenient to use the low-pressure input pipe 204 to deliver low-pressure liquid into the gear pump body 1. By controlling the power supply of the gear pump body 1, it is convenient to use the high-pressure output pipe 206 and the output connecting pipe 207 to deliver high-pressure liquid to the outside.

[0030] Simultaneously, the left half-liquid storage tank 301 and the right half-liquid storage tank 302, which are fitted over the high-pressure output pipe 206 and the output connecting pipe 207, are brought close to each other by manual means, and bolts are used to connect the left half-liquid storage tank 301 and the right half-liquid storage tank 302 together. By manually using two sliding rings 305 fixed on one side of the left half-liquid storage tank 301 and the right half-liquid storage tank 302, the two sliding rings 305 can be brought into contact with the outer surfaces of the high-pressure output pipe 206 and the output connecting pipe 207 respectively. By manually twisting the tightening bolts 307 inside the tightening belt 306, the tightening belt 306 can be tightened, thereby tightening the contact between the two sliding rings 305 and the outer surfaces of the high-pressure output pipe 206 and the output connecting pipe 207. At this time, the liquid leakage at the connection between the high-pressure output pipe 206 and the output connecting pipe 207 can be collected by the liquid storage tank composed of the left half-liquid storage tank 301 and the right half-liquid storage tank 302.

[0031] The liquid level in the storage tank is detected by the water level sensor 303. When liquid is detected, the warning light 304 is activated by the PLC controller to remind the worker that there is a leak and maintenance is required. When the liquid level reaches the maximum set value, the water pump 310 is activated by the PLC controller to transport the liquid in the storage tank to the output connection pipe 207 through the connecting pipe 308 and the water supply pipe 309. This leak-proof structure can prevent liquid leakage at the output connection of the gear pump.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gear pump anti-leakage structure, comprising a gear pump body (1), characterized in that: An input / output mechanism (2) is provided on the outside of the gear pump body (1). A leak-proof mechanism (3) is provided on the left side of the gear pump body (1). The input / output mechanism (2) includes a high-pressure output pipe (206). The output end of the gear pump body (1) is fixedly connected to the right end of the high-pressure output pipe (206). An output connection pipe (207) is provided on the left side of the high-pressure output pipe (206). The leak-proof mechanism (3) includes a left half-liquid tank (301). The outer surface of the output connection pipe (207) is in contact with the inner wall of the left half-liquid tank (301). A right half-liquid tank (302) is sleeved on the outer surface of the high-pressure output pipe (206). The right side of the left half-liquid tank (301) is fixedly connected to the left side of the right half-liquid tank (302) by bolts arranged at equal intervals. The left half-liquid tank (301) is fixedly connected to the left side of the right half-liquid tank (302) by bolts arranged at equal intervals. Two water level sensors (303) and a warning light (304) are fixedly connected to the upper surface of the left half of the liquid storage tank (301) and the upper surface of the right half of the liquid storage tank (302). The sensing ends of the two sets of water level sensors (303) pass through the left half of the liquid storage tank (301) and the right half of the liquid storage tank (302) respectively and extend into the interior of the left half of the liquid storage tank (301) and the interior of the right half of the liquid storage tank (302). The bottom surface of the left half of the liquid storage tank (301) is fixedly connected to a connecting pipe (308). The outer surface of the connecting pipe (308) is in contact with the inner wall of the right half of the liquid storage tank (302). A water supply pipe (309) is sleeved on the surface of the connecting pipe (308). The output end of the water supply pipe (309) is fixedly connected to a water pump (310). The output end of the water pump (310) passes through the output connecting pipe (207) and extends into the interior of the output connecting pipe (207).

2. The gear pump anti-leakage structure according to claim 1, characterized in that: The bottom surface of the gear pump body (1) is fixedly connected to two sets of support legs (202), and the bottom end of each set of support legs (202) is fixedly connected to a support base plate (203).

3. The gear pump anti-leakage structure according to claim 1, characterized in that: A stabilizing bearing (201) is fixedly embedded on the upper surface of the gear pump body (1), and the inner ring of the stabilizing bearing (201) is fixedly connected to the output shaft of the gear pump body (1).

4. The gear pump anti-leakage structure according to claim 1, characterized in that: The input end of the gear pump body (1) is fixedly connected to a low-pressure input pipe (204), and an input connection pipe (205) is provided on the right side of the low-pressure input pipe (204).

5. The gear pump anti-leakage structure according to claim 4, characterized in that: The outer surfaces of the low-pressure input pipe (204), the input connecting pipe (205), the high-pressure output pipe (206), and the output connecting pipe (207) are all fixedly connected with connecting flanges (208), and the two sets of connecting flanges (208) are in contact with each other on their closest sides.

6. The gear pump anti-leakage structure according to claim 5, characterized in that: Each set of connecting flanges (208) has internal threaded connecting bolts (209) arranged in a circular pattern at equal intervals. The ends of the two sets of connecting bolts (209) that are close to each other pass through the two connecting flanges (208) and extend to both sides of the gear pump body (1).

7. The gear pump anti-leakage structure according to claim 1, characterized in that: The left side of the left half of the liquid storage tank (301) and the right side of the right half of the liquid storage tank (302) are both fixedly connected to sliding rings (305). The inner walls of the two sliding rings (305) are in contact with the outer surface of the high-pressure output pipe (206) and the outer surface of the output connection pipe (207), respectively.

8. The gear pump anti-leakage structure according to claim 7, characterized in that: Each of the sliding rings (305) has a tightening band (306) fitted on its outer surface, and each of the tightening bands (306) has a tightening bolt (307) threaded inside.

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