Axially split pump pressure testing machine

Abstract

The utility model belongs to the technical field of pressure test, and particularly relates to an axially split pump pressure test machine, which comprises a machine tool, a left oil cylinder, a right oil cylinder and a placing platform arranged between the left oil cylinder and the right oil cylinder are arranged on the machine tool, the placing platform is driven by a power device to move vertically, the left oil cylinder and the right oil cylinder respectively comprise a cylinder body arranged on the machine tool, and the left oil cylinder and the right oil cylinder are arranged on the machine tool. A piston is slidably arranged in the cylinder body in the transverse direction, a pressing rod is arranged on the side, close to the containing platform, of the piston, a connecting rod is arranged on the other side of the piston, the piston, the pressing rod and the connecting rod are hollow to form a water passing channel, the outer end of the pressing rod extends out of the cylinder body to be connected with a pressing disc, and the outer end of the connecting rod extends out of the cylinder body to be connected with a water inlet pipe. The device is simple to operate, time-saving, labor-saving and high in working efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure test technical field, especially a middle open pump pressure testing machine. BACKGROUND

[0002] The middle open pump (middle open type circulation) is also called single-stage double-suction centrifugal pump, and its main feature is large flow of conveyed medium. The working principle of the middle open pump is as follows: an impeller is installed in a pump shell and is fastened on a pump shaft, and the pump shaft is directly driven by a motor. The pump shell is centrally provided with a liquid suction inlet connected with a suction pipe. The liquid enters the pump through a bottom valve and the suction pipe. A liquid discharge outlet on the pump shell is connected with a discharge pipe.

[0003] When the pump shell is mass-produced, the pump shell needs to be tested by water pressure on a water pressure testing machine. At present, when the pump shell is tested by water pressure, the pressure plate needs to be fixed on the inlet and outlet of the pump shell by screws to seal the inlet and outlet of the pump shell, and then water is poured into the opening of the pressure plate. However, the pressure plate is fixed by screws, which is troublesome, time-consuming and laborious, and has low working efficiency. SUMMARY

[0004] The utility model discloses a middle open pump pressure testing machine, which is simple to operate, time-saving and labor-saving, and has high working efficiency.

[0005] The utility model discloses a middle open pump pressure testing machine, which is simple to operate, time-saving and labor-saving, and has high working efficiency.

[0006] A middle open pump pressure testing machine, comprising a machine tool, wherein a left oil cylinder, a right oil cylinder and a placing platform arranged between the left oil cylinder and the right oil cylinder are arranged on the machine tool, the placing platform is vertically moved by a power device, the left oil cylinder and the right oil cylinder each comprise a cylinder body arranged on the machine tool, a piston is slidably arranged in the cylinder body in a transverse direction, a pressure rod is arranged on one side of the piston close to the placing platform, and a connecting rod is arranged on the other side of the piston, the piston, the pressure rod and the connecting rod are hollow to form a water passage, the pressure rod is connected with a pressure plate outside the cylinder body, and the connecting rod is connected with a water inlet pipe outside the cylinder body.

[0007] In the middle open pump pressure testing machine, mounting through holes matched with the pressure rods are arranged on the pressure plates, and the pressure rods are screwed with the mounting through holes.

[0008] In the middle open pump pressure testing machine, the machine tool comprises a horizontal mounting plate and a longitudinal mounting plate one arranged on the left and right sides of the horizontal mounting plate, the placing platform is arranged above the horizontal mounting plate, a longitudinal mounting plate two is arranged in parallel on the side of the longitudinal mounting plate one away from the placing platform, and the cylinder bodies are respectively arranged on the corresponding longitudinal mounting plate one and longitudinal mounting plate two.

[0009] In one of the above-mentioned middle-split pump pressure testing machines, the pressure plate is provided with a guide rod, the longitudinal mounting plate one and the longitudinal mounting plate two are connected with a horizontal mounting plate, the horizontal mounting plate is provided with a guide rod mounting plate, and the guide rod is slidably arranged on the guide rod mounting plate.

[0010] In one of the above-mentioned middle-split pump pressure testing machines, each pressure plate is provided with two guide rods, and the two guide rods are respectively arranged on the front and rear sides of the cylinder body. Correspondingly, the longitudinal mounting plate one and the longitudinal mounting plate two are connected with two horizontal mounting plates.

[0011] In one of the above-mentioned middle-split pump pressure testing machines, the two longitudinal mounting plates one are connected with a baffle, and the baffle is provided with two baffles and is respectively arranged on the front and rear sides of the horizontal mounting plate. The horizontal mounting plate, the two longitudinal mounting plates one, and the two baffles enclose a water receiving space. The horizontal mounting plate is provided below with a water receiving tank, and the horizontal mounting plate is provided with a water leakage hole communicating the water receiving space and the water receiving tank.

[0012] In one of the above-mentioned middle-split pump pressure testing machines, the water leakage hole is in a strip shape, and the length direction is arranged along the horizontal direction. The water leakage hole is arranged along the vertical direction and is spaced apart by two or more.

[0013] In one of the above-mentioned middle-split pump pressure testing machines, the power device includes a rotary motor arranged at the bottom of the horizontal mounting plate. The rotary motor is connected with a longitudinal connecting rod through a rotating shaft. The front and rear ends of the longitudinal connecting rod are respectively connected with a horizontal connecting rod. The horizontal connecting rod is provided with two or more worm gears. The worm gears are connected with a worm arranged along the vertical direction. The upper end of the worm passes through the horizontal mounting plate and is connected with a placing platform.

[0014] In one of the above-mentioned middle-split pump pressure testing machines, the rotary motor is arranged between the two horizontal connecting rods, and the rotating shaft of the rotary motor is arranged along the horizontal direction. The rotating shaft of the rotary motor and the longitudinal connecting rod are connected through a bevel gear. The longitudinal connecting rod and the horizontal connecting rod are also connected through a bevel gear.

[0015] In one of the above-mentioned middle-split pump pressure testing machines, the power device can also be an oil cylinder, a linear module, or a linear motor.

[0016] In one of the above-mentioned middle-split pump pressure testing machines, the front and rear sides of the horizontal mounting plate are respectively provided with vertical plates. The front and rear ends of the longitudinal mounting plate one and the longitudinal mounting plate two are respectively connected with the corresponding vertical plates. The lower surface of the horizontal mounting plate is higher than the lower surface of the vertical plate, and forms a space for mounting the power device. The middle part of the vertical plate is provided with a gap. The gap is provided with a door plate moving along the horizontal direction.

[0017] In one of the above-mentioned middle-split pump pressure testing machines, the baffle and the vertical plate are in the same plane and are in an integrated structure.

[0018] In the above-mentioned one open pump pressure testing machine, the upper cover of the cylinder is provided with a stainless steel plate connected to the longitudinal mounting plate one, the longitudinal mounting plate two and the upper end of the vertical plate.

[0019] In the above-mentioned one open pump pressure testing machine, the left and right ends of the machine tool are respectively covered with protective covers, and the outer end of the connecting rod is arranged in the protective cover.

[0020] In the above-mentioned one open pump pressure testing machine, the surface of the pressure plate away from the cylinder is provided with an annular groove, and a plurality of annular grooves are arranged along the radial direction of the pressure plate.

[0021] In the above-mentioned one open pump pressure testing machine, the water inlet pipe is connected to the water storage tank through the water pump.

[0022] In the above-mentioned one open pump pressure testing machine, a console is further included, and the left oil cylinder, the right oil cylinder and the power device are respectively electrically connected to the console.

[0023] In the above-mentioned one open pump pressure testing machine, the water pump is electrically connected to the console.

[0024] The utility model discloses an outstanding advantage compared with prior art is:

[0025] 1. The utility model discloses left oil cylinder and right oil cylinder are set up, and drive the pressure plate to press the both sides opening of open pump pump shell through left oil cylinder and right oil cylinder, simple operation, save time and effort, and work efficiency is high, and the piston, the connecting rod and the hollow inside of pressure rod form the water passage, and the water passes through the water passage and enters open pump pump shell, and the structure is simple, convenient to install and operate, and the placing platform vertical movement is driven through power device simultaneously, can be adapted to different models open pump pump shell, and the adaptability is high.

[0026] 2. The utility model discloses that the horizontal mounting plate, two longitudinal mounting plate one and two baffle enclose the water receiving space, be equipped with the water receiving tank below the horizontal mounting plate, be equipped with the water leakage hole that links the water receiving space and the water receiving tank on the horizontal mounting plate, effectively avoid the water flow in open pump pump shell after testing to ground. DRAWINGS:

[0027] Figure 1 It is the perspective view of the utility model without console, protective cover, door plate and stainless steel plate;

[0028] Figure 2 It is the sectional view of the utility model without console, protective cover, door plate and stainless steel plate;

[0029] Figure 3 It is the perspective view of the utility model without console, protective cover, door plate and placing platform;

[0030] Figure 4 It is the perspective view of the pressure plate of the utility model.

[0031] Figure 5 is a perspective view of the utility model;

[0032] Figure 6 is a perspective view of the utility model without console.

[0033] Mark: 1, the placement platform; 2, cylinder; 3, piston; 4, press bar; 5, connecting rod; 6, water passage; 7, pressure plate; 8, horizontal mounting plate; 9, longitudinal mounting plate one; 10, longitudinal mounting plate two; 11, baffle; 12, water receiving tank; 13, water leakage hole; 14, rotary motor; 15, longitudinal connecting rod; 16, transverse connecting rod; 17, worm; 18, vertical plate; 19, door plate; 20, protective cover; 21, annular groove; 22, console; 23, guide rod; 24, transverse mounting plate; 25, guide rod mounting plate; 26, stainless steel plate. DETAILED DESCRIPTION

[0034] The utility model is further described below with specific embodiments, referring to Figure 1 -6:

[0035] A middle-open pump pressure testing machine, including lathe, be equipped with left oil cylinder, right oil cylinder on the lathe, and be placed platform 1 between left oil cylinder and right oil cylinder, the placed platform 1 is driven vertical movement by power device, the left oil cylinder and right oil cylinder all include the cylinder body 2 being set on lathe, the piston 3 is slid along transversely in the cylinder body 2, the piston 3 is equipped with press bar 4 near one side of placed platform 1, and is equipped with connecting rod 5 on the other side, the piston 3, press bar 4 and connecting rod 5 are hollow in the inside and form water passage 6, the press bar 4 outer end extends out cylinder body 2 and connects pressure plate 7, the connecting rod 5 outer end extends out cylinder body 2 and connects inlet pipe, the inlet pipe is connected water storage tank by water pump.

[0036] The working principle of the utility model: as shown in Figures 1-6 First, the middle-open pump housing is placed on the placed platform 1, then the left oil cylinder and the right oil cylinder drive the piston 3 to move, so that the pressure plate 7 is tightly attached to the end face of the corresponding opening of the middle-open pump housing, then the water pump is started, the water in the water storage tank flows into the middle-open pump housing through the inlet pipe and the water passage for water pressure test, after the test is completed, the left oil cylinder and the right oil cylinder drive the piston 3 to move, and the pressure plate 7 leaves the middle-open pump housing.

[0037] When the distance between the two openings of the middle-open pump housing and the bottom is small, the power device drives the placed platform 1 to move upward to reduce the distance between the placed platform 1 and the pressure plate 7; when the distance between the two openings of the middle-open pump housing and the bottom is large, the power device drives the placed platform 1 to move downward to expand the distance between the placed platform 1 and the pressure plate 7.

[0038] The utility model discloses a left oil cylinder and right oil cylinder are provided, and the two sides opening of the middle open pump pump shell is pressed tightly through left oil cylinder and right oil cylinder drive pressure disc 7, simple operation, save time and effort, high working efficiency, and the hollow formation of water passage 6 in piston 3, pressure rod 4 and connecting rod 5, water enters the middle open pump pump shell through water passage 6, simple structure, convenient installation and operation, and the placing platform vertical movement is driven through power device simultaneously, can be adapted to different models of middle open pump pump shell, and the adaptability is high.

[0039] The connecting mode of pressure disc 7 and pressure rod 4: as shown in Figures 1-5 Pressure disc 7 is equipped with the installation through -hole of being adapted to pressure rod 4, and pressure rod 4 is connected with installation through -hole.

[0040] The structure of machine tool: as shown in Figures 1-3 , 5, 6, the machine tool includes horizontal mounting plate 8 and the longitudinal mounting plate one 9 located respectively at the left and right sides of horizontal mounting plate 8, the placing platform 1 is installed above horizontal mounting plate 8, the longitudinal mounting plate two 10 is parallelly arranged on the side of longitudinal mounting plate one 9 away from placing platform 1, and the cylinder body 2 is installed on corresponding longitudinal mounting plate one 9 and longitudinal mounting plate two 10 respectively.

[0041] In order to guide the movement of pressure disc 7, the guide rod 23 is arranged on the pressure disc 7, the transverse mounting plate 24 is connected between the longitudinal mounting plate one 9 and the longitudinal mounting plate two 10, the guide rod mounting plate 25 is arranged on the transverse mounting plate 24, and the guide rod 23 is slidably arranged on the guide rod mounting plate 25.

[0042] In order to stabilize the movement of pressure disc 7, two guide rods 23 are arranged on each pressure disc 7, and the two guide rods 23 are located on the front and rear sides of the cylinder body 2, and correspondingly, two transverse mounting plates 24 are connected between the longitudinal mounting plate one 9 and the longitudinal mounting plate two 10.

[0043] In order to avoid water leakage and water flow in the middle open pump pump shell after the test to the ground, the baffle 11 is connected between the two longitudinal mounting plate one 9, the baffle 11 is provided with two, and is located on the front and rear sides of the horizontal mounting plate 8 respectively, the horizontal mounting plate 8, the two longitudinal mounting plate one 9 and the two baffles 11 enclose the water receiving space, the water receiving tank 12 is arranged below the horizontal mounting plate 8, and the water leakage hole 13 is arranged on the horizontal mounting plate 8 and is connected with the water receiving space and the water receiving tank 12.

[0044] In order to recycle water, the water receiving tank 12 is connected with the water storage tank through the pipeline, the height of the water receiving tank 12 is higher than that of the water storage tank, and the water in the water receiving tank 12 flows to the water storage tank due to gravity.

[0045] In order to make the water in the water receiving space flow to the water receiving tank 12 better, the water leakage hole 13 is long strip-shaped, and the length direction is arranged along the transverse direction, and two or more water leakage holes 13 are arranged along the longitudinal direction. In this embodiment, three water leakage holes 13 are arranged along the longitudinal direction.

[0046] The structure of the power device: the power device comprises a rotary motor 14 arranged at the bottom of the horizontal mounting plate 8, the rotating shaft of the rotary motor 14 is connected with a longitudinal connecting rod 15, the front and rear ends of the longitudinal connecting rod 15 are respectively connected with a transverse connecting rod 16, two or more worm gears are arranged on the transverse connecting rod 16, the worm gears are connected with a worm 17 arranged along the vertical direction, and the upper end of the worm 17 penetrates through the horizontal mounting plate 8 and is connected with the placement platform 1. In this embodiment, two worm gears are arranged on each transverse connecting rod 16.

[0047] Further, the rotary motor 14 is arranged between the two transverse connecting rods 16, and the rotating shaft of the rotary motor 14 is arranged along the transverse direction, and the rotating shaft of the rotary motor 14 and the longitudinal connecting rod 15 and the longitudinal connecting rod 15 and the transverse connecting rod 16 are connected through bevel gears.

[0048] Further, the horizontal mounting plate 8 is provided with a vertical plate 18 on the front and rear sides, respectively, and the front and rear ends of the longitudinal mounting plate one 9 and the longitudinal mounting plate two 10 are connected to the corresponding vertical plates 18, respectively, the lower surface of the horizontal mounting plate 8 is higher than the lower surface of the vertical plate 18, and a space for mounting the power device is formed, and the middle part of the vertical plate 18 is provided with a gap, and a door plate 19 moving along the transverse direction is arranged at the gap.

[0049] Preferably, the baffle plate 11 is in the same plane as the vertical plate 18, and is an integral structure.

[0050] Further, a stainless steel plate 26 is arranged on the upper side of the cylinder body 2, and the stainless steel plate 26 is connected to the upper ends of the longitudinal mounting plate one 9, the longitudinal mounting plate two 10 and the vertical plate 18.

[0051] In order to protect the left and right oil cylinders and the connecting rod 5 from moving and injuring the operator, protective covers 20 are arranged on the left and right ends of the machine tool, respectively, and the outer end of the connecting rod 5 is arranged in the protective cover 20.

[0052] In order to better seal the openings on both sides of the pump shell of the center-opening pump, annular grooves 21 are arranged on the surface of the pressure plate 7 away from the cylinder body 2, and a plurality of annular grooves 21 are arranged along the radial direction of the pressure plate 7 to ensure the flatness of the surface of the pressure plate 7, so that the pressure plate 7 can tightly adhere to the openings on both sides of the pump shell of the center-opening pump.

[0053] In order to facilitate control, a control console 22 is further arranged, and the left and right oil cylinders and the power device are electrically connected with the control console 22, respectively.

[0054] Further, the water pump is electrically connected with the control console 22.

[0055] The above embodiment is only one of the preferred embodiments of the present application, and does not limit the scope of the present application, so that: any equivalent changes made according to the shape, structure, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A center-pivot pump pressure testing machine characterized by: The machine tool comprises a left oil cylinder, a right oil cylinder and a placing platform (1) arranged between the left oil cylinder and the right oil cylinder, the placing platform (1) is driven to move vertically by a power device, the left oil cylinder and the right oil cylinder each comprise a cylinder body (2) arranged on the machine tool, a piston (3) is arranged in the cylinder body (2) to slide transversely, the piston (3) is provided with a pressing rod (4) on one side close to the placing platform (1) and a connecting rod (5) on the other side, the piston (3), the pressing rod (4) and the connecting rod (5) are hollowed to form a water passage (6) inside, the pressing rod (4) is connected with a pressing disc (7) by extending out of the cylinder body (2), and the connecting rod (5) is connected with a water inlet pipe by extending out of the cylinder body (2).

2. A pump pressure testing machine according to claim 1, wherein: The machine tool comprises a horizontal mounting plate (8) and a longitudinal mounting plate one (9) arranged on the left and right sides of the horizontal mounting plate (8) respectively, the placing platform (1) is arranged above the horizontal mounting plate (8), and the longitudinal mounting plate one (9) is provided with a longitudinal mounting plate two (10) in parallel on the side away from the placing platform (1), and the cylinder body (2) is arranged on the corresponding longitudinal mounting plate one (9) and longitudinal mounting plate two (10) at both ends respectively.

3. A pump pressure testing machine according to claim 2, wherein: Two baffle plates (11) are arranged between the two longitudinal mounting plate ones (9), and the baffle plates (11) are arranged on the front and back sides of the horizontal mounting plate (8) respectively, the horizontal mounting plate (8), the two longitudinal mounting plate ones (9) and the two baffle plates (11) form a water receiving space, a water receiving tank (12) is arranged below the horizontal mounting plate (8), and a water leakage hole (13) is arranged on the horizontal mounting plate (8) to communicate the water receiving space and the water receiving tank (12).

4. A pump pressure testing machine as claimed in claim 2, wherein: The power device comprises a rotary motor (14) arranged at the bottom of the horizontal mounting plate (8), a rotating shaft of the rotary motor (14) is connected with a longitudinal connecting rod (15), the front and back ends of the longitudinal connecting rod (15) are connected with transverse connecting rods (16) respectively, more than two worm wheels are arranged on the transverse connecting rods (16), the worm wheels are connected with a worm (17) arranged in the vertical direction, and the upper end of the worm (17) penetrates through the horizontal mounting plate (8) to be connected with the placing platform (1).

5. A pressure testing machine for mid-entry pumps as claimed in claim 2, wherein: Front and back sides of the horizontal mounting plate (8) are respectively provided with vertical plates (18), front and back ends of the longitudinal mounting plate one (9) and the longitudinal mounting plate two (10) are connected with the corresponding vertical plates (18) respectively, a lower surface of the horizontal mounting plate (8) is higher than a lower surface of the vertical plate (18), and a space for arranging the power device is formed, a notch is arranged in the middle of the vertical plate (18), and a door plate (19) moving in the transverse direction is arranged at the notch.

6. A pressure testing machine for mid-entry pumps as claimed in claim 5, wherein: Front and back ends of the machine tool are respectively covered with protective covers (20), and outer ends of the connecting rods (5) are arranged in the protective covers (20).

7. A pressure testing machine for mid-entry pumps as claimed in claim 1, wherein: A surface of the pressing disc (7) away from the cylinder body (2) is provided with an annular groove (21), and a plurality of annular grooves (21) are arranged in the radial direction of the pressing disc (7) at intervals.

8. A pressure testing machine for mid-entry pumps as claimed in claim 1, wherein: The water inlet pipe is connected with a water storage tank through a water pump.

9. A pressure testing machine for mid-entry pumps as defined in claim 1, wherein: A control console (22) is further arranged, and the left oil cylinder, the right oil cylinder and the power device are electrically connected with the control console (22) respectively.

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