Vertical piston pump

Abstract

The utility model discloses a vertical piston pump which comprises a base frame, a hydraulic station, an upper pump body, a lower pump body, a cylinder barrel, an oil cylinder, a feeding pipeline, a discharging pipeline, a feeding one-way valve and a discharging one-way valve, the hydraulic station and two combined pump bodies are installed on the base, each combined pump body is composed of an upper pump body, a cylinder barrel and a lower pump body which are sequentially connected from top to bottom, the cylinder barrel is vertically arranged, and the oil cylinder is arranged in the cylinder barrel. The cylinder barrel is communicated with the upper pump body and the lower pump body, the lower pump body is mounted on the underframe, an oil cylinder which is vertically and downwards arranged is fixed at the upper end of the upper pump body and is driven by a hydraulic station, and a piston rod of the oil cylinder extends into the combined pump body; the cylinder barrel matched with the piston block is connected between the upper pump body and the lower pump body, and the feeding one-way valve and the discharging one-way valve are arranged on the upper pump body and the lower pump body in a matched mode, so that a medium is pumped out all the time in the operation process of the device, stability and continuity of medium output are guaranteed, and meanwhile efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pump, particularly the technical field of piston pump. BACKGROUND

[0002] The piston pump is a commonly used reciprocating pump, which is divided into single cylinder and multi-cylinder in structure, and has the characteristics of high lift; it is suitable for conveying oil emulsion liquid without solid particles at normal temperature; it is used for water injection, oil injection, oil extraction in oil fields and coal seams; it is used as a power pump of a chamber press and a water pressure machine, hydraulic sand cleaning, and ammonia liquid conveying in a fertilizer factory.

[0003] The existing patent CN216812041U discloses a vertical piston pump device, which can effectively transport medium, but the reciprocating sequence can only transport medium once, which leads to discontinuous medium output and slow medium pumping speed. SUMMARY

[0004] The utility model discloses a vertical piston pump, which can ensure the stability and continuity of medium output and improve the medium pumping speed.

[0005] To achieve the above-mentioned purpose, the utility model provides a vertical piston pump, which comprises a chassis, a hydraulic station, an upper pump body, a lower pump body, a cylinder barrel, an oil cylinder, a feeding pipeline, a discharging pipeline, a feeding check valve and a discharging check valve, the base is provided with the hydraulic station and two combined pump bodies, the combined pump body is composed of the upper pump body, the cylinder barrel and the lower pump body connected in sequence from top to bottom, the cylinder barrel is vertically arranged, the cylinder barrel is connected with the upper pump body and the lower pump body, the lower pump body is installed on the chassis, the upper end of the upper pump body is fixed with an oil cylinder arranged vertically downward, the oil cylinder is driven by the hydraulic station, the piston rod of the oil cylinder extends into the combined pump body, the end of the piston rod of the oil cylinder is fixed with a piston block matched with the cylinder barrel, the upper pump body and the lower pump body are each provided with two connecting ports, the two connecting ports on the upper pump body are respectively connected with the feeding check valve and the discharging check valve, the two connecting ports on the lower pump body are respectively connected with the feeding check valve and the discharging check valve, all the feeding check valves are connected with the feeding pipeline, and all the discharging check valves are connected with the discharging pipeline.

[0006] Preferably, the feeding check valve only allows the medium to flow from the feeding pipeline to the combined pump body, and the discharging check valve only allows the medium to flow from the combined pump body to the discharging pipeline.

[0007] Preferably, the two upper pump bodies on the two combined pump bodies are fixed together.

[0008] Preferably, the feeding check valves are located on the same side of the combined pump body, the discharging check valves are located on the same side of the combined pump body, and the feeding check valves and the discharging check valves are distributed on opposite sides of the combined pump body.

[0009] Preferably, a wear-resistant ceramic layer is arranged on the inner wall of the cylinder, and a sealing ring is arranged on the outer wall of the piston block.

[0010] Preferably, a gas storage tank is arranged at the highest position of the discharge pipeline, the lower end of the gas storage tank is communicated with the discharge pipeline, a safety valve is arranged at the top end of the gas storage tank, the lower end of the gas storage tank is higher than the uppermost discharge check valve, and the gas storage tank is close to the uppermost discharge check valve.

[0011] Preferably, the two piston blocks always move in opposite directions.

[0012] The utility model discloses a beneficial effect: the utility model discloses a cylinder that is connected between the upper pump body and the lower pump body and is matched with the piston block, and the feeding check valve and the discharge check valve are arranged on the upper pump body and the lower pump body, so that the device always pumps medium in the running process, guarantees the stability and continuity of medium output, and improves the efficiency.

[0013] The features and advantages of the utility model will be described in detail in combination with the drawings through embodiments. DRAWINGS

[0014] Figure 1 It is the front view of the utility model vertical piston pump;

[0015] Figure 2 It is the section view of the utility model vertical piston pump.

[0016] In the drawing: 1 - base frame, 2 - combined pump body, 3 - feeding pipeline, 4 - discharge pipeline, 10 - hydraulic station, 11 - oil cylinder, 12 - piston block, 20 - wear-resistant ceramic layer, 21 - cylinder, 22 - upper pump body, 23 - lower pump body, 30 - feeding check valve, 40 - discharge check valve, 45 - gas storage tank. DETAILED DESCRIPTION

[0017] Embodiment one:

[0018] Referring to Figure 1 , Figure 2 The utility model vertical piston pump, including base frame 1, hydraulic station 10, upper pump body 22, lower pump body 23, cylinder 21, oil cylinder 11, feeding pipeline 3, discharge pipeline 4, feeding check valve 30, discharge check valve 40.

[0019] The base is installed with hydraulic station 10 and two combined pump bodies 2, the combined pump body 2 is composed of upper pump body 22, cylinder 21 and lower pump body 23 sequentially connected from top to bottom, the cylinder 21 is vertically arranged, the cylinder 21 is communicated with upper pump body 22 and lower pump body 23, and the lower pump body 23 is installed on the base frame 1.

[0020] The upper pump body 22 is fixed with an oil cylinder 11 arranged vertically downward, the oil cylinder 11 is driven by the hydraulic station 10, the piston rod of the oil cylinder 11 extends into the inside of the combined pump body 2, and the piston rod of the oil cylinder 11 is fixed with a piston block 12 matched with the cylinder barrel 21, the piston block 12 reciprocates vertically upward and downward in the inside of the cylinder barrel 21.

[0021] The upper pump body 22 and the lower pump body 23 are each provided with two connecting ports, the two connecting ports on the upper pump body 22 are connected with a feeding one-way valve 30 and a discharging one-way valve 40 respectively, the two connecting ports on the lower pump body 23 are connected with a feeding one-way valve 30 and a discharging one-way valve 40 respectively, all the feeding one-way valves 30 are connected with the feeding pipeline 3, and all the discharging one-way valves 40 are connected with the discharging pipeline 4.

[0022] The feeding one-way valve 30 only allows the medium to flow from the feeding pipeline 3 to the combined pump body 2, and the discharging one-way valve 40 only allows the medium to flow from the combined pump body 2 to the discharging pipeline 4.

[0023] The inside wall of the cylinder barrel 21 is provided with a wear-resistant ceramic layer 20, and the outer wall of the piston block 12 is provided with a sealing ring.

[0024] Example two:

[0025] In order to ensure the stability of the device during operation and reduce the generation of vibration, the two upper pump bodies 22 on the two combined pump bodies 2 are fixed together, the feeding one-way valves 30 are located on the same side of the combined pump body 2, the discharging one-way valves 40 are located on the same side of the combined pump body 2, the feeding one-way valves 30 and the discharging one-way valves 40 are distributed on the opposite sides of the combined pump body 2, and the movement directions of the two piston blocks 12 are always opposite.

[0026] Example three:

[0027] In order to improve the wear resistance of the cylinder barrel and improve the durability of the cylinder barrel, the inside wall of the cylinder barrel 21 is provided with a wear-resistant ceramic layer 20, and the outer wall of the piston block 12 is provided with a sealing ring.

[0028] Example four:

[0029] In order to avoid the influence of air mixed in the medium on the flow of the medium and improve the use safety of the device, a gas storage tank 45 is installed at the highest position of the discharging pipeline 4, the lower end of the gas storage tank 45 is communicated with the discharging pipeline 4, a safety valve is installed at the top end of the gas storage tank 45, the lower end of the gas storage tank 45 is higher than the uppermost discharging one-way valve 40, and the gas storage tank 45 is close to the uppermost discharging one-way valve 40.

[0030] The working process of the utility model:

[0031] The utility model discloses a vertical piston pump, when the piston block 12 moves upward, the lower pump body 23 inhales medium from the feed pipeline 3 through the connected feed one-way valve 30, and the upper pump body 22 pumps medium into the discharge pipeline 4 through the connected discharge one-way valve 40, when the piston block 12 moves downward, the upper pump body 22 inhales medium from the feed pipeline 3 through the connected feed one-way valve 30, and the lower pump body 23 pumps medium into the discharge pipeline 4 through the connected discharge one-way valve 40.

[0032] The device always pumps medium during operation, ensuring stability and continuity of medium output and improving the speed of medium pumping.

[0033] The above examples are illustrative of the utility model and are not limiting of the utility model, and any simple transformation of the utility model falls within the protection scope of the utility model.

Claims

1. A vertical piston pump, characterized in that: The system includes a base frame (1), a hydraulic station (10), an upper pump body (22), a lower pump body (23), a cylinder (21), an oil cylinder (11), a feed pipe (3), a discharge pipe (4), a feed check valve (30), and a discharge check valve (40). The base is equipped with a hydraulic station (10) and two combined pump bodies (2). The combined pump body (2) consists of an upper pump body (22), a cylinder (21), and a lower pump body (23) connected from top to bottom. The cylinder (21) is vertically arranged and connects the upper pump body (22) and the lower pump body (23). The lower pump body (23) is mounted on the base frame (1). The upper pump body (22) has a vertically downward-arranged oil cylinder (11) fixed at its upper end. 1) The cylinder (11) is driven by the hydraulic station (10). The piston rod of the cylinder (11) extends into the combined pump body (2). The piston rod of the cylinder (11) is fixed with a piston block (12) that cooperates with the cylinder (21). The upper pump body (22) and the lower pump body (23) are each provided with two connection ports. The two connection ports on the upper pump body (22) are respectively connected to the feed check valve (30) and the discharge check valve (40). The two connection ports on the lower pump body (23) are respectively connected to the feed check valve (30) and the discharge check valve (40). All feed check valves (30) are connected to the feed pipeline (3), and all discharge check valves (40) are connected to the discharge pipeline (4).

2. The vertical piston pump as described in claim 1, characterized in that: The feed check valve (30) only allows the medium to flow from the feed pipeline (3) to the combined pump body (2), and the discharge check valve (40) only allows the medium to flow from the combined pump body (2) to the discharge pipeline (4).

3. The vertical piston pump as described in claim 1, characterized in that: The two upper pump bodies (22) on the two combined pump bodies (2) are fixed together.

4. The vertical piston pump as described in claim 1, characterized in that: The feed check valve (30) is located on the same side of the combined pump body (2), and the discharge check valve (40) is located on the same side of the combined pump body (2). The feed check valve (30) and the discharge check valve (40) are distributed on opposite sides of the combined pump body (2).

5. The vertical piston pump as described in claim 1, characterized in that: The cylinder (21) has a wear-resistant ceramic layer (20) on its inner wall and a sealing ring on its outer wall.

6. The vertical piston pump as described in claim 1, characterized in that: A gas storage tank (45) is installed at the highest point of the discharge pipeline (4). The lower end of the gas storage tank (45) is connected to the discharge pipeline (4). A safety valve is installed at the top of the gas storage tank (45). The lower end of the gas storage tank (45) is higher than the uppermost discharge check valve (40). The gas storage tank (45) is close to the uppermost discharge check valve (40).

7. The vertical piston pump as described in any one of claims 1-6, characterized in that: The two piston blocks (12) always move in opposite directions.

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