Three-plunger reciprocating process pump with high pressure resistance

Abstract

The utility model relates to a three-plunger reciprocating process pump with high pressure resistance, which belongs to the technical field of process pumps and comprises a fixed bottom plate, a pressure regulating mechanism is arranged at the top of the fixed bottom plate and comprises a pump body fixedly mounted at the top of the fixed bottom plate, and a regulating valve is arranged on the front side of the pump body. According to the three-plunger reciprocating process pump with the high anti-pressure capacity, through the arranged pressure adjusting mechanism, the pump body is used for driving liquid to be conveyed through the conveying pipe, the liquid is buffered when passing through the buffering pipe through the conveying pipe, and when the pressure in the pump body is too large, a piston plate is pushed in a pressure relief cylinder to move; and the piston plate drives the sealing plate to move until the sealing plate moves until the pressure relief pipe is not closed any more, the pressure relief barrel and the pressure relief pipe are communicated with the outside, air in the pressure relief barrel is discharged outwards at the moment, air pressure in the pressure relief barrel and the pump body can be released, and the situation that the pump body is damaged due to the fact that the pressure intensity in the pump body is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of process pumps, in particular to a three-plunger reciprocating process pump with high pressure resistance. Background Art

[0002] The three-plunger reciprocating process pump is a high-pressure fluid conveying equipment that achieves the purpose of pressurization and conveying through the reciprocating motion of three plungers. This pump is mainly composed of a drive device, a piston assembly, a diaphragm assembly, a valve, etc. It has the characteristics of simple structure, reliable operation, long service life, and convenient maintenance. It is widely used in chemical, petrochemical, environmental protection, food and other industries. Its working principle is that the motor drives the reducer to rotate, and the drive shaft drives the synchronous gear to rotate, so that the three pistons reciprocate at the same time, thereby squeezing the liquid in the pump chamber and pushing it out of the pump chamber, and transporting it to where it is needed through a pipeline.

[0003] In the existing water pump casting manufacturing process, it is necessary to perform a working test on the water pump after manufacturing, and select the water pump castings after the test, so as to improve the pass rate of water pump castings leaving the factory. When the pressure of the water flow inside the water pump increases sharply, the pump body casing is suddenly subjected to a large pressure, which causes the casing to deform, resulting in the deformation of the pump body casting, affecting the working efficiency of other components in the pump body and causing the performance of the water pump to decline. Therefore, this application proposes another technical solution to solve the above problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a three-plunger reciprocating process pump with high pressure resistance, which has the advantages of convenient pressure relief on the pump body, pressure adjustment, and avoidance of damage to the device. It solves the problem that when the pressure of the water flow inside the water pump increases sharply, the pump body casing is suddenly subjected to a large pressure, causing the casing to deform, resulting in deformity of the pump body casting, affecting the working efficiency of other components in the pump body and causing the performance of the water pump to decline.

[0005] To achieve the above object, the utility model provides the following technical solution: a three-plunger reciprocating process pump with high pressure resistance, comprising a fixed bottom plate, a pressure regulating mechanism is arranged on the top of the fixed bottom plate;

[0006] The pressure regulating mechanism comprises a pump body fixedly mounted on the top of a fixed bottom plate, a regulating valve is arranged on the front of the pump body, a control panel is arranged on the front of the pump body, a delivery pipe is fixedly mounted on both the left and right sides of the pump body, and a buffer pipe fixedly mounted on the outer side of the delivery pipe and connected to the fixed bottom plate;

[0007] A pressure relief cylinder is fixedly installed at the top of the pump body. A telescopic spring is fixedly installed inside the pressure relief cylinder. A piston plate is fixedly installed at the bottom of the telescopic spring. A limiting rod is fixedly installed on the inner top wall of the pressure relief cylinder. An activity cylinder fixedly connected to the piston plate is movably connected to the outside of the limiting rod.

[0008] Furthermore, the pressure regulating mechanism further includes sealing plates fixedly installed on the left and right sides of the piston plate. Pressure relief pipes are fixedly installed on the left and right sides of the pressure relief cylinder. An active air outlet pipe is fixedly installed on the right side of the pressure relief cylinder.

[0009] Furthermore, pipe grooves are formed on both the left and right sides of the pressure relief cylinder. The pressure relief pipes are fixedly connected to the pressure relief cylinder through the pipe grooves.

[0010] Furthermore, a limiting groove is formed inside the activity cylinder. The limiting rod is slidably connected to the activity cylinder through the limiting groove.

[0011] Furthermore, the sealing plates are attached to the inner walls on the left and right sides of the pressure relief pipes, and the sealing plates are adapted to the pressure relief pipes.

[0012] Furthermore, a fixing groove is formed on the right side of the pressure relief cylinder. The active air outlet pipe is fixedly connected to the pressure relief cylinder through the fixing groove.

[0013] Furthermore, a through groove is formed inside the buffer pipe. The delivery pipe is fixedly connected to the buffer pipe through the through groove.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] For the triple plunger reciprocating flow pump with high compressive capacity, through the provided pressure regulating mechanism, the pump body drives the liquid to be transported through the delivery pipe. When the liquid passes through the buffer pipe through the delivery pipe, it is buffered. When the pressure inside the pump body is too high, the piston plate inside the pressure relief cylinder is pushed to move, so that the piston plate drives the sealing plate to move until the sealing plate moves to no longer close the pressure relief pipe, making the pressure relief cylinder and the pressure relief pipe communicate with the outside. At this time, the air inside the pressure relief cylinder is discharged outward, and the air pressure inside the pressure relief cylinder and the pump body can be released, which helps to avoid damage to the pump body caused by excessive pressure inside the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional view of the structure of the present utility model;

[0017] Figure 2 is the present utility model Figure 1 is an enlarged schematic view of structure A in the present utility model;

[0018] Figure 3 is a schematic three-dimensional view of the structure of the present utility model.

[0019] In the figure: 1. Fixed bottom plate; 2. Pump body; 3. Adjusting valve; 4. Control panel; 5. Delivery pipe; 6. Buffer pipe; 7. Pressure relief cylinder; 8. Telescopic spring; 9. Piston plate; 10. Limit rod; 11. Movable cylinder; 12. Sealing plate; 13. Pressure relief pipe; 14. Active air outlet pipe. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 3 , a three-plunger reciprocating flow pump with high compressive capacity in this embodiment includes a fixed bottom plate 1, and a pressure regulating mechanism is arranged on the top of the fixed bottom plate 1.

[0022] In this embodiment, the pressure regulating mechanism includes a pump body 2 fixedly installed on the top of the fixed bottom plate 1, an adjusting valve 3 is arranged on the front surface of the pump body 2, a control panel 4 is arranged on the front surface of the pump body 2, delivery pipes 5 are fixedly installed on both the left and right sides of the pump body 2, a buffer pipe 6 fixedly connected to the fixed bottom plate 1 is fixedly installed on the outer side of the delivery pipe 5, a through groove is formed inside the buffer pipe 6, and the delivery pipe 5 is fixedly connected to the buffer pipe 6 through the through groove, which helps to convey liquid.

[0023] Among them, a pressure relief cylinder 7 is fixedly installed on the top of the pump body 2, a telescopic spring 8 is fixedly installed inside the pressure relief cylinder 7, a piston plate 9 is fixedly installed at the bottom of the telescopic spring 8, a limit rod 10 is fixedly installed on the inner top wall of the pressure relief cylinder 7, and a movable cylinder 11 fixedly connected to the piston plate 9 is movably connected to the outer side of the limit rod 10. A limit groove is formed inside the movable cylinder 11, and the limit rod 10 is slidably connected to the movable cylinder 11 through the limit groove, which helps the limit rod 10 to limit the movable cylinder 11.

[0024] In this embodiment, the pressure regulating mechanism further includes sealing plates 12 fixedly installed on both the left and right sides of the piston plate 9, pressure relief pipes 13 are fixedly installed on both the left and right sides of the pressure relief cylinder 7, the sealing plates 12 are attached to the inner walls of the left and right sides of the pressure relief pipes 13, and the sealing plates 12 are adapted to the pressure relief pipes 13, which helps the sealing plates 12 to seal the pressure relief pipes 13.

[0025] Among them, pipe grooves are provided on both the left and right sides of the pressure relief cylinder 7. The pressure relief pipe 13 is fixedly connected to the pressure relief cylinder 7 through the pipe grooves, which helps to install and fix the pressure relief pipe 13. The right side of the pressure relief cylinder 7 is fixedly installed with an active air outlet pipe 14. A fixing groove is provided on the right side of the pressure relief cylinder 7. The active air outlet pipe 14 is fixedly connected to the pressure relief pipe 13 through the fixing groove, which helps to carry out active air outlet.

[0026] It should be noted that for this three-plunger reciprocating process pump with high compressive capacity, through the provided pressure regulating mechanism, the pump body 2 is used to drive the liquid to be transported through the delivery pipe 5. When the liquid passes through the buffer pipe 6 via the delivery pipe 5, it is buffered. When the pressure inside the pump body 2 is too high, the push piston plate 9 inside the pressure relief cylinder 7 moves, causing the piston plate 9 to drive the sealing plate 12 to move until the sealing plate 12 moves to no longer block the pressure relief pipe 13, so that the pressure relief cylinder 7 and the pressure relief pipe 13 are connected to the outside. At this time, the air inside the pressure relief cylinder 7 is discharged outward, and the air pressure inside the pressure relief cylinder 7 and the pump body 2 can be released, which helps to avoid damage to the pump body 2 caused by excessive pressure inside the pump body 2.

[0027] The working principle of the above embodiment is as follows:

[0028] When this three-plunger reciprocating process pump with high compressive capacity is in use, the pump body 2 is started for driving, so that the liquid is transmitted through the delivery pipe 5, and the control panel 4 can be used to control the driving transmission rate of the pump body 2. When the liquid passes through the buffer pipe 6 via the delivery pipe 5, it is buffered. When the pressure inside the pump body 2 is too high, the liquid presses the air to compress the air. The compressed air increases the pressure on one side of the bottom of the piston plate 9 inside the pressure relief cylinder 7, causing the air to push the piston plate 9 to move. The piston plate 9 drives the movable cylinder 11 to slide outside the limit rod 10, so that the piston plate 9 moves smoothly up and down. In this way, the piston plate 9 drives the sealing plate 12 to move until the sealing plate 12 moves to no longer block the pressure relief pipe 13, so that the pressure relief cylinder 7 and the pressure relief pipe 13 are connected to the outside. At this time, the air inside the pressure relief cylinder 7 is discharged outward, and the air pressure inside the pressure relief cylinder 7 and the pump body 2 can be released, which helps to avoid damage to the pump body 2 caused by excessive pressure inside the pump body 2. The air pressure can also be actively released by directly opening the active air outlet pipe 14, greatly improving the safety and practicality of the device.

[0029] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A three-plunger reciprocating process pump with high compressive resistance, including a fixed bottom plate (1), characterized in that: A pressure regulating mechanism is provided at the top of the fixed base plate (1); The pressure regulating mechanism includes a pump body (2) fixedly installed on the top of the fixed base plate (1). A regulating valve (3) is provided on the front of the pump body (2). A control panel (4) is provided on the front of the pump body (2). Delivery pipes (5) are fixedly installed on both the left and right sides of the pump body (2). A buffer pipe (6) fixedly connected to the fixed base plate (1) is fixedly installed on the outer side of the delivery pipe (5); A pressure relief cylinder (7) is fixedly installed on the top of the pump body (2). A telescopic spring (8) is fixedly installed inside the pressure relief cylinder (7). A piston plate (9) is fixedly installed at the bottom of the telescopic spring (8). A limiting rod (10) is fixedly installed on the inner top wall of the pressure relief cylinder (7). A movable cylinder (11) fixedly connected to the piston plate (9) is movably connected to the outer side of the limiting rod (10).

2. The high-pressure-resistant three-plunger reciprocating process pump according to claim 1, characterized in that: The pressure regulating mechanism further includes sealing plates (12) fixedly installed on both the left and right sides of the piston plate (9). Pressure relief pipes (13) are fixedly installed on both the left and right sides of the pressure relief cylinder (7). A main outlet pipe (14) is fixedly installed on the right side of the pressure relief cylinder (7).

3. The triplex reciprocating process pump with high compressive capacity according to claim 2, characterized in that: Tube grooves are formed on both the left and right sides of the pressure relief cylinder (7). The pressure relief pipes (13) are fixedly connected to the pressure relief cylinder (7) through the tube grooves.

4. A three-plunger reciprocating flow pump with high compressive capacity according to claim 1, characterized in that: A limiting groove is formed inside the movable cylinder (11). The limiting rod (10) is slidably connected to the movable cylinder (11) through the limiting groove.

5. The high-pressure-resistant three-plunger reciprocating process pump according to claim 2, characterized in that: The sealing plates (12) are in fit with the inner walls on both the left and right sides of the pressure relief cylinder (7). The sealing plates (12) are adapted to the pressure relief pipes (13).

6. The high-pressure-resistant three-plunger reciprocating flow pump according to claim 2, characterized in that: A fixing groove is formed on the right side of the pressure relief cylinder (7). The main outlet pipe (14) is fixedly connected to the pressure relief cylinder (7) through the fixing groove.

7. The high-pressure-resistant three-plunger reciprocating process pump according to claim 1, characterized in that: A through groove is formed inside the buffer pipe (6). The delivery pipe (5) is fixedly connected to the buffer pipe (6) through the through groove.

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