High-pressure pump protection regulating valve

Abstract

The utility model discloses a high-pressure pump protection regulating valve which comprises a pump body, a water inlet pipe and a water outlet pipe are installed at the two ends of the pump body respectively, a piston column is connected into a device cylinder in a sliding mode, the outer diameter of the piston column is consistent with the inner diameter of a backflow pipe, the piston column slides on the central axis of the backflow pipe, and a reciprocating lead screw is rotationally connected to the top in the device cylinder. A screw sleeve is in threaded connection with the threaded section of the reciprocating screw, the piston column is installed outside the screw sleeve, and a flow slowing mechanism is installed in the flow slowing cylinder. The reciprocating lead screw is driven to rotate through rotation of the flow slowing blades, sliding of the piston column is further controlled, dynamic adjustment of water flow pressure and flow speed is achieved, under the high-pressure working condition, the flow slowing blades and the piston column are accelerated in operation, the flow dividing and slowing effects are remarkably enhanced, impact force of water flow on the pump body is effectively reduced, and the service life of the pump body is prolonged. And meanwhile, the whole device can quickly adapt to the change of water flow pressure, and the operation stability and reliability of the high-pressure pump are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure pump technical field especially relates to high pressure pump protection regulating valve. BACKGROUND

[0002] High pressure pump protection regulating valve is a kind of key equipment for protecting high pressure pump and pipeline system, ensure that high pressure pump runs in safety range.

[0003] The utility model discloses a kind of high pressure pump protection valves, the device when using, water is extracted from outlet pipe to reflux pipe by the operation of piston mechanism, cooperate with the slow flow plate in reflux pipe to realize the slow flow of water flow, and then reduce the influence of water flow impact force on high pressure pump, but actual use, the device has certain drawbacks, for example, when water flow pressure is larger, in view of the inertia and delay of the mechanical movement of piston mechanism, cannot adjust instantaneously, the mode of piston water extraction can not keep up with the speed of water flow change, thereby affect reflux effect, thus need to propose high pressure pump protection regulating valve for the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in prior art, and proposes high pressure pump protection regulating valve.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] High pressure pump protection regulating valve, including pump body, the pump body two ends are installed with inlet pipe and outlet pipe, the inlet pipe outer wall is installed with reflux pipe, and reflux pipe other end is connected with the inside of outlet pipe, device cylinder and slow flow cylinder are installed on the inlet pipe pipeline, and all are connected with the inside of inlet pipe, slidingly connected with piston column in the device cylinder, and the outer diameter of piston column is consistent with the inner diameter of reflux pipe, the piston column slides on the axis of reflux pipe, reciprocating screw rod is rotatably connected with the top in the device cylinder, the screw rod sleeve is threadedly connected on the screw thread section of reciprocating screw rod, the piston column is installed outside the screw rod sleeve, slow flow mechanism is installed in the slow flow cylinder.

[0007] Preferably, the slow flow mechanism includes slow flow blade rotatably connected in the slow flow cylinder, a plurality of connecting rods are fixedly connected to the lower end surface of the screw rod sleeve, and the end portions of the plurality of connecting rods are fixedly connected with the piston column.

[0008] Preferably, two groups of limit rods are fixedly connected to the top in the device cylinder, and the positions are mutually symmetrical, and the screw rod sleeve is slidingly connected to the outer wall of the two groups of limit rods.

[0009] Preferably, the end of reciprocating screw rod is fixedly connected with a limit block, and the radius size of the limit block is greater than the radius size of reciprocating screw rod.

[0010] Preferably, the device cylinder and the slow flow cylinder end face are rotationally connected with transmission wheels, and the radii of the two are inconsistent, and the two groups of transmission wheels are coaxially fixedly connected with the slow flow blades and the reciprocating lead screw respectively.

[0011] Preferably, the two groups of transmission wheels are connected with each other through a transmission belt, and the device cylinder is installed between the pump body and the slow flow cylinder

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model discloses a slow flow blade drives the reciprocating lead screw to rotate, and then controls the sliding of the piston column, realizes the dynamic regulation of water flow pressure and flow rate, under high pressure working condition, the slow flow blade and the piston column run fast, and the shunt and slow flow effect are enhanced obviously, effectively reduce the impact force of water flow to the pump body, and the whole device can quickly adapt to the change of water flow pressure, and the operation stability and reliability of the high pressure pump are improved obviously.

[0014] 2. The utility model discloses a slow flow blade directly drives the reciprocating lead screw through the transmission wheel and the transmission belt, avoids the inertia delay problem of complex mechanical structure, can accurately adjust water flow pressure simultaneously, avoids the damage of the pump body due to high pressure impact, and provides efficient protection for the high pressure pump. DRAWINGS

[0015] Figure 1 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model.

[0016] Figure 2 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model. Figure 1 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model.

[0017] Figure 3 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model. Figure 1 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model.

[0018] Figure 4 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model. Figure 2 It is the structure diagram of the high pressure pump protection regulating valve provided by the utility model.

[0019] In the drawing: 1, pump body;2, inlet pipe;3, return pipe;4, device cylinder;5, slow flow cylinder;6, limit rod;7, lead screw sleeve;8, piston column;9, limit block;10, connecting rod;11, transmission wheel;12, transmission belt;13, slow flow blade;14, reciprocating lead screw;15, outlet pipe. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] Reference Figures 1-4 , the high-pressure pump protection regulating valve, including pump body 1, pump body 1 both ends are respectively installed with water inlet pipe 2 and water outlet pipe 15, water inlet pipe 2 outer wall is installed with backflow pipe 3, and backflow pipe 3 other end is communicated with water outlet pipe 15 inside, water inlet pipe 2 pipeline is installed with device cylinder 4 and slow flow cylinder 5, and both are communicated with water inlet pipe 2 inside, piston rod 8 is slidably connected in device cylinder 4, and the outer diameter of piston rod 8 is consistent with the inner diameter of backflow pipe 3, piston rod 8 slides on the axis of backflow pipe 3, reciprocating screw rod 14 is rotatably connected with the top of device cylinder 4, screw sleeve 7 is threadedly connected on the threaded section of reciprocating screw rod 14, piston rod 8 is installed outside screw sleeve 7, slow flow mechanism is installed in slow flow cylinder 5;

[0022] Specifically, by the movement of piston rod 8, the space inside water inlet pipe 2 can be compressed, and then part of the water flow is forced to flow into backflow pipe 3, and by the design of flow splitting and slow flow, the flow fluctuation and pressure impact of the inlet of pump body 1 are effectively reduced, and the service life of pump body 1 is prolonged.

[0023] The slow flow mechanism comprises slow flow blades 13 rotatably connected in the slow flow cylinder 5, a plurality of connecting rods 10 are fixedly connected to the lower end surface of screw sleeve 7, and the end portions of the plurality of connecting rods 10 are fixedly connected with piston rod 8.

[0024] Specifically, the slow flow blades 13 can effectively slow down the water flow speed and reduce the impact force of the water flow on the high-pressure pump. The connecting rods 10 connect the screw sleeve 7 with the piston rod 8, realizing the synchronous movement of the piston rod 8.

[0025] Two sets of limiting rods 6 are fixedly connected to the top of the device cylinder 4, and the positions are symmetrical to each other, the screw sleeve 7 is slidably connected to the outer wall of the two sets of limiting rods 6, and the end portion of the reciprocating screw rod 14 is fixedly connected with a limiting block 9, and the radius size of the limiting block 9 is greater than the radius size of the reciprocating screw rod 14.

[0026] Specifically, the limiting block 9 and the design of the limiting block 9 prevent the screw sleeve 7 from being separated from the reciprocating screw rod 14 during movement.

[0027] The end surfaces of the device cylinder 4 and the slow flow cylinder 5 are rotatably connected with transmission wheels 11, and the radii of the two are inconsistent, the two sets of transmission wheels 11 are coaxially fixedly connected with the slow flow blades 13 and the reciprocating screw rod 14 respectively, the two sets of transmission wheels 11 are connected with each other through a transmission belt 12, and the device cylinder 4 is installed between the pump body 1 and the slow flow cylinder 5.

[0028] Specifically, the design of the transmission wheels 11 and the transmission belt 12 realizes the linkage of the slow flow blades 13 and the reciprocating screw rod 14, so that the adjustment of the slow flow mechanism is more efficient and synchronous.

[0029] The utility model discloses a device, when using, water flows into the pump body 1 from the water inlet pipe 2 and is discharged through the water outlet pipe 15, and under normal conditions, the water flow pressure is relatively stable, and when the water flow passes through the slow flow cylinder 5, the slow flow vane 13 is driven to rotate slowly. The transmission wheel 11 and the transmission belt 12 are arranged, power is transmitted to the reciprocating lead screw 14, the reciprocating lead screw 14 is driven to rotate slowly, the lead screw sleeve 7 is driven to move slowly along the limiting rod 6, and the piston column 8 is driven to slide slowly in the backflow pipe 3. At this time, the piston column 8 moves slowly, only slightly shunts the water flow in the water inlet pipe 2, part of the water flow slowly flows into the water outlet pipe 15 through the backflow pipe 3, and the shunting effect is weak.

[0030] When the water flow pressure suddenly increases, the high-pressure water flow generates a greater impact force on the pump body 1. At this time, the flow rate of the water flow passing through the slow flow cylinder 5 is accelerated, and the slow flow vane 13 is driven to rotate rapidly. The rapid rotation of the slow flow vane 13 transmits power to the reciprocating lead screw 14 through the transmission wheel 11 and the transmission belt 12, so that the rotation speed of the reciprocating lead screw 14 is accelerated. The sliding speed of the piston column 8 in the backflow pipe 3 is also accelerated, and the rapid rotation of the slow flow vane 13 further enhances the slow flow effect.

[0031] The rapid movement of the piston column 8 significantly compresses the space inside the water inlet pipe 2, forcing more high-pressure water flow to be rapidly shunted to the water outlet pipe 15 through the backflow pipe 3, thereby reducing the water flow pressure and flow fluctuation entering the pump body 1, effectively relieving the impact force of the high-pressure water flow on the pump body 1. Through the rotation speed of the slow flow vane 13, dynamic adjustment of the high-pressure water flow is realized, ensuring the safe operation of the pump body 1 under high-pressure conditions.

[0032] In summary, the device rotates the reciprocating lead screw 14 by rotating the slow flow vane 13, and then controls the sliding of the piston column 8, realizing dynamic adjustment of the water flow pressure and flow rate. Under normal conditions, the slow flow vane 13 and the piston column 8 operate slowly, and the shunting and slow flow effects are weak; under high-pressure conditions, the slow flow vane 13 and the piston column 8 operate faster, and the shunting and slow flow effects are significantly enhanced, effectively reducing the impact force of the water flow on the pump body 1, prolonging the service life of the high-pressure pump.

[0033] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A high pressure pump protection regulating valve comprising a pump body (1), characterized in that, The pump body (1) is respectively provided with an inlet pipe (2) and an outlet pipe (15) at both ends, the outer wall of the inlet pipe (2) is provided with a return pipe (3), the other end of the return pipe (3) is communicated with the inside of the outlet pipe (15), the device cylinder (4) and the slow flow cylinder (5) are installed on the pipeline of the inlet pipe (2) and are communicated with the inside of the inlet pipe (2), the piston column (8) is slidably connected in the device cylinder (4), the outer diameter of the piston column (8) is consistent with the inner diameter of the return pipe (3), the piston column (8) slides on the axis of the return pipe (3), the reciprocating screw rod (14) is rotatably connected to the top of the device cylinder (4), the screw rod sleeve (7) is threadedly connected on the threaded section of the reciprocating screw rod (14), the piston column (8) is installed outside the screw rod sleeve (7), and the slow flow mechanism is installed in the slow flow cylinder (5).

2. The high pressure pump protection regulator valve according to claim 1, characterized in that The slow flow mechanism comprises slow flow blades (13) rotatably connected in the slow flow cylinder (5), a plurality of groups of connecting rods (10) are fixedly connected to the lower end surface of the screw rod sleeve (7), and the end portions of the plurality of groups of connecting rods (10) are fixedly connected with the piston column (8).

3. The high pressure pump protection regulator valve according to claim 2, characterized in that Two groups of limiting rods (6) are fixedly connected to the top of the device cylinder (4) and are symmetrically arranged, and the screw rod sleeve (7) is slidably connected to the outer wall of the two groups of limiting rods (6).

4. The high pressure pump protection regulator valve according to claim 3, characterized in that The end portion of the reciprocating screw rod (14) is fixedly connected with a limiting block (9), and the radius size of the limiting block (9) is greater than the radius size of the reciprocating screw rod (14).

5. The high pressure pump protection regulator valve according to claim 4, characterized in that The end surfaces of the device cylinder (4) and the slow flow cylinder (5) are rotatably connected with transmission wheels (11), and the radii of the two are inconsistent, and the two groups of transmission wheels (11) are coaxially fixedly connected with the slow flow blades (13) and the reciprocating screw rod (14) respectively.

6. The high pressure pump protection regulator valve according to claim 5, characterized in that The two groups of transmission wheels (11) are connected with each other through a transmission belt (12), and the device cylinder (4) is installed between the pump body (1) and the slow flow cylinder (5).

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