Throttle valve pressure adjusting mechanism

Abstract

A throttle valve pressure regulating mechanism belongs to the technical field of mechanical function conversion equipment and comprises a cylinder body, a piston mechanism, a backflow mechanism and a flow guide mechanism, the piston mechanism is arranged in the cylinder body, a sealing ring is arranged on the outer circumference of a piston, and the flow guide mechanism is arranged on the left side of the cylinder body. The flow guide mechanism adjusts the pressure intensity in the cylinder by controlling the size of a flow guide hole, a reset spring is arranged between the right cylinder cover and the piston, the flow guide flow is adjusted by adjusting the size of the flow guide hole, hedging with liquid in the cylinder is increased or decreased, and therefore the pressure in the cylinder is affected, and the situation that the stroke of the piston in the oil cylinder exceeds the high-pressure limit end and is not known is eradicated. And the serious problems caused by rapid abrasion of the rubber ring, pressure reduction and resistance generation are reduced, and the service life of the product is prolonged.

Description

Technical Field

[0001] The embodiment of the utility model provides a throttle valve pressure regulating mechanism, belonging to the field of fluid pressure actuators. Background Art

[0002] The press uses pressurized oil to push the piston to move in a closed cylinder, and provides pressure to the outside through the piston rod. In the past, the piston traveled beyond the high-pressure limit in the cylinder without knowing it, causing the cylinder to burst. Therefore, an unloading link is set in the entire rigid force transmission chain to protect the machine when there is an overload. The existing unloading method is usually to set a high-pressure safety channel on the inside of the cylinder. When the piston travels to the safety channel, the cylinder is depressurized, but each time the pressure is released, it is done suddenly. The high-pressure oil and normal-pressure oil are converted in an instant, rubbing the rubber ring on the piston, causing the rubber ring to wear quickly, thereby reducing the pressure and generating resistance, leading to serious problems and seriously affecting the service life of the product. Utility Model Content

[0003] In order to solve the above technical problems, the utility model is a throttle valve pressure regulating mechanism, comprising: a cylinder, a piston mechanism, a reflux mechanism and a flow guiding mechanism, wherein the piston mechanism is arranged on the right side inside the cylinder, and the flow guiding mechanism is arranged on the left side inside the cylinder; the piston mechanism comprises: a spin switch and a sliding valve, the reflux mechanism comprises: a reflux conduit and a reflux valve, the flow guiding mechanism comprises: a spring base, a return spring, a flow guiding pipe, a sealing ring, a support rod, a pressure sensor and a pressure relief valve, the cylinder is provided with an inner cylinder, four flow guiding pipes outside the cylinder are connected to the inner cylinder, the cylinder is provided with a reflux conduit, and a reflux valve is provided in the pipeline The spin switch is arranged on the outside of the cylinder body, including: a motor and a signal receiver. The spin switch can receive signals to automatically control the rotation of the motor or manually control the rotation of the motor. The sliding valve is an "O" structure arranged outside the cylinder body and inscribed with the left cylinder body. The valve body is provided with threads, and sealing strips are provided at the front and back of the valve body. The spring base is divided into two parts. The left spring base is bolted to the middle plate of the inner cylinder body, and the right spring base is bolted to the right plate of the inner cylinder body. The reset spring is arranged between the two spring bases. The support rod is a retractable structure, and a spring is arranged at the bottom of the support rod. The pressure sensor is arranged on the right side of the cylinder body, and the pressure relief valve is arranged on the right side of the cylinder body.

[0004] The beneficial effects of the utility model are:

[0005] The pressure sensor of this equipment is associated with the spin switch. The spin switch signal receiver receives the pressure signal transmitted by the pressure sensor and automatically adjusts the forward and backward movement of the sliding valve to control the size of the diversion hole. The spin switch also has a manual adjustment mode to manually adjust the sliding valve to achieve diversion hole control.

[0006] This device is equipped with a support rod. When the pressure increases and the spring is compressed to the minimum stroke of the support rod, the support rod supports the upper and lower spring bases to prevent the pressure sensor from being crushed. When the continuous pressure reaches the preset threshold of the pressure sensor, an alarm is issued and the pressure relief valve can be manually adjusted to achieve pressure relief.

[0007] The utility model has an ingenious concept and a simple structure. It adjusts the diversion flow rate by adjusting the size of the diversion hole, increases or decreases the impact with the liquid in the cylinder, and affects the pressure in the cylinder. It eliminates the risk of the piston exceeding the high-pressure limit end in the cylinder without knowing it, which leads to the risk of the cylinder bursting. It reduces the serious problems caused by rapid wear of the rubber ring, pressure reduction, and resistance, and improves the serious impact on the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In the figure, the throttle valve pressure regulating mechanism comprises a cylinder body (1), a pressure relief valve (2), a support rod (3), a spring base (4), a sealing ring (5), a spin switch (6), a sliding valve (7), a return spring (8), a pressure sensor (9), a flow guide tube (10), a reflux conduit (11), and a reflux valve (12).

[0009] Figure 1 This is a schematic diagram of the structure of the utility model:

[0010] Figure 2 This is a side view of the structure of the utility model;

[0011] Figure 3 This is a top view of the structure of the utility model;

[0012] Figure 4 This is a schematic diagram of the spin switch and slide valve of the utility model; DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the technical solution of the present device, the present device is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] like Figure 1-4 The present invention discloses a throttle valve pressure regulating mechanism, comprising: a cylinder body (1), a piston mechanism and a flow guiding mechanism, wherein the piston mechanism is arranged on the right side inside the cylinder body (1), and the flow guiding mechanism is arranged on the left side inside the cylinder body (1); the piston mechanism comprises: a spin switch (6) and a sliding valve (7), and the flow guiding mechanism comprises: a spring base (4), a return spring, a sealing ring (5), a support rod (3), a pressure sensor (9) and a pressure relief valve (2).

[0015] In some embodiments, the cylinder body (1) is provided with an inner cylinder body, four guide pipes (10) on the outside of the cylinder body (1) are connected to the inner cylinder body, and an angle is set at the outlet of the guide pipe (10). By adjusting the flow rate in the guide pipe (10), the impact force generated by the guide pipe is controlled, thereby reducing the pressure in the cylinder body (1). The cylinder body (1) is provided with a reflux conduit (11), and a reflux valve (12) is provided in the conduit.

[0016] In some embodiments, the spin switch (6) is arranged on the outside of the cylinder body (1) and includes a motor and a signal receiver. The spin switch (6) can receive a signal to automatically control the rotation of the motor or manually control the rotation of the motor. When the signal receiver of the spin switch (6) receives the pressure signal transmitted by the pressure sensor (9), the signal sensor drives the motor to rotate. The sliding valve (7) is an "O" structure and is arranged in the cylinder body (1) and is cut into the left cylinder body (1). The valve body is provided with threads. Sealing strips are provided at the front and rear of the sliding valve (7). The rotation of the motor drives the sliding valve (7) to move forward or backward, thereby controlling the size of the diversion hole and controlling the flow rate in the diversion pipe (10).

[0017] In some embodiments, the spring base (4) is divided into two parts, the left spring base (4) is bolted to the middle plate of the cylinder body (1), and the right spring base (4) is bolted to the right plate of the cylinder body (1). The return spring is arranged between the two spring bases (4). The return spring is squeezed and contracted when pressure is applied, and recovers when the pressure is reduced. The support rod is a telescopic structure, and a spring is arranged on the inner side of the bottom of the support rod. When the pressure increases to compress the return spring (8) to the minimum travel distance of the support rod (3), the support rod (3) supports the left and right spring bases (4) to prevent the pressure sensor (9) from being squeezed.

[0018] In some embodiments, the pressure sensor (9) is arranged on the right side inside the cylinder body (1), and the pressure relief valve (2) is arranged on the right side outside the cylinder body (1). When the continuous pressure reaches a preset threshold of the pressure sensor (9), an alarm is issued, and the pressure relief valve (2) can be manually adjusted to release the pressure and stabilize the pressure in the cylinder.

[0019] Example

[0020] like Figure 1-4As shown, a throttle valve pressure regulating mechanism is provided. The device is provided with four guide pipes (10) and a return pipe. By changing the flow direction of the liquid, the forces between the liquids cancel each other out, thereby reducing the pressure in the left and right cylinder bodies (1). In actual operation, the liquid inlet direction is raised to enter the throttle valve through the left side. The liquid will exert pressure on the middle cover plate of the cylinder body (1), so that the return spring (8) is compressed. The pressure sensor (9) transmits a pressure signal to the spin switch (6) according to the pressure received. The signal receiving device of the spin switch (6) After receiving the pressure signal, the device drives the motor of the spin switch (6) to rotate, driving the sliding valve (7) to rotate and move backward along the inner track of the cylinder body (1), thereby increasing the opening area of ​​the guide tube (10) and the liquid flow in the guide tube (10), thereby increasing the pressure on the left spring base (4), which is opposite to the original receiving direction, forming a mutual offset, reducing the pressure in the cylinder body (1). At the same time, the equipment is provided with a return conduit (11), and the pressure in the cylinder body (1) can be further balanced through the return valve (12).

[0021] When a sudden failure occurs and the pressure continues to increase, the pressure sensor (9) continues to send signals to the signal receiver. When the pressure on the pressure sensor (9) exceeds a preset threshold, an alarm is sounded to remind the operator to manually open the pressure relief valve (2) to reduce the pressure in the cylinder. At the same time, the support rod (3) is within the minimum stroke to prevent the pressure sensor (9) from being damaged by pressure.

[0022] When the flow in the guide tube (10) is relatively large and the pressure generated on the left spring base (4) is greater than the thrust in the flow direction, the reset spring (8) is stretched, and the pressure sensor (9) sends a pressure signal to the signal receiver of the spin switch (6). The signal receiver drives the motor to rotate and drives the sliding valve (7) to move forward along the inner track of the cylinder body (1), thereby reducing the opening area of ​​the guide tube (10) and the liquid flow in the guide tube (10), thereby reducing the pressure generated on the left spring base (4). The reset spring (8) is restored by the pressure in the liquid inlet direction.

[0023] The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

Claims

1. A throttle valve pressure regulating mechanism, characterized in that: include: A cylinder body, a piston mechanism, a reflux mechanism and a flow guiding mechanism, wherein the piston mechanism is arranged on the right side inside the cylinder body, and the flow guiding mechanism is arranged on the left side inside the cylinder body; The piston mechanism includes: a spin switch and a sliding valve, the reflux mechanism includes: a reflux conduit and a reflux valve, the diversion guide mechanism includes: a spring base, a reset spring, a guide tube, a sealing ring, a support rod, a pressure sensor and a pressure relief valve, the cylinder body is provided with an inner cylinder body, four guide tubes on the outside of the cylinder body are connected to the inner cylinder body, the cylinder body is provided with a reflux conduit, and the pipeline is provided with a reflux valve, the spin switch is arranged on the outside of the cylinder body, and includes: a motor and a signal receiver, the spin switch can receive signals to automatically control the rotation of the motor or manually control the rotation of the motor, the sliding valve is an "O" structure arranged in the cylinder body and inscribed with the left cylinder body, the valve body is provided with threads, and sealing strips are provided at the front and back of the valve body, the spring base is divided into two parts, the left spring base is bolted to the middle plate of the inner cylinder body, the right spring base is bolted to the right plate of the inner cylinder body, the reset spring is arranged between the two spring bases, the support rod is a telescopic structure, and a spring is arranged at the bottom of the support rod, the pressure sensor is arranged on the right side of the cylinder body, and the pressure relief valve is arranged on the right side of the cylinder body.

Images