CN2599333Y - Structure of proportional valve - Google Patents

Abstract

The utility model is a structure of a proportional valve, which is composed of an upper cover, a base and a core body. The surrounding gap, when the coil receives the current from the conductive column, the coil generates a magnetic force, which repels or attracts with the magnet on the base. If the heart is pushed outward, it will be a repulsive force, otherwise, the heart will shrink inward. , is the attraction force; and during this movement, when the heart body shakes, the fixed shaft is arranged around the rubber pad and the spring to prevent the heart body from shaking too much and affecting the accuracy of the control, and to prevent the rubber pad from being damaged during use. Falling off due to vibration and spring deflection due to vibration.

Description

The structure of the proportional valve

technical field

The utility model relates to a structure of a proportional valve.

Background technique

As shown in Fig. 1 and Fig. 2, when the coil A51 of the core A5 is energized, a magnetic force is generated and a repelling force is generated by the magnet A22 attached to the metal edge ring A24 to control the movement of the core A5, and the top of the core A5 is provided with a spring A3 and When the rubber pad A4 is moved by the repulsive force, the gap D is too large to cause the core A5 to shake greatly, and the rubber pad A4 and the spring A3 will be offset or even fall off due to the vibration, resulting in proportional The control of valve A is inaccurate; if the proportional valve A is mostly used to control the inflation and deflation of the air bag of the sphygmomanometer, the blood pressure measurement will be inaccurate, resulting in negligence in medical care.

Contents of the invention

The purpose of this utility model is to provide a proportional valve structure, which is composed of an upper cover, a base and a core body. The gap around the upper rubber pad; the upper cover is covered on the base, and is fixed to the base with screws. The base is equipped with a metal edge ring, and a magnet is attached to the metal edge ring; there is a rubber pad and a spring on the top of the core body. There is a mandrel under the body, and there is a coil outside the mandrel. The mandrel penetrates into the mandrel tube of the base, and the coil is set outside the mandrel tube. magnetic field.

When the coil receives the current from the conductive column, the coil generates a magnetic force, which repels or attracts with the magnet on the base. If the heart is pushed outward, it is a repulsive force, otherwise, the heart shrinks inward, which is an attractive force; During this movement, when the heart body shakes, the fixed shaft is arranged around the rubber pad and the spring to prevent the heart body from shaking too much and affecting the control accuracy, and at the same time prevent the rubber pad from falling off due to vibration during use. The spring is deflected by shock.

Description of drawings

Fig. 1 is a three-dimensional exploded view of a traditional proportional valve;

Fig. 2 is a sectional view of a traditional proportional valve;

Fig. 3 is a perspective view of the utility model;

Fig. 4 is a three-dimensional exploded view of the utility model;

Fig. 5 is a sectional view of the utility model;

Fig. 6 is a perspective view of the upper cover of the utility model;

Fig. 7 is a bottom view of the upper cover of the utility model;

Fig. 8 is a diagram of an embodiment of the present utility model.

Explanation of reference signs: A proportional valve; A1 upper cover; A2 base; A22 magnet; A23 mandrel tube; A24 metal side ring; A3 spring; A4 rubber pad; A5 core body; A51 coil; ;B1 upper cover; B11 screw hole; B12 screw; B2 base; B21 screw hole; B22 magnet; B23 mandrel tube; B24 metal edge ring; B25 conductive column; B3 spring; B4 rubber pad; B52 mandrel; C fixed shaft; D circuit board; E pressure sensor; F air bag; G pump (pump); H catheter.

Detailed ways

The utility model provides a structure of a proportional valve, as shown in Figure 3 to Figure 5, the proportional valve B is composed of an upper cover B1, a base B2 and a core body B5, and its structure is that a metal edge is arranged in the base B2 Ring B24, a magnet B22 is attached to the metal side ring B24; the core body B5 has a mandrel B52, and a coil B51 outside the mandrel B52, the mandrel B52 penetrates into the mandrel tube B23 of the base B2, and the coil B51 is sleeved on the mandrel Outside the tube B23, the coil B51 is connected with the conductive column B25 of the base B2 by a wire, so that power flows into the coil B51 to generate a magnetic field.

On the top of the core body B5, there is a rubber pad B4 and a spring B3. After the mandrel B52 of the core body B2 penetrates the mandrel tube B23 of the base B2, the upper cover B1 is placed on the base B2, and the screw B12 is inserted into the upper cover B1 The screw hole B11 of the base is screwed to the screw hole B21 of the base B2.

As shown in Figures 5 to 7, the upper cover B1 is equipped with an array of fixed shafts C inside. After the upper cover B1 covers the base B2, the gap D1 around the rubber pad B4 above the core B5 is reduced. After the current of the column B25 (please refer to Fig. 4), the coil B51 generates a magnetic force, which repels or attracts each other with the magnet B22 located on the base B2. If the core B5 is pushed outward, it is a repulsive force. On the other hand, the retraction of the heart body B5 is an attraction force; and during this movement, when the heart body B5 shakes, because the fixed axis C is arranged around the rubber pad B4 and the spring B3, it prevents the heart body B5 from causing excessive shaking and It affects the accuracy of the control, and at the same time prevents the rubber pad B4 from falling off due to vibration and the spring B3 from being deflected due to vibration during use.

As shown in Figure 6, the catheter H is connected to the pressure sensor E, the airbag F, the pump G and the proportional valve B. When the pump G pumps air, the proportional valve B is closed by the control of the circuit board D. At this time, the airbag F is filled with gas to help Pu G stops inflating, because the catheter H is connected to the air bag, the pressure is equal, the pressure sensor E senses the pressure inside the catheter H, if the pressure is too high, a signal is transmitted to the circuit board D through a signal line I, and the circuit board D controls the proportional valve B to deflate gradually, so that the pressure of the air bag F reaches the required value.

As mentioned above, the structure of the proportional valve provided by the utility model is composed of an upper cover, a base and a core body. The gap around the upper rubber pad, and because the fixed shaft is set around the rubber pad and the spring, prevents the core body from shaking too much and affecting the control accuracy, and at the same time prevents the rubber pad from falling off due to vibration during use and the spring from being shaken due to vibration. offset.

The utility model is compared with prior art below:

current technology

1. The mind and body are easily shaken by vibration.

2. The components of the heart body are prone to fall off due to shaking.

The utility model

1. Improve the stability of the proportional valve in use and control.

2. Use the fixed shaft to reduce the deviation of the core body due to shaking.

3. The fixed shaft stabilizes the spring and the rubber pad so that it will not fall off due to shaking.

The above description is only a preferred feasible embodiment of the utility model, and is not used to limit the scope of the utility model, so any equivalent structure using the specification and drawings of the utility model can be directly or indirectly applied to other related All technical fields should be included within the spirit and scope of the present utility model.

Claims (1)

1. The structure of a proportional valve, which is composed of an upper cover, a base and a core body, is characterized in that: the upper cover is provided with an array of fixed shafts inside, the upper cover is covered on the base, and is fixed on the base with screws, and the inner part of the base is There is a metal edge ring, and a magnet is attached to the metal edge ring; a rubber pad and a spring are arranged above the core body, and a mandrel is arranged below the core body, and there is a coil outside the mandrel, and the mandrel penetrates into the mandrel tube of the base, The coil is sheathed outside the mandrel tube, and the coil is connected with the conductive column of the base with a wire, so as to facilitate the flow of power into the coil to generate a magnetic field.

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