Water flow adjusting mechanism of gas water heater

Abstract

The utility model discloses a water flow adjusting mechanism of a gas water heater, relates to the field of water control valves, and is used for solving the problem that moving parts of an electric control valve adopted by a traditional gas water heater are easily abraded due to the fact that counter-acting force is directly applied to an electric control driving component in the electric control valve by a valve piece. Comprising a valve shell, a water inlet and a water outlet which are formed in the surface of the valve shell, and further comprises a blocking piece arranged in the valve shell and a driving mechanism for driving the blocking piece to linearly move, a valve plug capable of linearly moving to seal the water outlet is arranged in the valve shell, and the moving path of the blocking piece is perpendicular to the moving path of the valve plug. The stop ball perpendicular to the moving direction of the valve plug is adopted to exert abutting force on the valve plug, the water inlet is kept to be blocked by the valve plug, the counter-acting force of an external water source is completely borne by the stop ball, an electric control driving component is not affected by the counter-acting force, the driving abrasion strength is reduced, the failure rate is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of water control valves, and in particular to a water flow regulating mechanism for a gas water heater. Background Art

[0002] The water inlet pipe of the gas water heater is controlled by an electric control valve to control the water flow into the water heater. The electric control valve used is mostly a plunger valve structure. The pipeline switch and flow rate are controlled by the electric control driver to control the amplitude of the valve to open the pipeline. The valve and the electric control driver are often distributed in a straight line. The force of the external water pressure on the valve will be directly applied to the electric control driver. The long-term pressure on the electric control driver will easily cause wear of its moving parts, affecting the accuracy of valve control. Utility Model Content

[0003] In order to make up for the deficiencies of the existing technical problems, the purpose of the present utility model is to provide a water flow regulating mechanism for a gas water heater, which is used to solve the problem that the internal electric control drive components of the electric control valve used in traditional gas water heaters are directly subjected to the reaction force exerted by the valve parts, which easily causes wear of its moving parts.

[0004] In order to solve the problems of the prior art, the technical solutions of the present utility model are as follows:

[0005] A water flow regulating mechanism for a gas water heater includes a valve housing and a water inlet and a water outlet arranged on the surface of the valve housing, and also includes a blocking member arranged inside the valve housing and a driving mechanism for driving the blocking member to move linearly. A valve plug that can move linearly to close the water outlet is provided inside the valve housing, and the moving path of the blocking member is perpendicular to the moving path of the valve plug. The surface of the valve plug has an arcuate touch handle, and the inclined surface of the blocking member abuts the arcuate touch handle to move the valve plug toward the water inlet position. The arcuate touch handle has a flat portion parallel to the moving path of the blocking member, and the blocking member abuts against the flat portion to cause the valve plug to block the water inlet.

[0006] Preferably, the valve plug is fixed with a guide rod, and the guide rod is elastically slidably plugged into the valve housing through a spring, so that the valve plug has a movable path facing the water inlet.

[0007] Preferably, the blocking member includes a blocking ball that contacts the arc-surface contact handle and a shaft cylinder connected to the driving mechanism.

[0008] Preferably, the driving mechanism includes a stepping motor and a screw driven to rotate by the stepping motor, and the screw is threadedly connected to the shaft cylinder.

[0009] Preferably, the water outlet is facing the moving direction of the blocking member, and when the blocking ball contacts the arc-surface touch handle to block the water inlet, the blocking ball can simultaneously block the water outlet.

[0010] Preferably, the inner side of the water outlet has a convex opening, and the inner ring opening of the convex opening is adapted to the spherical surface of the blocking ball.

[0011] Preferably, a flexible sealing ring is provided at the portion of the water outlet where the blocking ball is adapted.

[0012] Preferably, the valve plug and the inner opening of the water inlet are in a matching conical shape.

[0013] Compared with the prior art, the advantages of the present invention are as follows:

[0014] 1. The utility model adopts a baffle ball perpendicular to the moving direction of the valve plug to exert a resistance force on the valve plug, so as to keep the valve plug blocking the water inlet. The reaction force of the external water source is completely borne by the baffle ball, and the electronically controlled drive components are not affected by the reaction force, thereby reducing the drive wear intensity, reducing the failure rate and extending the service life.

[0015] 2. The movement direction of the blocking ball of the utility model is facing the water outlet. When the blocking ball laterally hits the valve plug to block the water inlet, the blocking ball also blocks the water outlet, so that the device has a double blocking effect to avoid water leakage and seepage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the waterway opening structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the water channel closing structure of the utility model.

[0019] Figure 4 This is a schematic diagram of the valve plug structure of the present utility model.

[0020] Figure numerals: 1, valve housing; 2, water inlet; 3, water outlet; 31, convex port; 4, stepping motor; 5, valve plug; 51, arc-surface touch handle; 52, guide rod; 53, flat part; 6, ball stop; 7, shaft cylinder; 8, screw. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] like Figure 1-4As shown, the water flow regulating mechanism of the gas water heater has a closed valve housing 1, and a water inlet 2 and a water outlet 3 are respectively arranged on the right side and the bottom side of the valve housing 1. The water inlet 2 is used to connect to an external water source, and the water outlet 3 is used to connect to the pipeline of the gas water heater. A valve plug 5 is arranged at a position corresponding to the water inlet 2 inside the valve housing 1, and the valve plug 5 can fully block the water inlet 2. The valve plug 5 fixes two guide rods 52, and the guide rods 52 are slidably plugged into the left side of the valve housing 1 so that the valve plug 5 can move horizontally left and right to open or close the water inlet 2. A spring is arranged on the outside of the guide rod 52 to keep the valve plug 5 away from the water inlet 2. The back side of the valve plug 5 has an arcuate touch handle 51, the upper part of the arcuate touch handle 51 is arcuate, and the lower part of the arcuate touch handle 51 is a vertical plane portion 53;

[0023] like Figure 2-3 As shown, the driving mechanism includes a stepper motor 4, which is installed on the top of the valve housing 1. The output shaft of the stepper motor 4 is connected to a screw 8 that rotates and penetrates the interior of the valve housing 1. The blocking member provided inside the valve housing 1 includes a blocking ball 6, which is fixedly connected to a shaft cylinder 7. The shaft cylinder 7 is vertically slidably plugged into the top of the valve housing 1 and is restricted by a sliding key to prevent the shaft cylinder 7 from rotating and only allow it to move vertically up and down. The screw 8 is threadedly connected to the shaft cylinder 7, and the blocking ball 6 contacts the arc-shaped touch handle 51.

[0024] When the valve is opened to allow water to flow into the gas water heater, the stepper motor 4 drives the screw rod 8 to rotate, and the screw rod 8 is threaded to push and the blocking ball 6 moves upward, so that the blocking ball 6 avoids the valve plug 5. Under the action of the elastic force and the guidance of the guide rod 52, the valve plug 5 moves to the left, opening the water inlet 2. Water flows from the water inlet 2 into the valve housing 1 and is then directed to the gas water heater through the water outlet 3. By controlling the upward movement of the blocking ball 6, the opening range of the valve plug 5 is adjusted, thereby realizing the control of the water inlet amount;

[0025] When the water channel is closed, the stepper motor 4 is turned on to drive the screw 8 to reverse, causing the baffle ball 6 to descend. The inclined surface of the baffle ball 6 squeezes the arc-shaped touch handle 51 to make the valve plug 5 approach the water inlet 2. When the baffle ball 6 is squeezed to the flat part 53, the valve plug 5 completely blocks the water inlet 2. Since the baffle ball 6 is in vertical contact with the flat part 53, the reaction force exerted by the external water pressure on the valve plug 5 is transmitted to the baffle ball 6 in the horizontal direction, which is perpendicular to the output transmission direction of the stepper motor 4. The stepper motor 4 and the transmission components will not be affected by the water pressure reaction force.

[0026] like Figure 2-3 As shown, the water outlet 3 is located at the bottom of the valve housing 1, so that the water outlet 3 is vertically aligned with the blocking ball 6. The inner side of the water outlet 3 has a protrusion 31, and the inner ring of the protrusion 31 is adapted to the spherical surface of the blocking ball 6. When the blocking ball 6 descends and hits the arc-shaped touch handle 51 to completely block the valve plug 5 from the water inlet 2, the blocking ball 6 can be simultaneously squeezed at the position of the protrusion 31 to block the water outlet 3, thereby achieving double blocking and avoiding leakage of the valve.

[0027] A flexible sealing ring is provided at the portion of the water outlet 3 where the baffle ball 6 is adapted to increase the sealing strength between the baffle ball 6 and the protrusion 31 .

[0028] The valve plug 5 and the inner opening of the water inlet 2 are adapted to each other in a conical shape, so that the valve plug 5 and the water inlet 2 have a good bonding surface and a good sealing effect.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water flow regulating mechanism for a gas water heater, comprising a valve housing (1) and a water inlet (2) and a water outlet (3) arranged on the surface of the valve housing (1), further comprising a blocking member arranged inside the valve housing (1) and a driving mechanism for driving the blocking member to move linearly, wherein a valve plug (5) is arranged inside the valve housing (1) and can move linearly to close the water outlet (3), and is characterized in that: The moving path of the blocking member is perpendicular to the moving path of the valve plug (5); the surface of the valve plug (5) has an arcuate contact handle (51); the inclined surface of the blocking member abuts the arcuate contact handle (51) to move the valve plug (5) toward the water inlet (2); the arcuate contact handle (51) has a plane portion (53) parallel to the moving path of the blocking member; the blocking member abuts the plane portion (53) to cause the valve plug (5) to block the water inlet (2).

2. The water flow regulating mechanism of the gas water heater according to claim 1, characterized in that: The valve plug (5) is fixed with a guide rod (52), and the guide rod (52) is elastically slidably plugged into the valve housing (1) via a spring, so that the valve plug (5) has a movable path facing the water inlet (2).

3. The water flow regulating mechanism of the gas water heater according to claim 1, characterized in that: The blocking member comprises a blocking ball (6) that contacts the arc-surface contact handle (51) and a shaft cylinder (7) connected to a driving mechanism.

4. The water flow regulating mechanism of the gas water heater according to claim 3, characterized in that: The driving mechanism comprises a stepping motor (4) and a screw (8) driven to rotate by the stepping motor (4), and the screw (8) is threadedly connected to the shaft cylinder (7).

5. The water flow regulating mechanism of the gas water heater according to claim 3, characterized in that: The water outlet (3) faces the moving direction of the blocking member, and when the blocking ball (6) contacts the arc-surface contact handle (51) to block the water inlet (2), the blocking ball (6) can simultaneously block the water outlet (3).

6. The water flow regulating mechanism of the gas water heater according to claim 5, characterized in that: The inner side of the water outlet (3) is provided with a convex opening (31), and the inner ring opening of the convex opening (31) is adapted to the spherical surface of the blocking ball (6).

7. The water flow regulating mechanism of a gas water heater according to claim 6, characterized in that: A flexible sealing ring is provided at the location of the water outlet (3) adapted to the blocking ball (6).

8. The water flow regulating mechanism of a gas water heater according to claim 1, characterized in that: The valve plug (5) and the inner opening of the water inlet (2) are in a matching conical shape.

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