CN106641388B - An electromagnetic drive structure for container valve - Google Patents

Abstract

The invention provides an electromagnetic driving structure for a container valve, which comprises the container valve and an electromagnetic driving assembly, wherein the container valve comprises a valve body and a valve core, the electromagnetic driving assembly comprises a connecting seat, an electromagnet, a movable iron core and a push rod, a positioning hole is formed in the valve body, a positioning channel is formed in the connecting seat, balls are arranged in the positioning channel and the positioning hole, a positioning groove is formed in the valve core, the push rod is inserted into the positioning channel in an initial state, the ball close to the push rod abuts against the push rod, and the ball close to the valve core abuts against the positioning groove. By adopting the electromagnetic driving structure, when a fire disaster occurs, the electromagnet is electrified to drive the movable iron core to move in the direction away from the valve body, the ball is not limited, the valve core moves downwards under the pressure action of the storage container to open the container valve, the requirement on the matching precision between the valve core and the valve body is low, and the processing cost is relatively low.

Description

An electromagnetic drive structure for container valve

technical field

The invention relates to a fire fighting equipment, in particular to an electromagnetic drive structure for a container valve.

Background technique

The container valve of the traditional suspended gas fire extinguishing device is usually driven by a spring. The fire extinguishing agent needs to overcome the resistance generated by the spring during use, which will lose part of the kinetic energy, thereby reducing the spraying range. The condition that the container valve cannot be fully opened will affect the fire extinguishing effect. At present, there are also some suspended gas fire extinguishing devices in the market that use solenoid valves to drive the container valve. The electromagnet pierces the diaphragm set in the container valve to relieve pressure, and the valve core of the container valve is opened by the pressure difference. Because the electromagnet pierces the membrane The amount of vented air behind the film and the amount of air intake of the valve core need to be strictly controlled, resulting in high requirements for the matching accuracy between the valve core and the valve body of the container valve, and relatively high processing costs.

In view of this, the applicant has conducted in-depth research on the electromagnetic drive structure for the container valve, and this case was born.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electromagnetic drive structure for a container valve with relatively low requirements on the accuracy of the valve core and the valve body and relatively low processing cost.

In order to achieve the above object, the present invention adopts the following technical solutions:

An electromagnetic drive structure for a container valve, comprising a container valve and an electromagnetic drive assembly, the container valve includes a valve body and a valve core located in the valve body, the electromagnetic drive assembly includes a fixed connection on the valve body The connecting seat, the electromagnet fixedly connected to the connecting seat, the movable iron core arranged inside the electromagnet, and the ejector rod connected to one end of the movable iron core, the valve body is provided with a positioning hole, The connecting seat is provided with a positioning channel that communicates with the positioning hole, a plurality of balls are arranged in the positioning channel and the positioning hole, and the valve core is provided with a positioning groove matched with the balls. In the initial state, the ejector rod is inserted into the positioning channel, the balls are pressed against each other in turn, and the balls close to the ejector rod abut against the ejector rod, and the balls close to the valve core are pressed against each other. The ball abuts on the positioning groove.

As an improvement of the present invention, a pull rod is connected to one end of the movable iron core away from the ejector rod, and a safety pin for preventing the pull rod from moving is inserted through the pull rod.

As an improvement of the present invention, the positioning channel includes a horizontal section, a vertical section and an inclined section sequentially connected from one end close to the movable iron core to the other end, and the inclined section is close to the horizontal section at one end of the positioning hole. The position is lower than the horizontal position of the other end, and the positioning hole and the inclined section are located on the same straight line.

As an improvement of the present invention, the end of the ejector rod away from the movable iron core is tapered. In an initial state, the ejector rod is inserted into the horizontal section, and each of the balls is covered with the vertical section. the straight section, the inclined section and the positioning hole.

Adopting the above-mentioned technical scheme, the present invention has the following beneficial effects:

1. Using the electromagnetic drive structure of the present invention, when a fire occurs, the electromagnet is energized to drive the movable iron core to move away from the valve body, the ball loses its restriction, and the valve core moves downward under the pressure of the storage container, opening the container. Compared with the traditional solenoid valve, the valve has lower requirements on the matching accuracy between the valve core and the valve body, and the processing cost is relatively low; in addition, due to the use of balls, the friction force during the opening action is very small, Flexible and reliable action.

2. The balls of the ejector rod and the vertical section are in a state of mutual perpendicular force, and the balls of the vertical section act on the cylindrical section of the ejector rod. No matter how large the upward thrust of the balls is, it will not push the ejector rod and start the fire extinguishing device. Effectively ensure the stability and reliability of the fire extinguishing device.

3. The inclined section on the positioning hole, when the valve core of the container valve is reset, the ball will automatically roll to the positioning groove through the inclined section under the action of its own gravity.

4. After the electromagnetic drive structure is powered on, if the balls in the vertical section roll to the horizontal section of the positioning channel, push the pull rod, and use the conical surface at one end of the ejector rod to effectively and quickly push the balls in the horizontal section to the vertical section. straight section.

5. By setting the pull rod, it is convenient to manually open the container valve in the event of a power failure

Description of drawings

Fig. 1 is the structural representation of the suspended gas fire extinguishing device of the present invention;

Fig. 2 is the structural representation of the container valve of the present invention;

3 is a schematic top view of the structure of the valve core of the present invention;

4 is a schematic structural diagram of a receiving seat of the present invention;

Fig. 5 is the cutaway structure schematic diagram of A-A position in Fig. 4;

FIG. 6 is a schematic top view of the structure of the swaying plate of the present invention.

The corresponding symbols in the figures are as follows:

10-hanging bracket; 20-storage container;

21- container outlet; 30- container valve;

31- valve body; 32- valve core;

32a- valve core body; 32b- sealing plug;

33-inlet valve port; 34-outlet valve port;

35-inner cavity; 35a-pressurization chamber;

35b - discharge chamber; 36 - sealing channel;

37-blind hole; 38-inclined hole;

39-pressure gauge; 40-electromagnetic drive assembly;

41-connecting seat; 42-electromagnet;

43- movable iron core; 44- ejector rod;

45 - positioning channel; 45a - horizontal segment;

45b - vertical section; 45c - inclined section;

46-ball; 47-tie rod;

48-safety latch; 51-positioning hole;

52-positioning slot; 60-spray assembly;

61-spray body; 61a-spray inlet;

61b-spray outlet; 61c-transition channel;

62- receiving seat; 62a- inner ring body;

62b-outer ring body; 62c-rib;

62d - inclined guide surface; 63 - sway plate;

63a - missing groove; 64 - sway channel.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 , the suspended gas fire extinguishing device provided in this embodiment includes a suspension bracket 10 and a storage container 20 mounted on the suspension bracket 10. The storage container 20 is a container used in a conventional suspended gas fire extinguishing device, and its lower end has a The container outlet 21 is connected to the container valve 30 .

The container valve 30 can be a conventional container valve, as shown in FIG. 1 , FIG. 2 and FIG. 3 , the present embodiment provides a container valve that helps to improve the spraying range and spraying speed of the fire extinguishing agent, the container valve 30 includes a valve The valve body 31, the valve core 32 and the electromagnetic drive assembly 40 for driving the movement of the valve core 32, the upper end of the valve body is provided with an inlet valve port 33, and the lower end is provided with an outlet valve port 34, wherein the inlet valve port 33 is used to communicate with the container The outlet 21 is connected, that is, the upper end of the container valve 30 has an inlet valve port 33 connected to the container outlet 21 , and the lower end has a valve outlet 34 . In addition, the valve body 31 is provided with an inner cavity 35 communicating with the valve outlet 34 , a sealing channel 36 is arranged between the inner cavity 35 and the valve inlet 33 , and the cross-sectional diameter of the sealing channel 36 is smaller than that of the inner cavity 35 .

The valve core 32 includes a valve core body 32a slidably connected to the inner cavity 35 and a sealing plug 32b matched with the sealing channel 36. The sealing plug 32b is arranged on the upper end of the valve core body 32a, and the sealing plug 32b and the valve core body 32a are integrally formed. connection, that is, the two are the same component. The valve core body 32a is provided with a blind hole 37 whose opening faces the valve outlet. The mouth of the blind hole 37 is trumpet-shaped, that is, the opening of the blind hole 37 faces downward, and the side wall of the upper half of the blind hole 37 is Straight walls, the side walls of the lower half are flared. The upper end of the valve core body 32a is provided with an inclined hole 38 that communicates with the blind hole 37. The inclined hole 38 and its projection line cannot be located in the radial or axial direction of the valve core body 32a. Preferably, the inclined hole 38 has A plurality of inclined holes 38 are evenly distributed around the central axis of the valve core body 32a, and each inclined hole 38 is inclined clockwise from the upper end to the lower end, so that when the airflow passes through each inclined hole 38, many more inclined holes can be formed. To swirl the airflow and push the valve core 32 to rotate, and the horn-shaped mouth of the blind hole 37 helps to increase the vortex speed of the vortex airflow. When the airflow is ejected from the valve core 32, the fire extinguishing agent can be quickly sprayed To a relatively far position, the spraying range and spraying speed of the fire extinguishing agent are effectively improved.

Preferably, in this embodiment, the upper end of the valve core body 32a is in the shape of a cone, the sealing plug 32b is located in the middle of the cone shape, and the inclined hole 38 is located on the conical surface of the cone shape. The valve core body 32a divides the inner cavity 35 into a pressurizing chamber 35a and a discharging chamber 35b, wherein the pressurizing chamber 35a communicates with the sealing passage 36, and the sum of the cross-sectional areas of the inclined holes 38 is smaller than the cross-sectional area of the sealing passage 36 area, which facilitates the pressurization of the gas in the pressurizing chamber 35a.

In addition, the valve body 31 is provided with a pressure gauge 39 for measuring the pressure in the inlet valve port 33, so that the pressure information of the position of the inlet valve port can be easily obtained.

In the initial state, the valve core 32 is located at the upper part of the inner cavity 35, and the sealing plug 32b is blocked on the sealing channel 36; when a fire occurs, the valve core 32 moves downward under the action of the electromagnetic drive assembly 40, so that the sealing plug 32b is removed from the The air in the storage container 20 flows into the pressurizing chamber 35a through the sealing passage 36, and then flows into the discharge chamber 35b through the inclined hole 38 and the blind hole 37 in turn to form a vortex air flow, and then sprays from the valve outlet 34 at the container valve 30.

The electromagnetic drive assembly 40 may be a conventional electromagnetic drive assembly. In this embodiment, an electromagnetic drive assembly 40 with relatively low processing cost is provided. The electromagnetic drive assembly 40 includes a connection seat 41 fixedly connected to the valve body 31 , a fixed The electromagnet 42 connected to the connection seat 41 , the movable iron core 43 disposed inside the electromagnet 42 and the ejector rod 44 connected to one end of the movable iron core 43 , wherein the end of the ejector pin 44 away from the movable iron core 43 is tapered.

The valve body 31 is provided with a positioning hole 51 communicating with the inner cavity 35 , and the connecting seat 41 is provided with a positioning channel 45 communicating with the positioning hole 51 . Preferably, the positioning channel 45 includes a horizontal section 45a, a vertical section 45b and an inclined section 45c connected in sequence from one end close to the movable iron core 43 to the other end, wherein the horizontal section 45a is arranged horizontally and the vertical section 45b is arranged vertically, that is, The horizontal section 45a and the vertical section 45b are perpendicular to each other, the horizontal position of the inclined section 45c near one end of the positioning hole 51 is lower than the horizontal position of the other end, and the positioning hole 51 and the inclined section 45c are located on the same line, that is, the positioning hole 51 is also inclined. .

The positioning channel 46 and the positioning hole 51 are provided with a plurality of balls 46, and the valve core 32 is provided with a positioning groove 52 that cooperates with the balls 46. In the initial state, the ejector rod 44 is inserted into the horizontal section 45a of the positioning channel 45, and The cone-shaped end of the ejector rod 44 is located at the junction of the horizontal section 45a and the vertical section 45b, the balls 45 abut against each other in turn, and the balls 46 close to the ejector rod 44 abut on the conical end of the ejector rod 44, The balls 46 close to the valve core 32 pass through the positioning holes 51 and abut against the positioning grooves 52 . In this way, gravity can be used to ensure that the corresponding balls 46 always abut in the positioning grooves 42, and the reaction force transmitted by the valve core 32 to the balls 46 is not easily transmitted to the ejector rod 44, so as to ensure the stability and reliability of the closed state of the container valve 30 .

When a fire occurs, the electromagnet 42 is energized to drive the movable iron core 43 to move in a direction away from the valve body 31, and the ejector rod 34 also moves accordingly, and the ball 46 loses the abutment of the ejector rod 34. At this time, the valve core 32 is in the storage container 10. Under the action of the pressure, it moves downward, and at the same time pushes the ball 46 to move in the direction of the horizontal section 45a, so as to realize the opening of the container valve 30. It should be noted that after the valve core 32 moves down to the limit position, the conical surface of the upper end of the valve core body 32a cannot be lower than the center of the ball 46 close to the valve core 32 to prevent the ball 46 from rolling into the pressurizing chamber 35a. After the fire extinguishing is completed, the valve core 32 needs to be manually pushed up to reset.

Preferably, in this embodiment, a pull rod 47 is connected to the end of the movable iron core 43 away from the ejector rod 44, and the pull rod 47 is interspersed with a safety pin 48 for preventing the pull rod 47 from moving. 48 is pulled out from the pull rod 47, and the pull rod 47 is pulled to make the movable iron core 43 move away from the valve body 31, so as to realize the manual opening of the container valve 30.

The outlet 34 of the container valve 30 is provided with a spray assembly 60. As shown in Figures 1, 4, 5 and 5, the spray assembly 60 includes a spray body 61 and a receiving seat 62 that are coaxial with each other. One end of the discharge body 61 has a discharge inlet 61a matched with the valve outlet 34, and the other end has a discharge outlet 61b, and the discharge body 61 has a transition channel 61c for connecting the discharge inlet 61a and the discharge outlet 61b. , the receiving seat 62 is rotatably connected to the transition passage 61c, the outlet valve port 34 is inserted into the injection inlet 61a, and the receiving seat 62 is located directly below the valve outlet port 34.

The receiving seat 62 includes an inner ring body 62a and an outer ring body 62b arranged coaxially with each other, and a rib 62c is arranged between the inner ring body 62a and the outer ring body 62b. All the ribs 62c are located on the radial direction of the inner ring body 62a or the outer ring body 62b, and the two ribs 62c are arranged symmetrically with each other. Meanwhile, the side of the rib 62c facing the valve outlet 34 has an inclined guide surface 62d, and the included angle between the inclined guide surface 62d and the axial direction of the inner ring body 62a or the outer ring body 62b is 30°-60°, preferably is 45°. When in use, when the fire extinguishing agent flows through the receiving seat 62 driven by the gas, part of the gas will hit the inclined guide surface 62d, thereby driving the receiving seat 60 to rotate relative to the ejection body 61, and the rotation of the receiving seat 62 will in turn affect the gas. flow.

The inner ring body 62a is fixedly connected with a spray plate 63 coaxial with the inner ring body 62a. The spray plate 63 is located on the side of the spray body 61 away from the valve outlet 34. Sway channel 64. Since the swaying plate 63 rotates together with the receiving seat 62, the flow rate of the vortex air flow formed by the fire extinguishing agent and the gas can be further increased. Preferably, in this embodiment, the spray outlet 61b is trumpet-shaped, and the side of the spray plate 63 facing the spray body 61 has a conical surface that matches the spray outlet 61b, so that the spray channel 64 has a certain The inclination is conducive to the spraying of fire extinguishing agents.

In addition, there are notches 63a in the radial direction of the swaying plate 63, and the number of the notches 63a can be determined according to actual needs. In this embodiment, there are more than three notches 63a. In this way, the fire-extinguishing agent can flow directly below the fire-extinguishing device through the groove 63a, and extinguish the fire at the position directly below the fire-extinguishing device.

The present invention has been described in detail above in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited to the above-mentioned embodiments, and those skilled in the art can make various modifications to the present invention according to the prior art, such as changing the pressure in the above-mentioned embodiment. The table 39 is provided on the storage container 20, etc., which belong to the protection scope of the present invention.

Claims (3)

1. An electromagnetic driving structure for a container valve comprises the container valve and an electromagnetic driving component, and is characterized in that the container valve comprises a valve body and a valve core positioned in the valve body, the electromagnetic driving component comprises a connecting seat fixedly connected on the valve body, an electromagnet fixedly connected on the connecting seat, a movable iron core arranged in the electromagnet and a push rod connected at one end of the movable iron core, a positioning hole is arranged on the valve body, a positioning channel communicated with the positioning hole is arranged on the connecting seat, a plurality of balls are arranged in the positioning channel and the positioning hole, a positioning groove matched with the balls is arranged on the valve core, the push rod is inserted in the positioning channel under an initial state, the balls sequentially abut against each other, and the balls close to the push rod abut against the push rod, the ball close to the valve core is propped against the positioning groove; the positioning channel comprises a horizontal section, a vertical section and an inclined section which are sequentially connected from one end close to the movable iron core to the other end, the horizontal position of the inclined section close to one end of the positioning hole is lower than the horizontal position of the other end, and the positioning hole and the central shaft of the inclined section are positioned on the same straight line.

2. The electromagnetic actuating structure for a canister valve as defined in claim 1, wherein a pull rod is connected to an end of said movable iron core away from said push rod, and a safety pin for preventing said pull rod from moving is inserted into said pull rod.

3. The electromagnetic drive structure for a container valve according to claim 1, wherein an end of the plunger remote from the movable core is tapered, and in an initial state, the plunger is inserted into the horizontal section, and each of the balls is distributed over the vertical section, the inclined section, and the positioning hole.

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