阅读说明：本技术 一种用于压力式泡沫比例混合装置的弹性阻尼器 (Elastic damper for pressure type foam proportion mixing device ) 是由 涂建新 胡强 邓利平 于 2021-09-15 设计创作，主要内容包括：一种用于压力式泡沫比例混合装置的弹性阻尼器,包括定位支架,以及设于定位支架上的支撑导杆,支撑导杆和定位支架之间形成第二过水通道；支撑导杆上设有二级弹性阻挡组件,二级弹性阻挡组件的活动端朝向定位支架延伸并封住第二过水通道；二级弹性阻挡组件的活动端与支撑导杆之间形成第一过水通道,二级弹性阻挡组件的内部嵌设有第一弹性阻挡组件,第一弹性阻挡组件的活动端朝向定位支架延伸并封住第一过水通道,当进水管中的水压逐渐增大时,第一弹性阻挡组件、第二弹性阻挡组件依序被压缩,第一过水通道、第二过水通道依序开启。本发明通过弹性阻尼器,使得泡沫液的注入压力高于比例混合器低压处的水压,从而保证泡沫液的正常供给。(An elastic damper for a pressure type foam proportion mixing device comprises a positioning bracket and a supporting guide rod arranged on the positioning bracket, wherein a second water passing channel is formed between the supporting guide rod and the positioning bracket; a secondary elastic blocking component is arranged on the supporting guide rod, and the movable end of the secondary elastic blocking component extends towards the positioning bracket and seals the second water passing channel; a first water passing channel is formed between the movable end of the second-stage elastic blocking component and the supporting guide rod, the first elastic blocking component is embedded in the second-stage elastic blocking component, the movable end of the first elastic blocking component extends towards the positioning support and seals the first water passing channel, when the water pressure in the water inlet pipe is gradually increased, the first elastic blocking component and the second elastic blocking component are compressed according to the sequence, and the first water passing channel and the second water passing channel are opened according to the sequence. The invention ensures that the injection pressure of the foam liquid is higher than the water pressure at the low pressure of the proportioner through the elastic damper, thereby ensuring the normal supply of the foam liquid.)

1. An elastic damper for a pressure type foam proportional mixing device is characterized in that: the elastic damper is arranged in a water inlet pipe of the pressure type foam proportion mixing device and comprises a positioning bracket arranged in the water inlet pipe and a supporting guide rod arranged on the positioning bracket and extending towards the pressure type foam proportion mixing device, and a second water passing channel is formed between the supporting guide rod and the positioning bracket;

a secondary elastic blocking component is arranged on the supporting guide rod, and the movable end of the secondary elastic blocking component extends towards the positioning bracket and seals the second water passing channel;

the utility model discloses a water pipe, including support guide rod, second grade elasticity block subassembly, first water channel is formed between the support guide rod, second grade elasticity block subassembly's expansion end with support, second grade elasticity blocks the inside of subassembly and inlays and be equipped with first elasticity and block the subassembly, first elasticity blocks the expansion end orientation of subassembly the locating support extends and seals first water channel, and when the water pressure in the inlet tube crescent, first elasticity blocks subassembly, second elasticity and blocks the subassembly according to the preface and be compressed, first water channel, second water channel open according to the preface.

2. The elastic damper for pressure type foam proportioning device of claim 1 wherein the positioning bracket comprises a circular plate bracket installed in the water inlet pipe, and an Contraband type bracket, the Contraband type bracket is located on the side wall of the circular plate bracket far from the direction of the pressure type foam proportioning device, and a second through hole is provided at the middle of the circular plate bracket;

the supporting guide rod is arranged on the Contraband-type bracket, and the second water passing channel is formed among the Contraband-type inner part of the Contraband-type bracket, the outer wall of the supporting guide rod and the second through hole.

3. The elastic damper for a pressure type foam proportioning device of claim 2, wherein the second elastic blocking assembly comprises a second adjusting plate fixedly arranged on the support guide rod, a T-shaped sleeve sleeved on the support guide rod, a second elastic element sleeved on the T-shaped sleeve, one end of the second elastic element is fixed on the second adjusting plate, and the other end of the second elastic element is fixed on the T-shaped end of the T-shaped sleeve;

the T-shaped end of the T-shaped sleeve seals the second water passing channel, and the first elastic blocking component is located inside the T-shaped sleeve.

4. The elastic damper for pressure type foam proportioning device of claim 3, wherein the second adjusting plate is Contraband type structure with Contraband type opening toward the positioning bracket, the second elastic member is caught in the Contraband type opening.

5. The elastic damper for pressure type foam proportioning device of claim 3, wherein a diameter of the T-shaped end of the T-shaped sleeve is larger than a diameter of the second through hole.

6. The elastic damper for pressure type foam proportioning device of claim 3, wherein the T-shaped sleeve comprises a second baffle plate of a ring type structure, and a cylinder welded on the second baffle plate.

7. The elastic damper for a pressure type foam proportioning device of claim 6, wherein a first through hole is provided on a side wall of the cylinder, the first through hole is provided adjacent to the second baffle, and the first water passing passage is formed between the first through hole and the outer wall of the support guide, the second baffle.

8. The elastic damper for a pressure type foam proportioning device of claim 7, wherein the first elastic blocking assembly comprises a first adjusting plate, a first elastic element and a first baffle plate sequentially passing through the support guide rod, the first adjusting plate is fixed at the bottom of the cylinder, one end of the first elastic element is fixed on the first adjusting plate, and the other end of the first elastic element is fixed on the first baffle plate;

the first baffle plate crosses the first through hole and seals a gap between the support guide rod and the second baffle plate, namely the first water passing channel is sealed.

9. The elastic damper for pressure type foam proportioning device of claim 7, wherein a first sealing ring is provided at a junction of the first baffle plate and the support guide rod.

10. The elastic damper for a pressure type foam proportioning device of claim 7, wherein a second sealing ring is provided on an outer edge of the first baffle, the second sealing ring contacting an inner wall of the cylinder.

Technical Field

The invention relates to the technical field of fire extinguishing equipment, in particular to an elastic damper for a pressure type foam proportion mixing device.

Background

At present, the existing pressure type foam proportional mixing device mainly comprises a foam liquid pressure storage tank with a capsule and a PHY type pressure type proportional mixer made by a Venturi principle, and when water in a system pipe network flows through a pressure reducing pore plate of the proportional mixer, a pressure difference is formed in front of and behind the pore plate. And part of water (3 percent or 6 percent) at the high pressure position enters the foam tank through a water inlet pipe of the foam tank, the capsule is extruded, foam liquid in the capsule is extruded to the low pressure position of the proportioning mixer through a liquid outlet pipe of the foam tank to be mixed with water to form foam mixed liquid, and the formed foam mixed liquid is output to foam generating equipment (a medium-low high-multiple foam generator, a foam gun, a foam cannon and the like) to be mixed with air to generate foam for extinguishing. In the existing pressure type foam proportional mixing device, because the injection pressure of foam liquid is not higher than the water pressure at the low pressure part of the proportional mixer, the foam liquid can not be normally supplied sometimes in the process of fire extinguishing, thereby affecting the fire extinguishing effect.

Disclosure of Invention

Based on this, the object of the present invention is to provide an elastic damper for a pressure type foam proportioning device to ensure the normal supply of foam concentrate.

An elastic damper for a pressure type foam proportion mixing device is arranged in a water inlet pipe of the pressure type foam proportion mixing device and comprises a positioning bracket and a supporting guide rod, wherein the positioning bracket is arranged in the water inlet pipe, the supporting guide rod is arranged on the positioning bracket and extends towards the pressure type foam proportion mixing device, and a second water passing channel is formed between the supporting guide rod and the positioning bracket;

a secondary elastic blocking component is arranged on the supporting guide rod, and the movable end of the secondary elastic blocking component extends towards the positioning bracket and seals the second water passing channel;

the utility model discloses a water pipe, including support guide rod, second grade elasticity block subassembly, first water channel is formed between the support guide rod, second grade elasticity block subassembly's expansion end with support, second grade elasticity blocks the inside of subassembly and inlays and be equipped with first elasticity and block the subassembly, first elasticity blocks the expansion end orientation of subassembly the locating support extends and seals first water channel, and when the water pressure in the inlet tube crescent, first elasticity blocks subassembly, second elasticity and blocks the subassembly according to the preface and be compressed, first water channel, second water channel open according to the preface.

Compared with the prior art, the foam liquid injection device ensures that the injection pressure of the foam liquid is higher than the water pressure at the low pressure of the proportioner through the elastic damper, thereby ensuring the normal supply of the foam liquid.

Further, the positioning bracket comprises a circular plate bracket installed in the water inlet pipe and an Contraband-shaped bracket, the Contraband-shaped bracket is positioned on the side wall of the circular plate bracket far away from the pressure type foam proportion mixing device, and a second through hole is formed in the middle of the circular plate bracket;

the supporting guide rod is arranged on the Contraband-type bracket, and the second water passing channel is formed among the Contraband-type inner part of the Contraband-type bracket, the outer wall of the supporting guide rod and the second through hole.

Furthermore, the second elastic blocking assembly comprises a second adjusting plate fixedly arranged on the support guide rod, and a T-shaped sleeve sleeved on the support guide rod, wherein a second elastic element is sleeved on the T-shaped sleeve, one end of the second elastic element is fixed on the second adjusting plate, and the other end of the second elastic element is fixed at a T-shaped end of the T-shaped sleeve;

the T-shaped end of the T-shaped sleeve seals the second water passing channel, and the first elastic blocking component is located inside the T-shaped sleeve.

Further, the second adjusting plate is Contraband-shaped, and Contraband-shaped opening faces the positioning bracket, and the second elastic element is clamped in the Contraband-shaped opening.

Further, the diameter of the T-shaped end of the T-shaped sleeve is larger than that of the second through hole.

Further, T type sleeve includes the second baffle of ring type structure to and weld the drum on the second baffle.

Furthermore, a first through hole is formed in the side wall of the cylinder, the first through hole is arranged close to the second baffle, and a first water passing channel is formed among the second baffle, the outer wall of the supporting guide rod and the first through hole.

Furthermore, the first elastic blocking assembly comprises a first adjusting plate, a first elastic element and a first baffle plate which are sequentially arranged on the supporting guide rod in a penetrating mode, the first adjusting plate is fixed at the bottom of the cylinder, one end of the first elastic element is fixed on the first adjusting plate, and the other end of the first elastic element is fixed on the first baffle plate;

the first baffle plate crosses the first through hole and seals a gap between the support guide rod and the second baffle plate, namely the first water passing channel is sealed.

Furthermore, a first sealing ring is arranged at the joint of the first baffle and the supporting guide rod.

Furthermore, a second sealing ring is arranged on the outer edge of the first baffle plate and is in contact with the inner wall of the cylinder.

Drawings

FIG. 1 is a schematic structural diagram of a pressure type foam proportioning device according to the present invention;

FIG. 2 is a schematic view showing the construction of an elastic damper for the pressure type foam proportioning device of FIG. 1;

FIG. 3 is a schematic structural view of the elastic damper of FIG. 2 with the first elastic blocking element opened (i.e., the flow rate level is below 10L/S);

fig. 4 is a schematic structural view of the elastic damper in fig. 2 when both the first elastic blocking member and the second elastic blocking member are opened (i.e., the flow rate is 10L/S or more).

Description of the main element symbols:

positioning support	10	Circular plate support	101
				Contraband type support	102	Support guide rod	11
Second elastic barrier assembly	12	Second regulating plate	121
				T-shaped sleeve	122	Second elastic element	123
First elastic barrier assembly	13	First adjusting plate	131
				First elastic element	132	First baffle plate	133

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, an elastic damper for a pressure type foam proportion mixing device according to an embodiment of the present invention is installed in a water inlet pipe of the pressure type foam proportion mixing device, and includes a positioning bracket 10 installed in the water inlet pipe, and a supporting guide rod 11 disposed on the positioning bracket 10 and extending toward the pressure type foam proportion mixing device, wherein a second water passage is formed between the supporting guide rod 11 and the positioning bracket 10;

a secondary elastic blocking component 12 is arranged on the support guide rod 11, and the movable end of the secondary elastic blocking component 12 extends towards the positioning bracket 10 and seals the second water passing channel;

the utility model discloses a water pipe, including support guide arm 11, second grade elasticity blocks subassembly 12, second grade elasticity blocks the expansion end of subassembly 12 with form first water channel between support guide arm 11, second grade elasticity blocks the inside of subassembly 12 and inlays and be equipped with first elasticity and blocks subassembly 13, the expansion end orientation that first elasticity blocks subassembly 13 the locating support 10 extends and seals first water channel, when the water pressure in the inlet tube increases gradually, first elasticity blocks subassembly 13, second elasticity and blocks subassembly 12 and is compressed according to the preface, first water channel, second water channel open according to the preface.

It should be noted that, the invention slows down the water inlet speed through the elastic damper, namely reduces the water pressure of the inlet water, so that the injection pressure of the foam concentrate is higher than the water pressure at the low pressure of the proportioner, thereby ensuring the normal supply of the foam concentrate. And in the initial state, namely when no water passes through, the first elastic blocking component and the second elastic blocking component have certain compression amount so as to achieve the sealing effect.

Specifically, when the flow rate is less than 10L/S, the first elastic blocking component 13 is further compressed by the water pressure to open the first water passing channel, and water enters the pressure type foam proportional mixing device through the first water passing channel; when the flow rate is more than 10L/S, the second elastic blocking component 12 is further compressed by the water pressure, the second water passing channel is opened at the moment, namely, the first water passing channel and the second water passing channel are both opened, and water enters the pressure type foam proportional mixing device through the first water passing channel and the second water passing channel.

Referring to fig. 2 to 4, the positioning bracket 10 includes a circular plate bracket 101 installed in the water inlet pipe, and an Contraband-shaped bracket 102, the Contraband-shaped bracket 102 is located on the side wall of the circular plate bracket 101 away from the pressure type foam proportion mixing device, and a second through hole is formed in the middle of the circular plate bracket 101;

the supporting guide rod 11 is arranged on the Contraband-shaped bracket 102, and the second water passing channel is formed between the Contraband-shaped inner part of the Contraband-shaped bracket 102, the outer wall of the supporting guide rod 11 and the second through hole.

In the present invention, the Contraband-shaped holder 102 is provided to enhance the strength of connection between the disk holder 101 and the support guide 11 and to facilitate the passage of water. Specifically, the Contraband-shaped bracket 102 is connected with the circular plate bracket 101 and the support guide rod 11 by welding.

Referring to fig. 2 to 4, the second elastic blocking assembly 12 includes a second adjusting plate 121 fixedly disposed on the support guide rod 11, and a T-shaped sleeve 122 sleeved on the support guide rod 11, wherein a second elastic element 123 is sleeved on the T-shaped sleeve 122, one end of the second elastic element 123 is fixed on the second adjusting plate 121, and the other end is fixed on a T-shaped end of the T-shaped sleeve 122, so as to prevent the second elastic element 123 from deviating;

the T-shaped end of the T-shaped sleeve 122 seals the second water passing channel, and the first elastic blocking component 13 is located inside the T-shaped sleeve 122.

In a preferred embodiment of the present invention, the second adjustment plate 121 has an Contraband-shaped structure, and a Contraband-shaped opening faces the positioning bracket 10, and the second elastic element 123 is blocked in the Contraband-shaped opening, so as to avoid the occurrence of low cost.

In another preferred embodiment of the present invention, the diameter of the T-shaped end of the T-shaped sleeve 122 is larger than the diameter of the second through hole to close the second through hole.

Referring to fig. 2 to 4, the T-shaped sleeve 122 includes a second baffle plate with a circular ring structure and a cylinder welded on the second baffle plate.

Referring to fig. 2 to 4, a first through hole is formed in the side wall of the cylinder, the first through hole is disposed near the second baffle, and the first water passing channel is formed among the second baffle, the outer wall of the support guide rod 11, and the first through hole.

Referring to fig. 2 to 4, the first elastic blocking assembly 13 includes a first adjusting plate 131, a first elastic element 132 and a first baffle 133 sequentially passing through the support guide rod 11, the first adjusting plate 131 is fixed at the bottom of the cylinder, one end of the first elastic element 132 is fixed on the first adjusting plate 131, and the other end is fixed on the first baffle 133, so as to prevent the first elastic element 132 from deviating;

the first baffle 133 passes through the first through hole and seals a gap between the support guide 11 and the second baffle, that is, the first water passing channel.

It should be noted that, in the present invention, the first elastic element 132 and the second elastic element 122 are both springs or elastic sheets. And the outer diameter of the first baffle 133 is greater than the inner diameter of the second baffle to achieve a sealing effect.

In a preferred embodiment of the present invention, a first sealing ring is disposed at a connection position of the first baffle 133 and the support guide 11, and the first sealing ring is used for enhancing a sealing effect.

In another preferred embodiment of the present invention, a second sealing ring is provided on the outer edge of the first barrier 133, and the second sealing ring is in contact with the inner wall of the cylinder, so that the sealing effect is enhanced by the second sealing ring.

It should be further noted that, in the present invention, the foam liquid can be filled by a liquid injection pump or manually, and before filling, the liquid discharge valve, the capsule and the exhaust valve of the tank shell should be opened to discharge the residual liquid in the capsule and the water in the tank shell.

When manual filling is performed:

opening the liquid feeding valve and the water discharging valve in sequence, filling water into the interlayer of the storage tank and the capsule, wherein the water filling amount is 1/4 of the device, the valve is opened slowly during water filling, and the water discharging valve is closed after water filling is finished;

and slowly filling the foam liquid into the tank from the liquid filling port, opening the drain valve to drain the water in the interlayer of the storage tank and the capsule when the foam liquid reaches 3/4, and closing the air outlet valve of the capsule, the air outlet valve of the tank shell, the liquid filling valve and the drain valve when the foam liquid overflows from the air outlet of the capsule.

When filling with the priming pump:

firstly, connecting a liquid outlet pipe of a liquid injection pump with a liquid injection interface of the pump, and inserting the tail end of a liquid suction pipe of the liquid injection pump into the bottom of a foam cylinder;

opening a water drain valve, filling water into an interlayer between the storage tank and the capsule, wherein the water filling amount is 1/4 of the device, slowly opening the valve during water flushing, and closing the water drain valve after water filling is finished;

opening a liquid injection valve of the pump, starting the liquid injection pump, filling foam liquid into the tank, observing a liquid level meter, opening a drain valve to drain water in the interlayer of the storage tank and the capsule when the foam liquid reaches 3/4, and closing the liquid injection pump and then closing all other valves when the foam liquid overflows from the air outlet of the capsule.

In conclusion, the injection pressure of the foam liquid is higher than the water pressure at the low pressure of the proportioning device through the elastic damper, so that the normal supply of the foam liquid is ensured.

In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts in the embodiments are referred to each other. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.