A long-distance foam delivery device for fire fighting

Abstract

The invention discloses a long-distance foam delivery device for fire fighting, comprising: a fire truck body, wherein a tank body for storing foam liquid is arranged inside the fire truck body; a bracket, which is rotatably arranged on the fire truck body, and a first discharge pipe connected to the inside of the tank body is arranged on one side wall of the bracket; a second discharge pipe, which is detachably installed on one end of the first discharge pipe, and a liquid outlet for discharging foam liquid outward is arranged on the side wall of the second discharge pipe; the invention is provided with an adjusting screw, a sealing block, a motor and a manual adjustment mechanism, so as to avoid the traditional arrangement of multiple solenoid valves, which is inconvenient to open the liquid outlets in case of damage, and multiple manual valves, which are troublesome and time-consuming to operate. The device can selectively open multiple liquid outlets by one motor, thereby reducing the waste caused by opening multiple outlets at one time, and even if the motor fails, it can still be opened manually, which is convenient to operate, and the number of liquid outlets to be opened can be selected according to actual needs.

Description

Technical Field

[0001] The invention particularly relates to a long-distance foam conveying device for fire fighting. Background Art

[0002] In the existing fire fighting in chemical oil depots, there will be a situation where the water source is far away from the fire. In order to facilitate fire fighting, a conveyor truck carrying foam liquid is used to transport it to the vicinity of the fire, and then the fire is extinguished through multiple external water hoses. However, in order to control the outflow of foam liquid, it is necessary to set solenoid valves or manual valves to correspond to multiple water hoses one by one, so that they can be opened according to actual needs to make the foam liquid flow to the corresponding water hoses. The setting of multiple solenoid valves is prone to malfunction, resulting in some of the water hoses being unable to be opened. Manual operation of multiple solenoid valves to open them is time-consuming and laborious, affecting the efficiency of fire fighting. For this reason, we propose a long-distance foam conveying device for fire fighting. Summary of the invention

[0003] The object of the present invention is to provide a long-distance foam delivery device for fire fighting to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a long-distance foam delivery device for fire fighting, comprising:

[0005] A fire truck body, wherein a tank for storing foam liquid is arranged inside the fire truck body;

[0006] A bracket is rotatably arranged on the fire truck body, and a first discharge pipe connected to the interior of the tank body is arranged on one side wall of the bracket;

[0007] A second discharge pipe is detachably mounted on one end of the first discharge pipe, and a liquid outlet for discharging foam liquid to the outside is provided on a side wall of the second discharge pipe;

[0008] An adjusting screw is rotatably mounted on the middle part of the inner side of the second discharge pipe, and the outer surface of the adjusting screw is connected to a sealing block through a threaded portion, and the sealing block is provided with a guide groove that matches the protrusion on the inner wall of the second discharge pipe;

[0009] The motor is installed at one end of the second discharge pipe through a connecting frame, and the output end of the motor cooperates with the adjusting screw. One end of the bracket is provided with a manual adjusting mechanism for driving the adjusting screw to rotate.

[0010] Preferably, an elastic sealing ring is fixed to one end of the sealing block, and the elastic sealing ring contacts the inner wall of the second discharge pipe, and sealing rings for sealing are equidistantly arranged on the outer surface of the sealing block along its length direction.

[0011] Preferably, the cross section of the elastic sealing ring is trumpet-shaped, and the elastic sealing ring is made of spring steel.

[0012] Preferably, a receiving groove is provided on the side wall of the sealing block, a water retaining pressure block is slidably connected to the inner side of the receiving groove, a spring matching the receiving groove is fixed to one end of the water retaining pressure block, and a reserved cavity is formed between the water retaining pressure block and the receiving groove.

[0013] Preferably, one end of the liquid outlet is provided with a rounded corner, and the edge of the lower surface of the water retaining pressure block is provided with a sealing surface matching the rounded corner.

[0014] Preferably, the water retaining pressure block is provided at two locations, and an arc surface is provided on the upper surface of the water retaining pressure block.

[0015] Preferably, the manual adjustment mechanism includes a rotating rod, a manual handle and a first bevel gear. The rotating rod is rotatably installed on one end of the inner side of the bracket through a bearing, and a first bevel gear is provided at the lower end of the rotating rod. The outer surface of the adjusting screw is provided with a second bevel tooth that matches the first bevel gear, and a manual handle is provided on the rotating rod.

[0016] Preferably, a connecting flange is provided at the other end of the second discharge pipe, and the connecting flange is fixed to the first discharge pipe by bolts.

[0017] Preferably, a manual valve is provided on the first discharge pipe.

[0018] Preferably, at least two liquid outlets are provided, and the two liquid outlets are symmetrically distributed along the second discharge pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention is provided with an adjusting screw, a sealing block, a motor and a manual adjusting mechanism, thereby avoiding the traditional arrangement of multiple solenoid valves, which makes it inconvenient to open the liquid outlet in case of damage, and multiple manual valves, which are troublesome and time-consuming to operate. The device can selectively open multiple liquid outlets through one motor, thus reducing the waste caused by opening multiple outlets at one time, and even if the motor fails, it can still be opened manually, which is convenient to operate and the number of liquid outlets to be opened can be selected according to actual needs, thereby improving the practicability of the device, facilitating the delivery of foam liquid to multiple water hoses for fire fighting, and increasing the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the motor structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the first bevel gear of the present invention;

[0024] Figure 4is a schematic cross-sectional structural diagram of a second discharge pipe of the present invention;

[0025] Figure 5 It is a schematic diagram of the sealing block structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the water retaining pressure block of the present invention;

[0027] Figure 7 It is a schematic diagram of the sealing surface structure of the present invention.

[0028] In the figure: 1, fire truck body; 2, bracket; 3, first discharge pipe; 31, manual valve; 4, second discharge pipe; 41, connecting flange; 5, liquid outlet; 6, motor; 71, rotating rod; 72, manual handle; 73, first bevel gear; 8, adjusting screw; 9, sealing block; 91, elastic sealing ring; 92, sealing ring; 93, water retaining pressure block; 931, sealing surface; 932, arc surface; 94, spring; 95, guide groove; 10, cavity. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: a long-distance foam delivery device for fire fighting, comprising:

[0031] A fire truck body 1, wherein a tank for storing foam liquid is arranged inside the fire truck body 1;

[0032] The bracket 2 is rotatably mounted on the fire truck body 1, and a first discharge pipe 3 communicating with the interior of the tank body is disposed on one side wall of the bracket 2;

[0033] The second discharge pipe 4 is detachably mounted on one end of the first discharge pipe 3, and a liquid outlet 5 for discharging the foam liquid to the outside is provided on the side wall of the second discharge pipe 4;

[0034] The adjusting screw 8 is rotatably mounted on the middle part of the inner side of the second discharge pipe 4, and the outer surface of the adjusting screw 8 is connected with a sealing block 9 through a threaded portion, so as to seal and block the liquid inside the second discharge pipe 4, so as to selectively open the liquid outlet 5 when the foam liquid needs to be discharged outward at a later time, and the sealing block 9 is provided with a guide groove 95 matched with the protrusion on the inner wall of the second discharge pipe 4;

[0035] The motor 6 is installed at one end of the second discharge pipe 4 through a connecting frame, and the output end of the motor 6 cooperates with the adjusting screw 8 to facilitate automatic driving of the adjusting screw 8. A manual adjustment mechanism for driving the adjusting screw 8 to rotate is provided at one end of the bracket 2, so as to facilitate better manual opening of the liquid outlet 5.

[0036] Preferably, an elastic sealing ring 91 is fixed at one end of the sealing block 9, and the elastic sealing ring 91 contacts the inner wall of the second discharge pipe 4 to facilitate the first sealing. The outer surface of the sealing block 9 is equidistantly provided with sealing rings 92 for sealing along its length direction to facilitate the second sealing.

[0037] Preferably, the cross section of the elastic sealing ring 91 is trumpet-shaped, and the elastic sealing ring 91 is made of spring steel, which facilitates better corrosion resistance and better elastic effect.

[0038] Preferably, a receiving groove is provided on the side wall of the sealing block 9, and a water retaining pressure block 93 is slidably connected to the inner side of the receiving groove, so as to better seal the liquid outlet 5 to prevent leakage, and a spring 94 matching the receiving groove is fixed at one end of the water retaining pressure block 93, and a reserved cavity 10 is formed between the water retaining pressure block 93 and the receiving groove, so that when leakage occurs, the pressure of the liquid flowing into the inner side of the cavity 10 can push the water retaining pressure block 93 to better contact with one end of the liquid outlet 5, so as to increase the sealing and waterproof effect.

[0039] Preferably, one end of the liquid outlet 5 is provided with a rounded corner, and the lower surface edge of the water retaining pressure block 93 is provided with a sealing surface 931 matching the rounded corner, so as to provide a better sealing area.

[0040] Preferably, the water retaining block 93 is provided at two locations, and an arc surface 932 is provided on the upper surface of the water retaining block 93 to facilitate the contact area between the liquid and the water retaining block 93, and to make the water retaining block 93 better fit with the inner wall of the cavity 10 in the later stage.

[0041] Preferably, the manual adjustment mechanism includes a rotating rod 71, a manual handle 72 and a first bevel gear 73. The rotating rod 71 is rotatably installed at one end of the inner side of the bracket 2 through a bearing, and a first bevel gear 73 is provided at the lower end of the rotating rod 71. The outer surface of the adjusting screw 8 is provided with a second bevel gear that matches the first bevel gear 73. A manual handle 72 is provided on the rotating rod 71, which is convenient for manually driving the adjusting screw 8 to rotate to drive the sealing block 9 to move.

[0042] Preferably, a connecting flange 41 is provided at the other end of the second discharge pipe 4 , and the connecting flange 41 is fixed to the first discharge pipe 3 by bolts for easy installation.

[0043] Preferably, a manual valve 31 is provided on the first discharge pipe 3 to facilitate controlling the discharge of the liquid inside the first discharge pipe 3 .

[0044] Preferably, at least two liquid outlets 5 are provided, and the two liquid outlets 5 are symmetrically distributed along the second discharge pipe 4 to facilitate liquid discharge.

[0045] The working principle and use process of the present invention are as follows: when in use, the motor 6 is driven by electricity to move, and the output end of the motor 6 drives the adjusting screw 8 to rotate. The adjusting screw 8 and the sealing block 9 are matched through the threaded portion. A sealing rubber is arranged at one end of the sealing block 9 relative to the threaded portion, which can effectively prevent leakage. Then the sealing block 9 is driven to move along the length direction of the second discharge pipe 4, and the guide groove 95 cooperates with the inner wall protrusion of the second discharge pipe 4 to guide the sealing block 9 so that the sealing block 9 and the liquid outlet 5 are staggered. At this time, the high-pressure foam liquid on the inner side of the fire truck body 1 is discharged to the outside through the liquid outlet 5. The adjusting screw 8 can be continuously rotated as needed to open multiple liquid outlets 5. When the motor 6 is damaged, the manual handle 72 can be manually rotated, and the manual handle 72 drives the adjusting screw 8 to rotate through the rotating rod 71. The section screw 8 is rotated, and the operation is convenient. When not in use, the adjusting screw 8 can be rotated in the reversible direction to move the sealing block 9 to one side of the first discharge pipe 3 through the adjusting screw 8, and the elastic sealing ring 91 and the sealing ring 92 are in close contact with the second discharge pipe 4 to improve the sealing effect, and the spring 94 presses the water retaining pressure block 93 to enter the inner side of the liquid outlet 5 to improve the sealing and leak-proof effect. Further, four sealing rings 92 are provided, and every two sealing rings 92 are symmetrical along the water retaining pressure block 93. When two of the sealing rings 92 are damaged, water will flow into the inner side of the cavity 10, and the water flow can better compress the water retaining pressure block 93 and the contact sealing effect with one end of the liquid outlet 5, and the other two good sealing rings 92 can also ensure the sealing and leak-proof effect around the sealing block 9.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-distance foam delivery device for fire fighting, characterized in that: include: A fire truck body (1), wherein a tank for storing foam liquid is arranged inside the fire truck body (1); A bracket (2) is rotatably mounted on the fire truck body (1), and a first discharge pipe (3) connected to the interior of the tank body is disposed on one side wall of the bracket (2); A second discharge pipe (4) is detachably mounted on one end of the first discharge pipe (3), and a liquid outlet (5) for discharging foam liquid outward is provided on a side wall of the second discharge pipe (4); An adjusting screw (8) is rotatably mounted on the middle portion of the inner side of the second discharge pipe (4), and the outer surface of the adjusting screw (8) is connected to a sealing block (9) via a threaded portion, and the sealing block (9) is provided with a guide groove (95) that matches with a protrusion on the inner wall of the second discharge pipe (4); The motor (6) is installed at one end of the second discharge pipe (4) through a connecting frame, and the output end of the motor (6) cooperates with the adjusting screw (8). One end of the bracket (2) is provided with a manual adjustment mechanism for driving the adjusting screw (8) to rotate.

2. A long-distance foam delivery device for fire fighting according to claim 1, characterized in that: An elastic sealing ring (91) is fixed to one end of the sealing block (9), and the elastic sealing ring (91) contacts the inner wall of the second discharge pipe (4). The outer surface of the sealing block (9) is provided with sealing rings (92) equidistantly along its length.

3. A long-distance foam delivery device for fire fighting according to claim 2, characterized in that: The cross section of the elastic sealing ring (91) is trumpet-shaped, and the material of the elastic sealing ring (91) is spring steel.

4. A long-distance foam delivery device for fire fighting according to claim 1, characterized in that: The sealing block (9) has a side wall with a receiving groove, a water retaining pressure block (93) is slidably connected to the inner side of the receiving groove, and a spring (94) matching the receiving groove is fixed to one end of the water retaining pressure block (93), and a reserved cavity (10) is formed between the water retaining pressure block (93) and the receiving groove.

5. A long-distance foam delivery device for fire fighting according to claim 4, characterized in that: One end of the liquid outlet (5) is provided with a rounded corner, and the lower surface edge of the water retaining pressure block (93) is provided with a sealing surface (931) matching the rounded corner.

6. A long-distance foam delivery device for fire fighting according to claim 4, characterized in that: The water retaining pressure block (93) is provided at two locations, and an arc surface (932) is provided on the upper surface of the water retaining pressure block (93).

7. A long-distance foam delivery device for fire fighting according to claim 1, characterized in that: The manual adjustment mechanism comprises a rotating rod (71), a manual handle (72) and a first bevel gear (73); the rotating rod (71) is rotatably mounted on one end of the inner side of the bracket (2) via a bearing, and the first bevel gear (73) is arranged at the lower end of the rotating rod (71); the outer surface of the adjusting screw (8) is provided with a second bevel gear matched with the first bevel gear (73); and the rotating rod (71) is provided with a manual handle (72).

8. A long-distance foam delivery device for fire fighting according to claim 1, characterized in that: The other end of the second discharge pipe (4) is provided with a connecting flange (41), and the connecting flange (41) is fixed to the first discharge pipe (3) by means of bolts.

9. A long-distance foam delivery device for fire fighting according to claim 1, characterized in that: The first discharge pipe (3) is provided with a manual valve (31).

10. A long-distance foam delivery device for fire fighting according to claim 1, characterized in that: At least two liquid outlets (5) are provided, and the two liquid outlets (5) are symmetrically distributed along the second discharge pipe (4).

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