CN2564186Y - A DC switch water gun - Google Patents

Abstract

The utility model relates to a direct current switch water gun, which consists of a gun body [5], a ball valve [7], a ball valve sealing gasket [6], a combining cap [8] and a pipe tooth interface [1], wherein the ball valve sealing gasket [6] is fixed in a groove at the front end of the combining cap [8], the combining cap is fixed in the gun body [5] through screw thread connection, and the ball valve sealing gasket [6] is pressed on the ball valve [7 ]; the pipe thread interface is fixed in the gun body through thread connection; a sealing gasket [4] is arranged between the combined cap [8] and the pipe tooth interface [1] for sealing. Because the ball valve sealing gasket is fixed by the nut, the tightness of the sealing can be freely adjusted. The gun body, the union cap and the pipe thread interface can be sealed by only one sealing gasket, so that the structure is simple, the processing is convenient, the production cost can be greatly reduced, and the assembly is easy.

Description

A DC switch water gun

Technical field

The utility model relates to a fire-fighting tool, in particular to a direct current switch water gun.

Background technique

The current general-purpose DC switch water gun, as shown in Figure 1, consists of a gun body [5], a ball valve [7], a ball valve gasket [6], a transition joint [3], a transition sleeve [2] and a pipe tooth interface [1] The ball valve gasket [6] is fixed in the inner groove of the front end of the transition joint [3], the two ends of the transition joint have external threads, which are respectively connected with the gun body [5] and the pipe tooth interface [1], and the transition sleeve [2] Located in the transition joint [3], one end of the ball valve gasket [6] is pressed against the surface of the ball valve [7], and the other end is pressed against the inner wall of the pipe tooth interface [1]. Between the gun body [5] and the transition joint [3] ], between the transition joint [3] and the pipe tooth interface [1], there are gaskets [4] to seal respectively. The disadvantage of this structure is that the ball valve gasket is supported on the ball valve through the transition sleeve, the tightness of the sealing fit between the ball valve gasket and the ball valve cannot be adjusted freely, and the transition joint is sealed and connected with the gun body and the pipe tooth interface. , high requirements for manufacturing and assembly, and high processing costs.

Contents of the invention

What the utility model needs to solve is that the tightness of the sealing fit between the above-mentioned ball valve gasket and the ball valve cannot be adjusted freely, and there are many sealing surfaces.

A problem with high demands on manufacturing and assembly.

The utility model is realized in this way: the ball valve sealing pad is fixed on the front end of the parallel cap, and the parallel cap is fixed in the gun body through threaded connection and the ball valve sealing pad is pressed on the ball valve; the front end of the pipe tooth interface has an external thread that cooperates with the internal thread of the gun , fixed in the gun body through threaded connection; and there is a gasket seal between the cap and the pipe tooth interface.

In order to improve the sealing effect, there is an inclined surface on the outer wall of the front port of the tube-tooth interface located in the gun body. When the tube-tooth interface rotates forward, the inclined surface squeezes the gasket to generate a forward axial component force and an outward radial force. To component force, the gasket is tightly pressed on the end face of the union cap and the inner wall of the gun, and also gives the union cap a locking force.

Since the sealing pad of the ball valve of the utility model is fixed by the cap, the tightness of the sealing can be adjusted freely. Only one sealing gasket can be used to seal the gun body, the combined cap and the pipe tooth interface, which not only has a simple structure, is convenient to process, can greatly reduce production costs, and is easy to assemble.

Description of drawings

Fig. 1 is a schematic structural diagram of an existing water gun.

Fig. 2 is a structural schematic diagram of the utility model.

In the above figure, 1. pipe tooth interface; 2. transition sleeve; 3. transition joint; 4. gasket; 5. gun body; 6. ball valve gasket; 7. ball valve;

Detailed ways

As shown in Figure 2, the utility model is composed of a gun body [5], a ball valve [7], a ball valve gasket [6], a cap [8] and a pipe tooth interface [1], and the inner wall of the front port of the cap [8] There is a groove on the inclined surface, the ball valve gasket [6] is fixed in the groove at the front end of the cap [8], and the cap is fixed in the gun body [5] through threaded connection, and the ball valve gasket [6] can be rotated forward. Press on the ball valve [7]; the front end of the pipe tooth interface [1] has an external thread that matches the internal thread of the gun body [5], and is fixed in the gun body [5] through threaded connection; and the cap [8] and the pipe tooth Gasket [4] is arranged between interface [1] to seal. There is an outward inclined surface [9] at the front port of the tube-tooth interface [1]. When the tube-tooth interface [1] rotates forward, the inclined surface [9] squeezes the gasket [4] to generate a forward axial split. Force and an outward radial force component, the sealing gasket [4] is tightly pressed on the end face of the combined cap [8] and the inner wall of the gun body [5] to improve the sealing effect and give a locking force to the combined cap at the same time.

Claims (3)

1. A DC switch water gun, including a gun body [5], a ball valve [7], a ball valve gasket [6], and a pipe tooth interface [1], which is characterized in that there is also a parallel cap [8], and a ball valve gasket [ 6] is fixed on the front end of the parallel cap [8], and the parallel cap [8] is fixed in the gun body [5] through threaded connection and presses the ball valve gasket [6] on the ball valve [7]; The front end has an external thread that cooperates with the internal thread of the gun body [5], and is fixed in the gun body [5] through threaded connection; there is a Gasket [4] is sealed. 2. The water gun according to claim 1, characterized in that there is an inclined surface [9] on the outer wall of the front port of the pipe tooth interface [1] located in the gun body [5]. 3. The water gun according to claim 1, characterized in that there is a groove on the slope of the inner wall of the front port of the joint cap [8], and the ball valve gasket [6] is fixed in the groove at the front end of the joint cap [8].

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