CN112138890A - Dual-tube high-pressure jet cleaning and decontamination spray gun for instant mixing of cleaning and decontamination agents - Google Patents

Abstract

The invention relates to a double-tube high-pressure jet cleaning and decontamination spray gun for realizing instant mixing of cleaning and decontamination agents, comprising a double-tube high-pressure cleaning and decontamination spray gun body. Cleaning and decontamination spray gun dual outlet nozzle mixing cover, dual-tube high-pressure cleaning and decontamination spray gun body is provided with synchronous opening and closing pipeline structure. The invention has simple structure and small occupied space; the opening of two pipeline valve cores can be controlled synchronously through a trigger structure, so as to realize the synchronous injection of two solvents, and under the control of the high-pressure pumping system, the specially designed dual With the aid of the mixing hood at the nozzle outlet, the two cleaning and decontamination agents can be mixed according to the desired proportion of the cleaning and decontamination process, and the timeliness and immediacy of the mixing of the two cleaning and decontamination agents can be realized, so that the two kinds of cleaning and decontamination agents can be mixed more efficiently. The effectiveness of cleaning and decontamination agents can improve the efficiency of decontamination and cleaning operations, and improve the convenience of cleaning and decontamination operations.

Description

Dual-tube high-pressure jet cleaning and decontamination spray gun for instant mixing of cleaning and decontamination agents

technical field

The invention belongs to the technical field of high-pressure jet cleaning and decontamination equipment, and relates to a double-tube high-pressure jet cleaning and decontamination spray gun for realizing instant mixing of cleaning and decontamination agents.

Background technique

Cleaning and decontamination operations in extreme environments such as the nuclear industry require high-pressure jet jets to spray decontamination agents onto the surfaces to be decontaminated, so as to achieve efficient decontamination and cleaning operations. With the harsh requirements of cleaning and decontamination in extreme environments such as the nuclear industry and the development of cleaning and decontamination agent chemical technology, in order to achieve more efficient and cleaner cleaning and decontamination, in addition to mixing different functions and components in a certain proportion. In addition to the cleaning agent, it is necessary to ensure the timeliness and immediacy of the mixing of the detergent. The present invention is aimed at the special use requirements of the two new high-efficiency detergents, that is, the two cleaning agents are required to be stored and pumped independently. , only when it is sprayed on the surface to be cleaned and decontaminated can be mixed instantly, the effect of the two cleaning and decontamination agents can be exerted more efficiently. Therefore, a high-pressure jet cleaning and decontamination spray gun with dual channels/dual nozzles is developed to achieve Improve the efficiency of decontamination and cleaning. Under the principle of minimizing nuclear waste, use as little cleaning and decontamination agent as possible to maximize the decontamination area, improve the efficiency of cleaning and decontamination operations in the nuclear chemical industry, and improve the convenience of cleaning and decontamination operations. sex.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a dual-tube high-pressure jet cleaning and decontamination spray gun that realizes instant mixing of cleaning and decontamination agents, which can solve the problem that the existing manual wiping and single-tube spray gun spraying cannot guarantee the mixing effect of the two cleaning and decontamination agents. Problems with technologies such as mixing timeliness.

According to the technical solution provided by the present invention: a double-tube high-pressure jet cleaning and decontamination spray gun for realizing instant mixing of cleaning and decontamination agents, comprising a double-tube high-pressure cleaning and decontamination spray gun body, and the double-tube high-pressure cleaning and decontamination spray gun body passes through the double-tube high-pressure cleaning and decontamination spray gun body. The pipe body of the cleaning and decontamination spray gun is connected to the mixing cover of the double outlet nozzles of the cleaning and decontamination spray gun, and a synchronous opening and closing pipe structure is arranged in the body of the double-tube high-pressure cleaning and decontamination spray gun.

As a further improvement of the present invention, the body of the double-pipe high-pressure cleaning and decontamination spray gun includes a casing, and a synchronous opening and closing pipe structure is arranged in the casing.

As a further improvement of the present invention, the casing includes a casing, and the casing is formed by combining two mirror-symmetric casings.

As a further improvement of the present invention, the synchronous opening and closing pipeline structure includes a first installation base of the valve core and a trigger, a second installation base of the valve core is provided on one side of the first installation base of the valve core, and the valve core is first installed A first upper channel and a first lower channel are opened in the base body, a second upper channel and a second lower channel are opened in the second installation base of the valve core, and one side of the first upper channel is connected to the cleaning and decontamination agent upper pipeline A joint, one side of the first lower channel is connected to a lower pipe joint, a first valve core is arranged between the other side of the first upper channel and one side of the second upper channel, and the other side of the first lower channel A second valve core is arranged between one end of the first valve core and one side of the second lower channel, a liquid inlet is opened on the outer periphery of one end of the first valve core, and a first valve core is provided between one end of the first valve core and the first upper channel. A steel ball, a first valve core return spring is arranged between the other end of the first valve core and the second upper channel, a liquid outlet is opened on the outer periphery of the other end of the second valve core, and the second valve core A second valve core return spring is arranged between one end of the second valve core and the first lower channel, and a second steel ball is arranged between the other end of the second valve core and the second lower channel; the valve core is first installed on the base , The second installation base of the valve core, the first valve core, and the second valve core are provided with a rotating shaft, and the middle part of the trigger is hinged to the body of the double-tube high-pressure cleaning and decontamination spray gun through the rotating shaft , the outer periphery of the middle part of the first valve core is provided with a first shoulder, the outer periphery of the middle part of the second valve core is provided with a second shoulder, the upper part of the trigger is provided with a first stop, and the lower part of the trigger is provided with a second shoulder stop.

As a further improvement of the present invention, the first upper channel is an upper pipe joint section, an upper transition section, and a left section of the first valve core from left to right, and the upper pipe joint section is connected to the cleaning and decontamination agent upper pipe joint , one side of the first valve core is located in the left section of the first valve core, one end of the first valve core is provided with a first steel ball groove, and the first steel ball groove is rolled and installed in the first steel ball groove Steel ball, the second upper channel is the right section of the first valve core and the connecting section of the cleaning and decontamination agent upper pipeline from left to right, and the other side of the first valve core is located in the right section of the first valve core , one end of the first valve core return spring is pressed against the other end of the first valve core, the other end of the first valve core return spring is pressed against the end of the right section of the first valve core, and the cleaning and decontamination agent upper pipeline The connecting section is communicated with the upper pipe of the cleaning and decontamination agent through a compression nut; the first lower channel is a lower pipe joint section, a lower transition section, and a left section of the second valve core from left to right, and the lower pipe joint section Connect the lower pipe joint, one side of the second valve core is located in the left section of the second valve core, one end of the second valve core return spring abuts one end of the second valve core, the second valve core The other end of the return spring is pressed against the end of the left section of the second spool, the second lower passage is the right section of the second spool and the connecting section of the lower pipe from left to right, and the other side of the second spool is located at In the right section of the second valve core, the lower pipe connecting section is connected to the lower pipe of the cleaning and decontamination agent through a compression nut, and the second steel ball is fixed to the other end of the second valve core by screws. .

As a further improvement of the present invention, the other side of the second upper channel is communicated with the upper cleaning and decontamination agent pipeline, and the other side of the second lower channel is communicated with the lower cleaning and decontamination agent pipeline; the diameter of the upper transition section is The diameter of the lower pipe connecting section is smaller than the diameter of the second steel ball, and the auxiliary handle is installed on the body of the double-pipe high-pressure cleaning and decontamination spray gun.

As a further improvement of the present invention, the exterior of the double-pipe cleaning and decontamination spray gun body adopts a symmetrical mirror-arranged spray gun body shell, and the spray gun body shell is provided with a cleaning and decontamination agent upper pipe and a cleaning and decontamination agent lower pipe.

As a further improvement of the present invention, the outlet of the lower pipe for cleaning and removing the decontamination agent in the lower pipe intersects with a certain angle formed by the upper pipe for cleaning and removing the decontamination agent.

As a further improvement of the present invention, the dual-nozzle outlet mixing cover includes a cover, an upper compression pipe thread, a lower compression pipe thread, an upper sealing ring, and a lower sealing ring; the upper compression pipe thread removes the cleaning The upper sewage pipe is installed in the pipe joint of the double nozzle outlet mixing cover, and the upper sealing ring is squeezed by the action of the upper compression pipe thread, and the lower compression pipe thread decontaminates the cleaning and decontamination The agent lower pipe is installed in the pipe joint of the double nozzle outlet mixing cover, and the lower sealing ring is squeezed by the action of the lower compression pipe thread.

As a further improvement of the present invention, O-rings at both ends of the first valve core and the second valve core are respectively installed in the first installation base of the valve core and the second installation base of the valve core.

The positive and progressive effects of this application are:

The invention has simple structure and small occupied space; the opening of two pipeline valve cores can be controlled synchronously through a trigger structure, so as to realize the synchronous injection of two solvents, and under the control of the high-pressure pumping system, the specially designed dual With the aid of the mixing hood at the nozzle outlet, the two cleaning and decontamination agents can be mixed according to the desired proportion of the cleaning and decontamination process, and the timeliness and immediacy of the mixing of the two cleaning and decontamination agents can be realized, so that the two kinds of cleaning and decontamination agents can be mixed more efficiently. The effectiveness of cleaning and decontamination agents can improve the efficiency of decontamination and cleaning operations, and improve the convenience of cleaning and decontamination operations.

Description of drawings

Fig. 1a is the composition of the double-pipe high-pressure jet cleaning and decontamination spray gun system constructed according to the present invention.

Fig. 1b is an axonometric view of the basic composition and outline of a double-tube high-pressure jet cleaning and decontamination spray gun constructed according to the present invention.

Figure 2a is a cross-sectional view of the basic components of a dual-tube high-pressure jet cleaning and decontamination spray gun constructed in accordance with the present invention.

Fig. 2b is an enlarged cross-sectional view of part A of Fig. 2a.

Fig. 2c is an enlarged cross-sectional view of part B of Fig. 2a.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present patent will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments made by persons of ordinary skill in the art before creative work is performed shall fall within the protection scope of the present invention.

Please refer to Figure 1a, Figure 1b, Figure 2a, Figure 2b and Figure 2c, the present invention provides a technical solution, a dual-tube high-pressure jet cleaning and decontamination field for nuclear chemical cleaning and decontamination that realizes instant mixing of detergents The sewage spray gun is composed of a double-tube high-pressure jet cleaning and decontamination spray gun 1, an external high-pressure pump and a pipeline system 2, wherein the double-tube high-pressure jet cleaning and decontamination spray gun 1 includes a double-tube high-pressure cleaning and decontamination spray gun body 1-1. Sewage spray gun body 1-2 and dual nozzle outlet mixing cover 1-3.

Specific embodiment 1, the described double-tube high-pressure jet cleaning and decontamination spray gun system, the two pipe interfaces on the double-tube high-pressure jet cleaning and decontamination spray gun are connected to the high-pressure pumping system corresponding to the cleaning and decontamination agent respectively through the double pipes (not shown) connection to enable independent pumping of two decontamination agents that need to be mixed at the instant of cleaning to be effective, and to achieve two decontamination agents through the trigger on the double-barreled high-pressure jet cleaning decontamination spray gun The synchronous injection of the cleaning and decontamination spray gun enters the mixing hood of the dual-outlet nozzle of the cleaning and decontamination spray gun, and realizes the efficient mixing of the two decontamination agents at the same time to meet the specific cleaning and decontamination process requirements. In addition, through the control of the high-pressure pumping system, the flow control of each cleaning and decontamination agent can be realized, so that the mixing ratio control of the two cleaning and decontamination agents can be indirectly realized according to the requirements of the cleaning and decontamination process.

Embodiment 2, the double-tube high-pressure jet cleaning and decontamination spray gun includes a double-tube high-pressure cleaning and decontamination spray gun body 1-1, a double-tube cleaning and decontamination spray gun body 1-2 and a dual-nozzle outlet mixing cover 1-3. . The double-tube high-pressure cleaning and decontamination spray gun body 1-1 is connected to the double-tube high-pressure jet cleaning and decontamination spray gun through the connection between the double-tube cleaning and decontamination spray gun body 1-2 and the dual-outlet nozzle mixing cover 1-3 of the cleaning and decontamination spray gun.

Specific embodiment three, the double-tube high-pressure cleaning and decontamination spray gun body 1-1 of the double-tube high-pressure jet cleaning and decontamination spray gun is composed as follows: the upper pipe joint 1-1-1 of the cleaning and decontamination agent and the The lower pipe joints 1-1-12 are connected to the corresponding threaded holes on the first installation base 1-1-2 of the valve core through pipe threads, and the two ends of the first valve core 1-1-5 are respectively two O-shaped The sealing rings 1-1-4 and 1-1-6 are installed in the corresponding pipes of the first installation base 1-1-2 of the valve core and the second installation base 1-1-9 of the valve core, and the first valve core 1-1 One end of -5 is in contact with the first steel ball 1-1-3, the other end is in contact with the first spool return spring 1-1-7, and the output end of the pipeline corresponding to the first spool 1-1-5 is compressed through the nut 1-1-10 is connected with the upper pipe 1-2-1 of the cleaning and decontamination agent; the first valve core 1-1-5 is in contact with the trigger 1-1-15 through the shoulder at its middle position, so that it can pass through as shown in Figure 2b Pull to the bottom of trigger 1-1-15 in the direction shown by the arrow, the trigger 1-1-15 is clockwise around the rotation axis 1-1-21, and the first stop on the upper part of the trigger 1-1-15 moves to the right to push the first stop. A shaft shoulder moves the first valve core 1-1-5 to the right, so that the first steel ball 1-1-3 is pushed away from the pipe opening under the pressure of the high-pressure cleaning detergent itself, so that the pipe can be opened and the high-pressure cleaning can be achieved. The detergent can enter the central hole of the first valve core 1-1-5 through the circumferential liquid inlet hole of the left end of the first valve core 1-1-5, thereby entering the cleaning and detergent upper pipeline 1-2- 1 inside. In addition, the installation method of the second valve core 1-1-16 is the same as that of the first valve core 1-1-5, and two O-rings 1-1-14 and 1-1-17 are installed on the second valve core. One end of the second valve core 1-1-16 is in contact with the second steel ball 1-1-18, and the other end In contact with the second valve core return spring 1-1-13, the output end of the pipeline corresponding to the first valve core 1-1-5 is connected to the lower pipeline cleaning and decontamination agent lower pipeline 1-2- through the compression nut 1-1-20. 2 connection; the second spool 1-1-16 is also in contact with the trigger 1-1-15 through the shaft shoulder in the middle position, and the trigger 1-1-15 can also be pulled in the direction shown by the arrow in Figure 2b. The trigger 1-1-15 is clockwise around the shaft 1-1-21, the second stop located at the lower part of the trigger 1-1-15 moves to the left and pushes the second shoulder to make the second spool 1-1-16 move to the left , so that the second steel ball 1-1-18 that will be fixedly connected to the second valve core 1-1-16 (the second steel ball 1-1-18 is fixed on the right end of the second valve core 1-1-16 by screws The top) is pushed away from the pipe port to realize the pipe opening, and the high-pressure cleaning detergent can pass through the central hole of the second valve core 1-1-16 and enter through the circumferential through hole of the right end of the second valve core 1-1-16 , so as to enter the lower pipeline 1-2-2 of the lower pipeline cleaning and decontamination agent. The installation directions of the first valve core 1-1-5 and the second valve core 1-1-16 are opposite, so that the same trigger can be used to realize the opening and closing of the two valve cores synchronously. The first installation base 1-1-2 of the valve core and the second installation base 1-1-9 of the valve core are fixed in the casing 1-1-19 of the double-pipe high-pressure cleaning and decontamination spray gun through threads, and the casing 1-1-19 is Two mirror-symmetrical structures, the mounting base 1-1-2 and the second mounting base 1-1-9 of the valve core are installed in the middle of the housing by using the clip positioning guide feature and screw connection, while the trigger 1-1- The rotating shaft 1-1-21 of 15 is installed on the corresponding position of the casing through the corresponding holes on the casings 1-1-19 on both sides. The trigger 1-1-15 is installed on the rotating shaft 1-1-21 through the through hole on the main body, and the first valve core 1-1-5 and the second valve core 1-1-16 respectively pass through the upper and lower waist type on the trigger. Through hole, the shaft shoulders on it are in contact with the left and right stops of the trigger 1-1-15, so that when the trigger is pulled in the direction of the arrow as shown in Figure 2b, the first valve core 1-1-1-15 can be realized. 5 and the second spool 1-1-16 move to the left and right, respectively, thereby opening the respective pipes. Finally, the end housing 1-1-11 is fixed to the right end of the double-tube high-pressure cleaning and decontamination spray gun body 1-1 by means of screw connection through the positioning stop.

Auxiliary handles 1-1-22 are mounted on the outside of the housing assembly, thereby assisting the handles on the housing and facilitating the operator to operate the high-pressure jet cleaning and decontamination spray gun.

Specific Embodiment 4, the described double-tube high-pressure jet cleaning and decontamination spray gun has a double-tube cleaning and decontamination spray gun body 1-2. It is characterized in that it consists of an upper pipe 1-2-1 for cleaning and decontamination agent and a lower pipe 1-2-2 for cleaning and decontamination agent. The outlet of the lower pipe 1-2-2 of the cleaning agent intersects with a certain angle formed by the upper pipe 1-2-1 of the cleaning and decontamination agent. Stain remover. In addition, in order to ensure the airtightness of the double-tube high-pressure jet cleaning and decontamination spray gun and its easy cleaning and decontamination performance, the exterior of the double-tube cleaning and decontamination spray gun body 1-2 also adopts a symmetrical mirror-arranged spray gun body shell 1-2- 3. Realize the overall coating of the pipeline, and realize the whole together with the end shell 1-1-11 of the double-tube high-pressure cleaning and decontamination spray gun body 1-1 and the cover shell 1-3-3 of the double nozzle outlet mixing cover 1-3. The sealing and airtightness of the double-tube high-pressure jet cleaning and decontamination spray gun, and the smoothness of the entire surface of the entire double-tube high-pressure jet cleaning and decontamination spray gun is convenient for overall decontamination and cleaning.

Embodiment 5. The described double-pipe high-pressure jet cleaning and decontamination spray gun has a dual-nozzle outlet mixing cover 1-3. It is characterized in that the double nozzle outlet mixing cover 1-3 includes a cover shell 1-3-3, an upper compression pipe thread 1-3-1, a lower compression pipe thread 1-3-4, and an upper sealing ring 1-3. -2 and the lower sealing ring 1-3-5. Among them, the upper compression pipe thread 1-3-1 installs the cleaning and decontamination agent upper pipe 1-2-1 in the pipe joint of the double nozzle outlet mixing cover 1-3, and the upper compression pipe thread 1-3- 1. Squeeze the upper sealing ring 1-3-2 to realize the sealing between the upper pipe 1-2-1 and the cover 1-3-3 of the sealing cleaning detergent, and also press down the pipe thread 1-3-4. It mainly realizes the fastening connection between the lower pipeline 1-2-2 and the casing 1-3, and the seal between them is compressed by lowering the lower sealing ring by pressing down the pipe thread 1-3-4. 1-3-5 to achieve sealing.

Claims (10)

1. A double-pipe high-pressure jet cleaning and decontaminating spray gun for realizing instant mixing of cleaning decontaminants is characterized in that: the spray gun comprises a double-pipe high-pressure cleaning and decontaminating spray gun body (1-1), the double-pipe high-pressure cleaning and decontaminating spray gun body (1-1) is connected with a cleaning and decontaminating spray gun double-outlet nozzle mixing cover (1-3) through a double-pipe cleaning and decontaminating spray gun pipe body (1-2), and a synchronous opening and closing pipeline structure is arranged in the double-pipe high-pressure cleaning and decontaminating spray gun body (1-1).

2. The dual tube high pressure jet cleaning and decontamination lance of claim 1 for achieving instant mixing of cleaning decontaminant wherein: the double-pipe high-pressure cleaning decontamination spray gun body (1-1) comprises a shell, wherein a synchronous opening and closing pipeline structure is arranged in the shell.

3. The dual tube high pressure jet cleaning and decontamination lance of claim 2 for achieving instant mixing of cleaning decontaminant, wherein: the shell comprises shells (1-1-19), and the shell is formed by combining two mirror-symmetrical shells (1-1-19).

4. The dual tube high pressure jet cleaning and decontamination lance of claim 1 for achieving instant mixing of cleaning decontaminant wherein: the synchronous opening and closing pipeline structure comprises a first valve core installation base body (1-1-2) and a trigger (1-1-15), a second valve core installation base body (1-1-9) is arranged on one side of the first valve core installation base body (1-1-2), a first upper channel and a first lower channel are formed in the first valve core installation base body (1-1-2), a second upper channel and a second lower channel are formed in the second valve core installation base body (1-1-9), one side of the first upper channel is communicated with an upper pipeline joint (1-1-1) for cleaning detergent, one side of the first lower channel is communicated with a lower pipeline joint (1-1-12), and a first valve core (1-1-5) is arranged between the other side of the first upper channel and one side of the second upper channel, a second valve core (1-1-16) is arranged between the other side of the first lower channel and one side of the second lower channel, a liquid inlet is formed in the periphery of one end of the first valve core (1-1-5), a first steel ball (1-1-3) is arranged between one end of the first valve core (1-1-5) and the first upper channel, a first valve core reset spring (1-1-7) is arranged between the other end of the first valve core (1-1-5) and the second upper channel, a liquid outlet is formed in the periphery of the other end of the second valve core (1-1-16), a second valve core reset spring (1-1-13) is arranged between one end of the second valve core (1-1-16) and the first lower channel, and a second steel ball (1-1-18) is arranged between the other end of the second valve core (1-1-16) and the second lower channel ) (ii) a A rotating shaft (1-1-21) is arranged among the first valve core mounting base body (1-1-2), the second valve core mounting base body (1-1-9), the first valve core (1-1-5) and the second valve core (1-1-16), the middle part of the trigger (1-1-15) is hinged in the double-pipe high-pressure cleaning decontamination spray gun body (1-1) through the rotating shaft (1-1-21), a first shaft shoulder is arranged on the periphery of the middle part of the first valve core (1-1-5), a second shaft shoulder is arranged on the periphery of the middle part of the second valve core (1-1-16), the upper part of the trigger (1-1-15) is provided with a first baffle table, and the lower part of the trigger (1-1-15) is provided with a second baffle table.

5. The dual tube high pressure jet cleaning and decontamination lance of claim 4 for achieving instant mixing of cleaning decontaminant wherein: the first upper channel comprises an upper pipe joint section, an upper transition section and a first valve core left section from left to right, the upper pipe joint section is connected with the detergent upper pipe joint (1-1-1), one side of the first valve core (1-1-5) is positioned in the first valve core left section, one end of the first valve core (1-1-5) is provided with a first steel ball groove, the first steel ball (1-1-3) is arranged in the first steel ball groove in a rolling manner, the second upper channel comprises a first valve core right section and a detergent upper pipe connecting section from left to right, the other side of the first valve core (1-1-5) is positioned in the first valve core right section, one end of a first valve core reset spring (1-1-7) is propped against the other end of the first valve core (1-1-5), the other end of the first valve core return spring (1-1-7) props against the end part of the right section of the first valve core, and the upper pipeline connecting section of the cleaning and decontaminating agent is communicated with the upper pipeline (1-2-1) of the cleaning and decontaminating agent through a compression nut (1-1-10); the first lower channel is a lower pipe joint section, a lower transition section and a second valve core left section from left to right, the lower pipe joint section is connected with the lower pipeline joint (1-1-12), one side part of the second valve core (1-1-16) is positioned in the second valve core left section, one end of a second valve core reset spring (1-1-13) props against one end part of the second valve core (1-1-16), the other end of the second valve core reset spring (1-1-13) props against the end part of the second valve core left section, the second lower channel is a second valve core right section and a lower pipeline connecting section from left to right, the other side part of the second valve core (1-1-16) is positioned in the second valve core right section, and the lower pipeline connecting section is connected with the cleaning detergent lower pipeline (1-2-2) through a compression nut (1-1-20), the second steel ball (1-1-18) is fixed at the other end of the second valve core (1-1-16) through a screw.

6. The dual tube high pressure jet cleaning and decontamination lance of claim 5 for achieving instant mixing of cleaning decontaminant wherein: the other side of the second upper channel is communicated with an upper cleaning and decontaminating agent pipeline (1-2-1), and the other side of the second lower channel is communicated with a lower cleaning and decontaminating agent pipeline (1-2-2); the diameter of the upper transition section is smaller than that of the first steel ball (1-1-3), the diameter of the lower pipeline connecting section is smaller than that of the second steel ball (1-1-18), and an auxiliary handle (1-1-22) is mounted on the double-pipe high-pressure cleaning decontamination spray gun body (1-1).

7. The dual tube high pressure jet cleaning and decontamination lance of claim 4 for achieving instant mixing of cleaning decontaminant wherein: the outside of a double-pipe cleaning and decontaminating spray gun pipe body (1-2-3) adopts a spray gun pipe body shell (1-2-3) which is symmetrically arranged in a mirror image mode, and an upper pipeline (1-2-1) and a lower pipeline (1-2-2) of a cleaning decontaminant are arranged in the spray gun pipe body shell (1-2-3).

8. The dual tube high pressure jet cleaning and decontamination lance of claim 7 for achieving instant mixing of cleaning decontaminant wherein: the outlet of the lower pipeline cleaning and decontaminating agent lower pipeline (1-2-2) is crossed with a certain angle formed by the upper pipeline cleaning and decontaminating agent upper pipeline (1-2-1).

9. The dual tube high pressure jet cleaning and decontamination lance of claim 7 for achieving instant mixing of cleaning decontaminant wherein: the double-nozzle outlet mixing cover (1-3) comprises a cover shell (1-3-3), an upper pressing pipe thread (1-3-1), a lower pressing pipe thread (1-3-4), an upper sealing ring (1-3-2) and a lower sealing ring (1-3-5); the upper pressing pipe thread (1-3-1) is used for installing the cleaning agent upper pipeline (1-2-1) in the pipe joint of the double-nozzle outlet mixing cover (1-3) and pressing the upper sealing ring (1-3-2) through the action of the upper pressing pipe thread (1-3-1), and the lower pressing pipe thread (1-3-4) is used for installing the cleaning agent lower pipeline (1-2-2) in the pipe joint of the double-nozzle outlet mixing cover (1-3) and pressing the lower sealing ring (1-3-5) through the action of the lower pressing pipe thread (1-3-4).

10. The dual tube high pressure jet cleaning and decontamination lance of claim 4 for achieving instant mixing of cleaning decontaminant wherein: two ends of the first valve core (1-1-5) and the second valve core (1-1-16) are respectively provided with an O-shaped sealing ring and are arranged in the first valve core mounting base body (1-1-2) and the second valve core mounting base body (1-1-9).

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