CN214682350U - Intermittent quantitative high-viscosity biological preparation spraying gun - Google Patents

Abstract

The utility model discloses an intermittent quantitative high-viscosity biological agent spraying gun, which comprises a gun body, a trigger and a gun barrel sleeve, wherein the gun body is in a gun shell shape; the top end of the gun barrel sleeve is provided with a gas-liquid two-fluid spray head, the gun barrel sleeve is provided with a propelling container, and a propelling output pipe head at the top end of the propelling container is communicated with a liquid inlet of the gas-liquid two-fluid spray head; the tail end of the propelling container is connected with a distance push rod assembly, and the distance push rod assembly is connected with the power transmission connecting rod and moves back and forth in the barrel sleeve along with a trigger; the gas gun is characterized in that an air inlet device is arranged at the bottom of the gun handle, the bottom of the air inlet device is connected with an external compressed gas pipe, and the air inlet device is provided with an air pipe which is connected with a gas inlet of a gas-liquid two-fluid spray head through a gun pipe sleeve. The utility model discloses a main part of the spraying gun body can be repeatedly used, only needs to change reagent storage jar and sap cavity pipeline and can reuse, convenient and fast, apparatus high-usage.

Description

Intermittent quantitative high-viscosity biological preparation spraying gun

Technical Field

The utility model relates to a spraying device technical field, concretely relates to intermittent type ration high viscosity biological agent spray gun.

Background

The skin is the largest organ of the human body, and is one of the tissues with the fastest self-renewal speed, which is the first defense line for the body from dehydration, injury and infection, and is the barrier for maintaining homeostasis and preventing invasion of microorganisms, chemical substances and the like.

It is very important to repair the wound surface as early as possible and recover the barrier function of the skin. Biological reagents such as skin repair liquid, granulocyte suspension, cell suspension and the like are commonly used in the treatment of skin wound repair, so that the use of the reagents is reduced, the operation is simplified and the like for ensuring more effective improvement of the utilization rate of the biological reagents. The method of spraying the atomized biological reagent on the wound surface is commonly used.

While the viscosity of some biological reagents (such as cell suspension and the like) is very high (up to 100-200 cP), and the biological reagents are usually stored in a relatively sealed reagent container to prevent pollution, so that the required extrusion force of the biological reagents is very large. At this time, if the traditional natural siphon type gas-liquid two-fluid spraying device is still used for spraying, the biological reagent is likely to be incapable of being sprayed or the shearing force of the biological reagent at the top end of the nozzle is too large, so that the biological reagent is ineffective under the condition of too large local shearing force.

Disclosure of Invention

The utility model discloses need too high atmospheric pressure to current high viscosity biological agent when the spraying to make the shearing force too big problem that leads to some biological agent inefficacy, provide an intermittent type ration high viscosity biological agent spray gun, this spray gun need use too high atmospheric pressure's problem when can avoiding the spraying of high viscosity biological agent to solve the too big biological agent inefficacy that leads to of spraying shearing force.

In order to realize the aim, the utility model designs an intermittent quantitative high-viscosity biological agent spraying gun, which comprises a gun body, a trigger and a gun barrel sleeve, wherein the gun body is in a gun shell shape; the top end of the gun barrel sleeve is provided with a gas-liquid two-fluid spray head, the gun barrel sleeve is provided with a propelling container, and a propelling output pipe head at the top end of the propelling container is communicated with a liquid inlet of the gas-liquid two-fluid spray head; the tail end of the propelling container is connected with a distance push rod assembly, and the distance push rod assembly is connected with the power transmission connecting rod and moves back and forth in the barrel sleeve along with a trigger;

the gas gun is characterized in that an air inlet device is arranged at the bottom of the gun handle, the bottom of the air inlet device is connected with an external compressed gas pipe, and the air inlet device is provided with an air pipe which is connected with a gas inlet of a gas-liquid two-fluid spray head through a gun pipe sleeve.

Further, the propelling container is arranged inside the gun barrel sleeve; the distance push rod assembly comprises a distance push rod, the distance push rod is L-shaped and consists of a push rod and a fixed rod; the push rod is arranged on one side of the propelling container, the fixing rod is connected with the tail end of the propelling container, the tail end of the fixing rod is connected with the backspacing linear spring, and the backspacing linear spring is arranged on the spring rod.

Furthermore, the gun barrel sleeve is L-shaped, when the gun barrel sleeve and the gas-liquid two-fluid spray head are installed, an installation groove is formed in the outer walls of the gun barrel sleeve and the gas-liquid two-fluid spray head, the propelling container is arranged on the installation groove, and a sliding groove is formed in the side wall of the gun barrel sleeve;

the distance push rod assembly comprises a distance push rod, the distance push rod is L-shaped and consists of a push rod and a fixed rod; the push rod is arranged on one side of the propelling container, the fixed rod is connected with the tail end of the propelling container and slides back and forth in the sliding groove, the tail end of the fixed rod is connected with the backspacing linear spring, and the backspacing linear spring is arranged on the spring rod at the tail end of the gun body.

Furthermore, the side surface of the push rod is a ratchet surface, and a ratchet fixing elastic sheet and a ratchet pushing elastic sheet are correspondingly arranged on the ratchet surface; the ratchet fixing elastic sheet is fixed on the inner side wall of the barrel sleeve, and the tail end of the ratchet pushing elastic sheet is connected with the power transmission connecting rod.

Furthermore, a backspacing groove is formed in the top surface of the gun barrel sleeve, a distance push rod backspacing handle is arranged on the backspacing groove, and the other end of a spring of the distance push rod backspacing handle is fixed on a handle spring post; the ejector pin on the distance push rod backspacing handle is tightly attached to the ratchet fixing elastic sheet and the ratchet pushing elastic sheet, and when the backspacing handle is pushed, the ratchet fixing elastic sheet and the ratchet pushing elastic sheet can be jacked open to enable the ratchet fixing elastic sheet and the ratchet pushing elastic sheet to be separated from the ratchet on the distance push rod.

Still further, the propelling movement container includes reagent container and the pushing ram that reciprocates in the reagent container, the reagent container top is provided with impels the output tube head.

Still further, the air inlet unit includes the admission valve, the admission valve bottom is provided with the external gas entry, the admission valve side is connected with the trachea, the trachea is connected to the gas outlet and the gas inlet connection of body of a gun, the admission valve top surface is provided with the pneumatic valve lever, pneumatic valve lever top is connected with the trigger.

Furthermore, the top and the bottom of the gas-liquid two-fluid spray head are respectively provided with a fixing buckle claw and a spray head locking buckle, and the top surface and the bottom surface of the gun barrel sleeve are provided with a fixing clamping groove and a fixing clamping opening groove; the fixing buckle grab and the spray head locking buckle are respectively inserted into the fixing clamping groove and the fixing clamping opening groove.

Still further, the shower nozzle locking is detained including fixing the locking seat in gas-liquid two fluid shower nozzle bottom surface and being connected with locking connecting rod and locking buckle head through the pivot.

And furthermore, a positioning pin is arranged on the connecting surface of the gas-liquid two-fluid spray nozzle and the gun pipe sleeve.

The utility model discloses a working process:

the intermittent quantitative high-viscosity biological preparation spraying gun mixes and sprays high-pressure compressed gas and biological reagents (including but not limited to a dermatome suspension, a cell solution, a repair reagent and the like) through a gas-liquid two-fluid nozzle of the spraying gun to form fine liquid drops to form mist-shaped jet flow, and the mist spray acts on the skin wound surface for treatment.

In order to ensure that the viscous biological reagent can still be uniformly sprayed out under the action of compressed gas with relatively low (0.4-0.5bar) air pressure, the spraying gun can quantitatively inject the viscous biological reagent into a fluid cavity in a gas-liquid two-fluid spray head by using a combined mode of a propelling container and a fixed-distance moving push rod under the condition that the biological reagent is isolated from the outside, wherein the fixed-distance moving push rod is provided with a ratchet, a gun trigger is connected with an elastic piece through a power transmission connecting rod and a ratchet pushing piece, and is connected with an air inlet valve; the specific working process is as follows:

when a gun trigger is pressed down, an air valve control rod connected with the trigger pushes a starting rod of an air inlet valve, the air inlet valve is opened, and compressed air enters an air cavity of the gas-liquid two-fluid spray head through an air flow channel; the further gun trigger drives the ratchet to push the elastic sheet to move through the power transmission connecting rod, the ratchet pushes the elastic sheet to push the fixed-distance moving push rod at a certain distance, so that the push rod enables the biological reagent to be injected into a fluid cavity of the gas-liquid two-fluid spray head from the reagent container, and at the moment, the compressed gas and the biological reagent form spray under the action of the gas-liquid two-fluid spray head.

Thus, the distance-moving push rod allows only a fixed amount of the biological reagent to be pushed from the reagent container into the gas-liquid two-fluid ejection head, so that the spray obtained each time the gun trigger is pressed is fixed. Therefore, the loss of the biological reagent caused by operation errors can be reduced in the actual use process.

After the biological reagent forms spray to act on a patient, the trigger is loosened, the trigger automatically returns to the initial position under the action of the trigger spring, the air valve control rod returns, the air valve is in a closed state, and compressed air cannot enter the two-fluid spray head.

Wherein, reagent container, gas-liquid two-fluid shower nozzle are disposable part, can independently dismantle, can make spray gun itself used repeatedly, can reuse after changing disposable part.

The principle of the invention is as follows:

the invention uses an extrudable closed liquid container, and when spraying, the closed container is extruded while air flow forms negative pressure at the top end of a nozzle to extract biological reagents, so that the biological reagents are actively injected into a two-fluid spray head according to set metering. This reduces the pressure at which good spray results are achieved. The pressure of compressed air needed by a common traditional natural siphon spray gun for the reagent with the experimental biological reagent viscosity of about 100cP is at least 0.7-0.8 bar, and the same spraying effect can be achieved only by air pressure of about 0.4-0.5bar when the intermittent quantitative high-viscosity biological reagent spray gun is used for spraying the reagent with the same viscosity. The main action principle is as follows:

the spraying gun uses a gas-liquid two-fluid type spray head as a component for atomizing a biological reagent, an air inlet valve is arranged in an air path for introducing compressed gas into the gas-liquid two-fluid type spray head, and a distance moving push rod device of a power transmission connecting rod is arranged on a container of the biological reagent. Wherein the distance moving push rod of the air inlet valve and the power transmission connecting rod is connected with a trigger device of the spray gun.

When the trigger of the spray gun is pressed: the air inlet valve is opened, and compressed air enters the air path of the gas-liquid two-fluid type spray head; further, the distance moving push rod device of the power transmission connecting rod pushes the container of the biological reagent, so that the biological reagent enters a liquid path of the gas-liquid two-fluid type spray head. Under the action of the two-fluid atomization spray head, spray is formed. The spray can be applied on the wound surface to achieve the purpose of treatment.

When a traditional natural siphon spray gun is used for acting the biological reagent with high viscosity, the compressed gas with high pressure needs to form enough negative pressure at the top end of the spray nozzle so as to enable the biological reagent with high viscosity to be sucked out, and the compressed gas with high pressure inevitably forms higher shearing force when acting with liquid, so that the biological reagent is possibly disabled. And the pressure of compressed gas required by uniform spraying can be effectively reduced when the biological reagent is actively pushed into the two-fluid spray head, so that the shearing force of the biological reagent in the process of forming the spray is reduced.

The utility model has the advantages that:

1) the main body part of the spraying gun can be repeatedly used, and can be reused only by replacing the reagent storage tank and the liquid cavity pipeline, thereby being convenient and quick and having high utilization rate of instruments;

2) the spraying gun of the utility model can effectively utilize biological reagents, and only a small amount of biological reagents can not be atomized;

3) the spraying gun of the utility model can intermittently and quantitatively convert biological reagents into spray, thus reducing reagent waste caused by operation reasons;

4) the utility model discloses a spraying gun easily processes, and is easy and simple to handle.

Drawings

FIG. 1 is a perspective view of an intermittent metered high viscosity biological agent spray gun as shown in example 1;

FIG. 2 is a rear view of an intermittent dosing high viscosity biological agent spray gun;

FIG. 3 is a schematic view of a gun body and a gun sleeve of the spray coating gun;

FIG. 4 is an internal structural view of the coating gun;

FIG. 5 is an exploded interior view of the spray coating gun;

FIG. 6 is a detail view of the spray coating gun;

FIG. 7 is an enlarged view of FIG. 6;

FIG. 8 is a perspective view of the intermittent metered high viscosity biological agent spray gun of example 2;

FIG. 9 is a view showing the internal structure of a coating gun according to embodiment 2;

in the figure, a gun body 1, a gun handle 1.1, a spring rod 1.2, a trigger 2, a gun barrel sleeve 3, a sliding groove 3.1, a backspacing groove 3.2, a gripping spring column 3.3, a fixed clamping groove 3.4, a fixed clamping groove 3.5, an air outlet 3.6, a gas-liquid two-fluid spray nozzle 4, a liquid inlet 4.1, a gas inlet 4.2, a fixed buckle 4.3, a spray nozzle locking buckle 4.4, a locking seat 4.41, a rotating shaft 4.42, a locking connecting rod 4.43, a locking buckle head 4.44, a positioning pin 4.5, a propelling container 5, a reagent container 5.1, a propelling output tube head 5.11, a propelling rod 5.2, a distance-fixing linear spring 6.2, a ratchet fixing elastic sheet 6.3, a ratchet pushing elastic sheet 6.4, a distance-fixing push rod backspacing hand buckle 6.5, a power transmission connecting rod 7, an air inlet device 8, an air pipe 8.1, a fixed rod 6.2, a gas inlet valve 8.2, an air inlet valve control mounting groove 9.3 and an air inlet control valve.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments for the understanding of those skilled in the art.

Example 1

The intermittent quantitative high-viscosity biological agent spraying gun comprises a gun body 1, a trigger 2 and a gun barrel sleeve 3, wherein the gun body 1 is in a gun shell shape; a gas-liquid two-fluid nozzle 4 is arranged at the top end of the gun barrel sleeve 3, and a positioning pin 4.5 is arranged on the connecting surface of the gas-liquid two-fluid nozzle 4 and the gun barrel sleeve 3;

the top and the bottom of the gas-liquid two-fluid sprayer 4 are respectively provided with a fixing buckle 4.3 and a sprayer locking buckle 4.4, and the sprayer locking buckle 4.4 comprises a locking seat 4.41 fixed on the bottom surface of the gas-liquid two-fluid sprayer 4 and is connected with a locking connecting rod 4.43 and a locking buckle head 4.44 through a rotating shaft 4.42; the top surface and the bottom surface of the gun barrel sleeve 3 are provided with a fixed clamping groove 3.4 and a fixed clamping opening groove 3.5; the fixing buckle 4.3 and the locking buckle head 4.44 are respectively inserted into the fixing clamping groove 3.4 and the fixing clamping opening groove 3.5 to ensure that the gun tube sleeve 3 and the gas-liquid two-fluid spray head 4 are fixedly connected;

a propelling container 5 is arranged in the gun tube sleeve 3, the propelling container 5 comprises a reagent container 5.1 and a propelling rod 5.2 which slides back and forth in the reagent container 5.1, and a propelling output tube head 5.11 is arranged at the top end of the reagent container 5.1; the propulsion output pipe head 5.11 is communicated with a liquid inlet 4.1 of the gas-liquid two-fluid nozzle 4;

the distance push rod assembly 6 comprises a distance push rod 6.1, the distance push rod 6.1 is L-shaped and consists of a push rod 6.11 and a fixed rod 6.12; the pushing rod 6.11 is arranged on one side of the propelling container 5, the fixing rod 6.12 is connected with the tail end of the propelling container 5, the tail end of the fixing rod 6.12 is connected with the backspacing linear spring 6.2, and the backspacing linear spring 6.2 is arranged on the spring rod 1.2;

the side surface of the push rod 6.11 is a ratchet surface, and a ratchet fixing elastic sheet 6.3 and a ratchet pushing elastic sheet 6.4 are correspondingly arranged on the ratchet surface; the ratchet fixing elastic sheet 6.3 is fixed on the inner side wall of the gun barrel sleeve 3, and the tail end of the ratchet pushing elastic sheet 6.4 is connected with the power transmission connecting rod 7; the distance push rod 6.1 is connected with the power transmission connecting rod 7 and moves back and forth in the barrel sleeve 3 along with the trigger 2;

a backspacing groove 3.2 is arranged on the top surface of the gun barrel sleeve 3, a distance push rod backspacing handle 6.5 is arranged on the backspacing groove 3.2, and the other end of the spring of the distance push rod backspacing handle 6.5 is fixed on a handle spring post 3.3; a thimble on the distance push rod backspacing handle 6.5 is tightly attached to the ratchet fixing elastic sheet 6.3 and the ratchet pushing elastic sheet 6.4, and when the backspacing handle 6.5 is pushed, the ratchet fixing elastic sheet 6.3 and the ratchet pushing elastic sheet 6.4 can be jacked open to be separated from the ratchet on the distance push rod 6.1;

an air inlet device 8 is arranged at the bottom of the gun handle 1.1, the air inlet device 8 comprises an air inlet valve 8.2, an external air inlet 8.3 is arranged at the bottom of the air inlet valve 8.2, an air pipe 8.1 is connected to the side surface of the air inlet valve 8.2, the air pipe 8.1 is connected to an air outlet 3.6 of the gun body and is connected with an air inlet 4.2, an air valve control rod 8.4 is arranged on the top surface of the air inlet valve 8.2, and the top end of the air valve control rod 8.4 is connected with the trigger 2; an external gas inlet 8.3 is connected with a compressed gas pipe which is externally connected, and a gas pipe 8.1 is connected with a gas inlet 4.2 of a gas-liquid two-fluid spray head 4 through a gun barrel sleeve 3.

Example 2

The present embodiment has substantially the same structure as embodiment 1, except that:

the gun barrel sleeve 3 is L-shaped, when the gun barrel sleeve 3 and the gas-liquid two-fluid spray head 4 are installed, an installation groove 9 is formed on the outer walls of the gun barrel sleeve 3 and the gas-liquid two-fluid spray head 4, the propelling container 5 is arranged on the installation groove 9, and a sliding groove 3.1 is formed in the side wall of the gun barrel sleeve 3;

the distance push rod assembly 6 comprises a distance push rod 6.1, the distance push rod 6.1 is L-shaped and consists of a push rod 6.11 and a fixed rod 6.12; the push rod 6.11 is arranged on one side of the propelling container 5, the fixed rod 6.12 is connected with the tail end of the propelling container 5 and slides back and forth in the chute 3.1, the tail end of the fixed rod 6.12 is connected with the backspacing linear spring 6.2, and the backspacing linear spring 6.2 is arranged on the spring rod 1.2 at the tail end of the gun body 1.

The working process of the spray guns of the two embodiments is the same, and the working process is as follows:

communicating the spray gun with external gas equipment, and filling a biological reagent into the reagent container 5.1; the compressed gas and the biological reagent can be sprayed in a gas-liquid mixing mode by using a gas-liquid two-fluid nozzle 4 of the spraying gun, the spraying acts on the surface of the wound, and the biological reagent is sprayed on the surface of the wound to form a thin and uniform biological reagent coating, so that the wound 5 can recover and grow; the method comprises the following specific steps:

1. the compressed gas is connected to the gas path of the gas-liquid two-fluid spray head 4 through the gas inlet valve 8.2; the biological reagent is contained in a reagent container 5.1, the reagent container 5.1 is connected with a liquid path of the gas-liquid two-fluid spray head 4, meanwhile, the reagent container 5.1 is connected with a distance push rod assembly 6 and a power transmission connecting rod 7, and when the power transmission connecting rod 7 pushes the distance push rod assembly 6, the biological reagent in the reagent container 5.1 can be quantitatively injected into the liquid path of the gas-liquid two-fluid spray head 4;

2. when the trigger 2 is not depressed in the natural state: the air inlet valve 8.2 is disconnected, the power transmission connecting rod 7 cannot be started, and compressed gas and biological reagents cannot enter the gas-liquid two-fluid nozzle 4; at this time, spray cannot be formed in the gas-liquid two-fluid spray head 4; the spray gun is in an inoperative state.

3. When the trigger 2 is depressed in compression: the air inlet valve 8.2 is opened, the power transmission connecting rod 7 is in the moving process, compressed air and biological reagents enter the gas-liquid two-fluid spray head 4, and spray is formed in the gas-liquid two-fluid spray head 4. The spraying gun is in a working state;

4. when the trigger 2 is pressed down to the end point, the trigger 2 is released, the trigger 2 naturally returns to the starting point under the action of the trigger spring 2.1, and an atomization stroke is finished; pressing the trigger 2 again enters the next stroke;

during use, the gas-liquid two-fluid spray head 4, the reagent container 5.1 and the distance push rod assembly 6 can be detached and replaced.

Other parts not described in detail are prior art. Although the above embodiments have been described in detail, it is only a part of the embodiments of the present invention, rather than all embodiments, and other embodiments can be obtained without inventive step according to the present embodiments.

Claims (9)

1. An intermittent quantitative high-viscosity biological agent spraying gun comprises a gun body (1), a trigger (2) and a gun barrel sleeve (3), wherein the gun body (1) is in a gun shell shape; the method is characterized in that: the top end of the gun tube sleeve (3) is provided with a gas-liquid two-fluid spray head (4), the top and the bottom of the gas-liquid two-fluid spray head (4) are respectively provided with a fixing buckle claw (4.3) and a spray head locking buckle (4.4), and the top surface and the bottom surface of the gun tube sleeve (3) are provided with a fixing clamping groove (3.4) and a fixing clamping opening groove (3.5); the fixing buckle grab (4.3) and the spray head locking buckle (4.4) are respectively inserted into the fixing clamping groove (3.4) and the fixing clamping opening groove (3.5);

a propelling container (5) is arranged on the gun tube sleeve (3), and a propelling output tube head at the top end of the propelling container (5) is communicated with a liquid inlet (4.1) of the gas-liquid two-fluid spray head (4); the tail end of the propelling container (5) is connected with a distance push rod assembly (6), and the distance push rod assembly (6) is connected with a power transmission connecting rod (7) and moves back and forth in the barrel sleeve (3) along with the trigger (2);

the gas gun is characterized in that an air inlet device (8) is arranged at the bottom of a gun handle (1.1) of the gun body (1), the bottom of the air inlet device (8) is connected with an external compressed gas pipe, an air pipe (8.1) is arranged on the air inlet device (8), and the air pipe (8.1) is connected with a gas inlet (4.2) of a gas-liquid two-fluid spray head (4) through a gun barrel sleeve (3).

2. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: when the propelling container (5) is arranged inside the gun barrel sleeve (3); the distance push rod assembly (6) comprises a distance push rod (6.1), the distance push rod (6.1) is L-shaped and consists of a push rod (6.11) and a fixing rod (6.12); the push rod (6.11) is arranged on one side of the propelling container (5), the fixing rod (6.12) is connected with the tail end of the propelling container (5), the tail end of the fixing rod (6.12) is connected with the backspacing linear spring (6.2), and the backspacing linear spring (6.2) is arranged on the spring rod (1.2).

3. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: the gun tube sleeve (3) is L-shaped, when the gun tube sleeve (3) and the gas-liquid two-fluid spray nozzle (4) are installed, an installation groove (9) is formed in the outer wall of the gun tube sleeve (3) and the gas-liquid two-fluid spray nozzle (4), the propelling container (5) is arranged on the installation groove (9), and a sliding groove (3.1) is formed in the side wall of the gun tube sleeve (3);

the distance push rod assembly (6) comprises a distance push rod (6.1), the distance push rod (6.1) is L-shaped and consists of a push rod (6.11) and a fixing rod (6.12); the push rod (6.11) is arranged on one side of the propelling container (5), the fixing rod (6.12) is connected with the tail end of the propelling container (5) and slides back and forth in the sliding groove (3.1), the tail end of the fixing rod (6.12) is connected with the backspacing linear spring (6.2), and the backspacing linear spring (6.2) is arranged on the spring rod (1.2) at the tail end of the gun body (1).

4. The intermittent metered high viscosity biologic spray gun of claim 2 or 3, wherein: the side surface of the push rod (6.11) is a ratchet surface, and a ratchet fixing elastic sheet (6.3) and a ratchet pushing elastic sheet (6.4) are correspondingly arranged on the ratchet surface; the ratchet fixing elastic sheet (6.3) is fixed on the inner side wall of the gun barrel sleeve (3), and the tail end of the ratchet pushing elastic sheet (6.4) is connected with the power transmission connecting rod (7).

5. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: a backspacing groove (3.2) is formed in the top surface of the gun barrel sleeve (3), a distance push rod backspacing handle (6.5) is arranged on the backspacing groove (3.2), and the other end of a spring of the distance push rod backspacing handle (6.5) is fixed on a handle spring column (3.3); the thimble on the distance push rod backspacing handle (6.5) is tightly attached to the ratchet fixing elastic sheet (6.3) and the ratchet pushing elastic sheet (6.4), and when the backspacing handle (6.5) is pushed, the ratchet fixing elastic sheet (6.3) and the ratchet pushing elastic sheet (6.4) can be jacked open to be separated from the ratchet on the distance push rod (6.1).

6. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: impel container (5) including reagent container (5.1) and make a round trip in reagent container (5.1) gliding propulsion pole (5.2), reagent container (5.1) top is provided with impels output tube head (5.11).

7. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: air inlet unit (8) are including admission valve (8.2), admission valve (8.2) bottom is provided with outside gas inlet (8.3), admission valve (8.2) side is connected with trachea (8.1), trachea (8.1) are connected to gas outlet (3.6) and the gas inlet (4.2) of body of a gun and are connected, admission valve (8.2) top surface is provided with pneumatic valve control lever (8.4), pneumatic valve control lever (8.4) top is connected with trigger (2).

8. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: the spray head locking buckle (4.4) comprises a locking seat (4.41) fixed on the bottom surface of the gas-liquid two-fluid spray head (4) and is connected with a locking connecting rod (4.43) and a locking buckle head (4.44) through a rotating shaft (4.42).

9. The intermittent dosing high viscosity biologic spray gun of claim 1, wherein: and a positioning pin (4.5) is arranged on the connecting surface of the gas-liquid two-fluid spray head (4) and the gun tube sleeve (3).

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