Liquid metering gun for chemical metering

Abstract

The invention discloses a liquid metering gun for chemical metering, which comprises a transmission pipe, a grip and a gun body, the side surface of the gun body is in threaded connection with a damping rod for buffering, the outer surface of the damping rod is sleeved with a spring for resetting, one end of the damping rod is in threaded connection with an impact plate for bearing force, and the other end of the damping rod is in threaded connection with a spring for resetting. The outer surface of the conveying pipe is sleeved with a limiting ring used for fixing, the upper end of the limiting ring is detachably connected with a buffer rod, and one end of the buffer rod is in threaded connection with a rubber plate used for bearing force. According to the liquid metering gun for chemical metering, through cooperative arrangement of a damping rod, a spring and an impact plate, after a worker accidentally falls the liquid metering gun onto the ground, impact force generated by falling can be absorbed more conveniently, the gun body is protected, and damage to the gun body caused by the impact force is reduced; and meanwhile, by means of matched arrangement of a limiting ring, a buffer rod and a rubber plate, protection can be provided for the conveying pipe after falling.

Description

Technical Field

[0001] The invention relates to the technical field of metering guns, in particular to a liquid metering gun for chemical metering. Background Art

[0002] The metering gun acts as an instrument to measure the volume flow of liquid gasoline, diesel, engine oil, hydraulic oil, etc. flowing through a pipeline. According to the type of flow meter, it can be divided into horizontal propeller metering guns and elliptical gear flowmeter metering guns, etc. According to the function, it can be divided into ordinary metering guns, electronic metering guns, self-sealing metering guns, etc. Among them, the electronic metering gun is usually equipped with a display and buttons, which can easily set the measurement unit and view the current filling volume and the cumulative filling volume. The self-sealing metering gun has the function of automatically jumping the gun when the oil is full, which improves the safety and accuracy of filling. The working principle of the metering gun is mainly based on the principle of volumetric flowmeter, that is, using mechanical measuring elements to continuously divide the fluid into single known volume parts, and gradually and repeatedly fill and discharge these volume parts, thereby achieving accurate measurement of the flow.

[0003] Metering guns are widely used in highway engineering construction, oil management of factories, mines, institutions and groups, as well as liquid filling and metering in industries such as chemical industry and new energy vehicles. When using a metering gun, ensure that it is firmly and reliably connected to the pipeline to avoid leakage and safety hazards. The accuracy of the metering gun is affected by many factors, such as the temperature, pressure, and viscosity of the liquid. Therefore, attention should be paid to changes in these factors during use, and adjustments and calibrations should be made according to actual conditions. It is strictly forbidden to use the metering gun in measurement situations that exceed its design range and accuracy to avoid damage to the equipment or measurement errors.

[0004] However, the existing devices have the following problems:

[0005] The existing metering guns are not easy to protect when used by staff. For female staff, due to the heavy weight of the metering gun itself, it is easy to feel strenuous when holding it. Once it drops, the impact force generated by the drop is large, so it is easy to cause damage, which not only affects the accuracy and service life of the metering gun, but may also have an adverse impact on work progress and safety. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the present invention provides a liquid metering gun for chemical metering, which has the advantages of being easy to protect and solves the problem of easy damage after falling.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid metering gun for chemical metering, comprising a transmission tube, a handle and a gun body, the side of the gun body is threadedly connected with a damping rod for buffering, the outer surface of the damping rod is sleeved with a spring for resetting, one end of the damping rod is threadedly connected with an impact plate for bearing force, the outer surface of the transmission tube is sleeved with a limiting ring for fixing, the upper end of the limiting ring is detachably connected with a buffer rod, and one end of the buffer rod is threadedly connected with a rubber plate for bearing force.

[0010] Preferably, one end of the limiting ring is fixedly connected to a limiting plate for positioning, and an upper end of the limiting plate is provided with a clamping hole for positioning.

[0011] Preferably, a threaded column for fixing is inserted into the upper end of the limit plate, a groove for positioning is provided at the upper end of the limit plate, and the threaded column passes through one side of the limit plate and is threadedly connected to the inner wall of the transmission tube.

[0012] Preferably, a hose for transmission is threadedly connected to the side of the handle, and a valve for control is plugged into the upper end of the handle.

[0013] Preferably, a switch for control is detachably connected to the lower end of the handle, and a pressure gauge is threadedly connected to the upper end of the handle.

[0014] Preferably, one end of the transmission tube is fixedly connected to a limiting tube, and the upper end of the transmission tube is fixedly connected to a support plate for positioning.

[0015] Preferably, a rotating rod for adjustment is threadedly connected to the side surface of the support plate, and a suction plate for adsorption is threadedly connected to one end of the rotating rod.

[0016] Preferably, an air inlet pipe for air suction is threadedly connected to the side surface of the suction plate, and one end of the air inlet pipe is threadedly connected to a negative pressure pump.

[0017] Preferably, a positioning frame for connection is sleeved on the outer surface of the negative pressure pump, and a pin for fixing is inserted at the upper end of the positioning frame.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a liquid metering gun for chemical metering, which has the following

[0020] Beneficial effects:

[0021] The liquid metering gun for chemical metering, through the coordinated arrangement of the damping rod, spring and impact plate, can more conveniently absorb the impact force generated by the fall, protect the gun body, and reduce the damage caused by the impact force to the gun body, after the worker accidentally drops the device to the ground. At the same time, with the help of the coordinated arrangement of the limit ring, buffer rod and rubber plate, after the fall, it can provide protection for the transmission pipe and absorb the impact force and vibration on the outside, avoiding excessive impact force after the fall, causing damage to the device, and further affecting the accuracy and service life of the metering gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention provides a schematic structural diagram of a liquid metering gun for chemical metering;

[0023] Figure 2 The present invention provides a schematic diagram of the structure of a liquid metering gun transmission tube for chemical metering;

[0024] Figure 3 The present invention provides a schematic diagram of the structure of a liquid metering gun handle for chemical metering;

[0025] Figure 4 The present invention provides a schematic structural diagram of a limit ring of a liquid metering gun for chemical metering;

[0026] Figure 5 The present invention provides a schematic structural diagram of a liquid metering gun support plate for chemical metering;

[0027] Figure 6 The present invention provides a schematic structural diagram of a negative pressure pump of a liquid metering gun for chemical metering.

[0028] In the figure: 1. transmission tube; 2. grip; 3. gun body; 4. damping rod; 5. spring; 6. impact plate; 7. limit ring; 8. buffer rod; 9. rubber plate; 10. limit plate; 11. clamping hole; 12. threaded column; 13. groove; 14. hose; 15. valve; 16. switch; 17. pressure gauge; 18. limit tube; 19. support plate; 20. rotating rod; 21. suction plate; 22. air inlet pipe; 23. negative pressure pump; 24. positioning frame; 25. pin. 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 1-6, including a transmission tube 1, a grip 2 and a gun body 3, the side of the grip 2 is threadedly connected with a hose 14 for transmission, the upper end of the grip 2 is plugged with a valve 15 for control, the lower end of the grip 2 is detachably connected with a switch 16 for control, the upper end of the grip 2 is threadedly connected with a pressure gauge 17, the side of the gun body 3 is threadedly connected with a damping rod 4 for buffering, the outer surface of the damping rod 4 is sleeved with a spring 5 for resetting, with the help of the setting of the hose 14, the liquid outside can be more conveniently sent into the gun body 3, with the help of the setting of the valve 15, it is used to control the flow speed of the liquid entering the gun body 3, with the help of the setting of the switch 16, it is used to control the speed of the liquid outflow of the liquid metering gun, and the pressure inside the metering gun is displayed by the pressure gauge 17;

[0031] See also Figure 2-6 , one end of the damping rod 4 is threadedly connected with an impact plate 6 for bearing force, the outer surface of the transmission tube 1 is sleeved with a limiting ring 7 for fixing, one end of the limiting ring 7 is fixedly connected with a limiting plate 10 for positioning, the upper end of the limiting plate 10 is provided with a clamping hole 11 for positioning, the upper end of the limiting plate 10 is plugged with a threaded column 12 for fixing, the upper end of the limiting plate 10 is provided with a groove 13 for positioning, the threaded column 12 passes through one side of the limiting plate 10 and is threadedly connected to the inner wall of the transmission tube 1, the upper end of the limiting ring 7 is detachably connected with a buffer rod 8, with the help of the setting of the limiting plate 10, the clamping hole 11 and the threaded column 12, in order to facilitate the staff to fix the limiting ring 7 on the outer surface of the transmission tube 1, the outer surface of the transmission tube 1 is protected, and it is also convenient for the staff to disassemble the limiting ring 7;

[0032] See also Figure 1-5 , one end of the buffer rod 8 is threadedly connected with a rubber plate 9 for bearing force, one end of the transmission pipe 1 is fixedly connected with a limiting pipe 18, the upper end of the transmission pipe 1 is fixedly connected with a support plate 19 for positioning, the side of the support plate 19 is threadedly connected with a rotating rod 20 for adjustment, one end of the rotating rod 20 is threadedly connected with a suction plate 21 for adsorption, the side of the suction plate 21 is threadedly connected with an intake pipe 22 for suction, one end of the intake pipe 22 is threadedly connected with a negative pressure pump 23, the outer surface of the negative pressure pump 23 is sleeved with a positioning frame 24 for connection, and the upper end of the positioning frame 24 is plugged with a pin 25 for fixing;

[0033] With the help of the setting of the limiting tube 18, it is convenient for the staff to plug the transmission tube 1 into the interior of the vehicle body where it is needed. At the same time, with the help of the supporting plate 19, the rotating rod 20 and the suction plate 21, after the staff sends the limiting tube 18 into the interior of the vehicle body tank, the rotating rod 20 is adjusted to make the suction plate 21 at one end rotate forward, and then adsorbed on the outer surface of the vehicle body, and the transmission tube 1 and the limiting tube 18 are fixed and limited to avoid the problem of falling off during refueling. Through the coordinated setting of the air intake pipe 22 and the negative pressure pump 23, when the staff makes the suction plate 21 fit the outer surface of the vehicle body, the suction force generated by the negative pressure pump 23 can quickly extract the air from the side of the suction plate 21, so that the suction plate 21 is quickly adsorbed, and through the coordinated setting of the positioning frame 24 and the pin 25, it is convenient for the staff to fix the negative pressure pump 23 on the outer surface of the transmission tube 1.

[0034] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0035] To sum up, when using the liquid metering gun for chemical metering, the hose 14 is threadedly connected to the side of the handle 2 to ensure that the connection is tight and leak-free, and then one end of the limit tube 18 is plugged into the interior of the vehicle body to ensure that the transmission tube 1 can smoothly transport the liquid. According to the length, the rotating rod 20 on the support plate 19 is adjusted so that the suction plate 21 can fit the outer surface of the vehicle body that needs to be refueled, and the switch 16 at the lower end of the handle 2 is turned on to transfer the liquid. The reading of the pressure gauge 17 is observed to ensure that the pressure inside the metering gun is within the set range. During use, if it is accidentally dropped, the damping rod 4 and the spring 5 are arranged in cooperation to absorb the impact force generated by the drop and protect the gun body 3.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] 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 liquid metering gun for chemical metering, comprising a transmission tube (1), a handle (2) and a gun body (3), characterized in that: The side surface of the gun body (3) is threadedly connected to a damping rod (4) for buffering, the outer surface of the damping rod (4) is sleeved with a spring (5) for resetting, one end of the damping rod (4) is threadedly connected to an impact plate (6) for receiving force, the outer surface of the transmission tube (1) is sleeved with a limiting ring (7) for fixing, the upper end of the limiting ring (7) is detachably connected to a buffer rod (8), and one end of the buffer rod (8) is threadedly connected to a rubber plate (9) for receiving force.

2. A liquid metering gun for chemical metering according to claim 1, characterized in that: One end of the limiting ring (7) is fixedly connected to a limiting plate (10) used for positioning, and the upper end of the limiting plate (10) is provided with a clamping hole (11) used for positioning.

3. A liquid metering gun for chemical metering according to claim 2, characterized in that: A threaded column (12) for fixing is inserted at the upper end of the limiting plate (10), a groove (13) for positioning is provided at the upper end of the limiting plate (10), and the threaded column (12) passes through one side of the limiting plate (10) and is threadedly connected to the inner wall of the transmission pipe (1).

4. The liquid metering gun for chemical metering according to claim 1, characterized in that: A hose (14) for transmission is threadedly connected to the side of the handle (2), and a valve (15) for control is plugged into the upper end of the handle (2).

5. The liquid metering gun for chemical metering according to claim 1, characterized in that: The lower end of the handle (2) is detachably connected to a switch (16) for control, and the upper end of the handle (2) is threadedly connected to a pressure gauge (17).

6. A liquid metering gun for chemical metering according to claim 1, characterized in that: One end of the transmission tube (1) is fixedly connected to a limiting tube (18), and the upper end of the transmission tube (1) is fixedly connected to a supporting plate (19) for positioning.

7. A liquid metering gun for chemical metering according to claim 6, characterized in that: A rotating rod (20) for adjustment is threadedly connected to the side surface of the support plate (19), and a suction plate (21) for adsorption is threadedly connected to one end of the rotating rod (20).

8. A liquid metering gun for chemical metering according to claim 7, characterized in that: An air intake pipe (22) for air intake is threadedly connected to the side surface of the suction plate (21), and a negative pressure pump (23) is threadedly connected to one end of the air intake pipe (22).

9. A liquid metering gun for chemical metering according to claim 8, characterized in that: The outer surface of the negative pressure pump (23) is sleeved with a positioning frame (24) for connection, and the upper end of the positioning frame (24) is plugged with a pin (25) for fixing.

Images