Water adding device of concrete gas content tester

Abstract

The utility model relates to the technical field of water adding of concrete gas content testers, and discloses a water adding device of a concrete gas content tester, which comprises a tester body, a water injection barrel and a water storage barrel, a movable piston is arranged in the water injection barrel, one side of the water injection barrel is in threaded connection with a cover cap, and an electric push rod is fixedly mounted on the cover cap. One end of the water injection cylinder is provided with a water injection head, the water injection head is in sealed threaded connection with a water injection pipe, the water injection pipe is provided with a one-way valve I and a branch pipe, the branch pipe is provided with a one-way valve II, and a water pumping pipe is inserted into the water inlet end of the branch pipe; a water inlet pipe is installed on an upper cover of the instrument body, the water inlet end of the water inlet pipe is in sealed threaded connection with a water inlet quick connector, and the water outlet end of the water injection pipe is connected with the water inlet quick connector in an inserted mode. The electric push rod is used for driving the piston to move back and forth for water injection, the water injection automation degree is high, use is easier and more convenient, continuous water injection operation can be achieved, people do not need to suck water back and forth and then inject water, and operation is easier and more convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the water adding technical field of concrete air content measuring instrument, concretely to a kind of water adding device of concrete air content measuring instrument. BACKGROUND

[0002] Concrete air content measuring instrument is used to measure the air content in mixture, and concrete can be divided into two components, i.e., coarse aggregate and mortar. The size of coarse aggregate has little direct influence on air content. The introduced air bubbles are distributed in the fine particles of concrete, i.e., mortar, and the performance of mortar determines the performance of the whole concrete. The air content of concrete can be expressed as follows: air content of concrete = volume of air bubbles (mortar) / [volume of coarse aggregate + volume of mortar (including volume of air bubbles)] × 100%. As can be seen from the above expression, the volume of coarse aggregate is an uncertain factor that does not work.

[0003] In use of the existing concrete air content measuring instrument, after concrete is placed into the tank of the concrete air content measuring instrument, the upper cover plate is covered, and then the personnel pressurize and water the water inlet pipe on the cover plate by using air bag until the water outlet valve stops discharging water. In the above water adding operation, the applicant finds that: due to the limited volume of air bag, the personnel need to perform multiple water suction and injection operations, which is troublesome, and the personnel need to manually squeeze back and forth during the whole water adding process, which is very laborious. In order to solve the above problems, a water adding device of concrete air content measuring instrument is provided. SUMMARY

[0004] The utility model aims at: in order to solve the above problems, provide a kind of water adding device of concrete air content measuring instrument.

[0005] The utility model employs the technical scheme as follows: a kind of water adding device of concrete air content measuring instrument, including instrument body, water injection cylinder and water storage bucket, the movable piston is arranged in the water injection cylinder, the side of the water injection cylinder is connected with cap by screw thread, the electric push rod is fixedly installed on the cap, the piston rod end of the electric push rod is connected with the piston, the water injection head is structured in one end of the water injection cylinder, the water injection head is sealingly connected with water injection pipe by screw thread, one-way valve one is arranged on the water injection pipe, the branch pipe is connected on the water injection cylinder, one-way valve two is arranged on the branch pipe, the water suction pipe is inserted in the water inlet end of the branch pipe, the water inlet end of the water suction pipe is inserted into the water storage bucket;

[0006] The water inlet end of the water inlet pipe is sealingly connected with the water inlet quick connector by screw thread.

[0007] In a preferred embodiment, the outer wall of the water injection cylinder is fixedly connected with a hand-held handle.

[0008] In a preferred embodiment, the hand-held handle is provided with a control button for controlling the telescopic operation of the electric push rod.

[0009] In a preferred embodiment, the water inlet end of the water suction pipe is connected with a filter cartridge, the outer wall of the filter cartridge is provided with a plurality of water inlets, and the outer wall of the water inlet is covered with a filter screen mounted on the filter cartridge.

[0010] In a preferred embodiment, the water inlet pipe is provided with a switch valve.

[0011] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present application are:

[0012] 1. In the present application, the electric push rod drives the piston to move back and forth to inject water, which has high automation degree and is more convenient to use.

[0013] 2. In the present application, the structure can realize continuous water injection operation, and personnel are not needed to suck water back and forth and then inject water, which is more simple and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the internal structure of the present application.

[0015] Figure 2 It is a three-dimensional schematic diagram of the water injection mechanism in the present application.

[0016] Figure 3 It is a front view of the filter cartridge in the present application.

[0017] Marked in the figure: 1- instrument body, 2- water injection cylinder, 3- water storage bucket, 4- piston, 5- cap, 6- electric push rod, 7- water injection head, 8- water injection pipe, 9- one-way valve one, 10- branch pipe, 11- one-way valve two, 12- water suction pipe, 13- water inlet pipe, 14- water inlet quick connector, 15- hand-held handle, 16- control button, 17- filter cartridge, 18- water inlet, 19- filter screen, 20- switch valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] The technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application.Figures 1-3 A detailed description is provided of a water-adding device for a concrete air content measuring instrument according to an embodiment of the present invention.

[0020] Example:

[0021] This utility model provides a water-adding device for a concrete air content measuring instrument, referencing... Figures 1 to 3 As shown, the device includes a body 1, a water injection cylinder 2, and a water storage tank 3. A movable piston 4 is installed inside the water injection cylinder 2. A cap 5 is threaded onto one side of the water injection cylinder 2, and an electric actuator 6 is fixedly mounted on the cap 5. The piston rod end of the electric actuator 6 is connected to the piston 4. One end of the water injection cylinder 2 has an injection head 7, and an injection pipe 8 is threadedly connected to the injection head 7. A one-way valve 9 is installed on the injection pipe 8. A branch pipe 10 is connected to the water injection cylinder 2, and a second one-way valve 11 is installed on the branch pipe 10. A suction pipe 12 is inserted into the inlet end of the branch pipe 10, and the inlet end of the suction pipe 12 extends into the water storage tank 3. A water inlet pipe 13 is installed on the top cover of the body 1, and a quick-connect water inlet connector 14 is threadedly connected to the inlet end of the water inlet pipe 13. The outlet end of the water injection pipe 8 is inserted into the quick-connect water inlet connector 14. In this structure... Connect the water injection pipe 8 to the quick-connect fitting 14 of the water inlet pipe 13. Then, start the electric actuator 6 to move the piston 4 backward to pump water. At this time, the piston 4 will pull the one-way valve 2 11 open and the one-way valve 9 closes. Then, the water in the storage tank 3 enters the branch pipe 10 through the pumping pipe 12 and is sent into the water injection cylinder 2 through the water injection pipe 8 to fill the water injection cylinder 2. Then, start the electric actuator 6 to push the piston 4 inward. At this time, the squeezing force of the piston 4 will close the one-way valve 2 11 and push the one-way valve 9 open, so that the water is discharged from the water injection pipe 8 and the water is forced into the water inlet pipe 13 to fill the instrument body 1. Then the piston 4 moves backward to fill the water again, so as to realize the continuous water filling operation until the water is discharged from the exhaust valve of the instrument body 1, and then the operation can be stopped.

[0022] The entire water injection structure uses an electric actuator to extend and retract to push the piston to inject water, eliminating the need for manual operation and making water injection easier and more convenient. At the same time, continuous water injection can be achieved, making water injection more convenient and faster.

[0023] It should be noted that before injecting water, the water injection pipe 8 should not be connected to the water inlet pipe 13. The electric push rod 6 should be started first to drive the piston 4 to move back and forth, so as to use water to expel the air in the entire injection chamber and fill the water injection pipe 8 with water. Then, the water injection pipe 8 should be connected to the water inlet quick connector 14 of the water inlet pipe 13 to inject water, thereby reducing the amount of air entering the instrument body 1.

[0024] refer to Figures 1 to 3 As shown, a hand handle 15 is fixedly connected to the outer wall of the water injection cylinder 2. This structure makes it convenient for personnel to hold the water injection cylinder 2.

[0025] Reference Figures 1 to 3 As shown in the figure, the handheld handle 15 is provided with a control button 16 for controlling the extension and retraction of the electric push rod 6. In this structure, the control button 6 is used to control the extension and retraction of the electric push rod 6.

[0026] It should be noted that the above-mentioned electric push rod 6 is controlled by a single-chip microcomputer. When the control button 6 is pressed, the single-chip microcomputer controller automatically controls the electric push rod 6 to reciprocate, and then press it again to stop running. The specific reciprocating control is to set the lower limit and upper limit of the electric push rod 6 stroke by setting the key and digital indicator light. After setting, the electric push rod 6 stroke only runs within the distance between the set upper and lower limits, thereby realizing automatic reciprocating operation. The specific control equipment and program are disclosed, so they will not be introduced here.

[0027] Reference Figures 1 to 3 As shown in the figure, the water inlet end of the water suction pipe 12 is connected with a filter cylinder 17. A plurality of water inlets 18 are formed on the outer wall of the filter cylinder 17, and a filter screen 19 is installed on the filter cylinder 17. In this structure, water can enter the filter cylinder 17 from the water inlet 18, and then enter the water suction pipe 12. The filter screen 19 on the water inlet 18 filters the impurities in the water, thereby preventing impurities from entering the instrument body 1.

[0028] Reference Figures 1 to 3 As shown in the figure, the water inlet pipe 13 is provided with a switch valve 20. This structure uses the switch valve 20 to control the opening and closing of the water inlet pipe 13.

[0029] The implementation principle of the water adding device of the concrete air content tester according to the embodiment of the application is as follows: before water injection, personnel first put the water suction pipe 12 into the water storage bucket 3, and then perform the exhaust operation (before water injection, the water injection pipe 8 is not connected with the water inlet pipe 13, and the electric push rod 6 needs to be started to drive the piston 4 to move back and forth, so that the water in the entire injection pipe is exhausted, and the water injection pipe 8 is filled with water). After the exhaust operation is completed, the personnel connect the water injection pipe 8 with the water inlet quick connector 14 of the water inlet pipe 13, and then start the electric push rod 6 to drive the piston 4 to move backward to suck water. At this time, the one-way valve two 11 is opened by the piston 4, and the one-way valve one 9 is closed. Then the water in the water storage bucket 3 enters the branch pipe 10 through the water suction pipe 12, and is sent into the water injection cylinder 2 through the water injection pipe 8, thereby injecting water into the water injection cylinder 2. Then the electric push rod 6 is started to push the piston 4 inward. At this time, the extrusion force of the piston 4 makes the one-way valve two 11 close and the one-way valve one 9 open, so that the water is discharged from the water injection pipe 8, thereby pressing the water into the water inlet pipe 13, and then the piston 4 is moved backward to perform the next water injection, thereby realizing continuous water injection operation. After the water is discharged from the exhaust valve of the instrument body 1, the operation can be stopped.

[0030] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A water filling device for a concrete air content measuring instrument, comprising an instrument body (1), a water filling cylinder (2), and a water storage tank (3), characterized in that: The water injection cylinder (2) is equipped with a movable piston (4). A cap (5) is threadedly connected to one side of the water injection cylinder (2). An electric actuator (6) is fixedly installed on the cap (5). The piston rod end of the electric actuator (6) is connected to the piston (4). A water injection head (7) is constructed at one end of the water injection cylinder (2). A water injection pipe (8) is threadedly connected to the water injection head (7). A one-way valve (9) is installed on the water injection pipe (8). A branch pipe (10) is fixedly connected to the water injection cylinder (2). A one-way valve (11) is installed on the branch pipe (10). A water pumping pipe (12) is inserted into the water inlet end of the branch pipe (10). The water inlet end of the water pumping pipe (12) extends into the water storage tank (3). The instrument body (1) is equipped with a water inlet pipe (13) on its upper cover. The water inlet end of the water inlet pipe (13) is connected to a water inlet quick connector (14) with a sealing thread. The water outlet end of the water injection pipe (8) is plugged into the water inlet quick connector (14).

2. The water-adding device for a concrete air content measuring instrument as described in claim 1, characterized in that: A hand handle (15) is fixedly connected to the outer wall of the water injection cylinder (2).

3. The water-adding device for a concrete air content measuring instrument as described in claim 2, characterized in that: The hand handle (15) is provided with a control button (16) for controlling the extension and retraction of the electric actuator (6).

4. The water-adding device for a concrete air content measuring instrument as described in claim 1, characterized in that: The inlet end of the pumping pipe (12) is connected to a filter cylinder (17). The outer wall of the filter cylinder (17) has multiple inlets (18), and the outer wall of the inlets (18) is covered with a filter screen (19) installed on the filter cylinder (17).

5. The water-adding device for a concrete air content measuring instrument as described in claim 1, characterized in that: A switch valve (20) is installed on the water inlet pipe (13).

Images