Pipeline sampling valve device

Abstract

A pipeline sampling valve device belongs to the technical field of sampling equipment and comprises an electromagnetic valve, a sampling bottle, a valve, an alarm circuit, a control circuit and a liquid level depth detection mechanism, a shell is arranged at the lower end of the sampling bottle, the alarm circuit and the control circuit are installed in the shell and electrically connected, the liquid level depth detection mechanism comprises a guide pipe, a guide rod and a metal sheet, and the metal sheet is installed below the guide rod; the liquid inlet pipe is arranged outside the upper end of the sampling bottle and is connected with one end of the valve; an opening is formed in one side of the upper end of the sampling bottle; the guide pipe is arranged in the opening; the guide rod is sleeved in the guide pipe in a sliding manner; according to the novel sampling bottle, the sampling amount in the sampling bottle can be set according to needs, an alarm can be given out to prompt workers within a period of time when no liquid enters the sampling bottle due to various reasons, and the probability that fluid in a pipeline overflows is correspondingly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sampling equipment technical field, especially a pipeline sampling valve device. BACKGROUND

[0002] In industrial production, often involves sampling the material in the pipeline (pipeline) conveying liquid, in the prior art, usually install a sampling valve at the side end of the pipeline corresponding position, sampling, bottle mouth and sampling valve output end of sampling bottle etc.

[0003] Although the existing sampling valve meets the sampling needs to some extent, but also has some technical defects due to the limitation of structure. First, the bottle mouth of the sampling bottle and the sampling valve need to be connected by the hose connection mode before sampling, the hose connection mode exists fluid overflow from the connection point and the probability of damaging the connecting pipe when the pressure in the pipeline is too large (the strength of the connecting hose is not enough, and the pressure is too large after the pipe explosion phenomenon). Second, the liquid amount entering the sampling bottle completely relies on the opening and closing of the valve controlled by the staff, so when the staff closes the sampling valve too early, it will cause the sample to be too small, on the contrary, the sampling valve is closed too late, it will cause the sample in the sampling bottle to be too much, when separating the sampling valve and the sampling bottle, there is a probability of liquid overflow from the sampling bottle, causing liquid sample waste. In summary, it is necessary to provide a pipeline sampling valve device that can conveniently separate and combine the sampling bottle and the sampling valve, and automatically close the sampling when the corresponding sampling amount is reached. SUMMARY

[0004] In order to overcome the disadvantages of the existing sampling valve due to the limitation of structure, the utility model provides a pipeline sampling valve device which can conveniently separate and combine the sampling point and the sampling bottle under the joint action of related structures, and can set the sampling amount in the sampling bottle according to the needs, thereby bringing convenience to the staff and reducing the probability of fluid overflow in the pipeline.

[0005] The technical scheme adopted by the utility model to solve the technical problems is:

[0006] A pipeline sampling valve device, comprising an electromagnetic valve, a sampling bottle, a valve, and further comprising an alarm circuit, a control circuit, and a liquid level depth detection mechanism; a shell is installed at the lower end of the sampling bottle, the alarm circuit and the control circuit are installed in the shell, and the liquid level depth detection mechanism comprises a guide pipe, a guide rod, and metal sheets, two metal sheets are insulatively installed at the lower end of the guide rod; a liquid inlet pipe is installed outside the upper end of the sampling bottle, the liquid inlet pipe is internally threaded, one end of the liquid inlet pipe is connected with the valve, one side of the upper end of the sampling bottle is provided with an opening, the guide pipe is installed in the opening in an external manner, the guide rod is slidably and sealingly sleeved in the guide pipe, the guide pipe is provided with a threaded hole at the side end, a fixing bolt is threadedly installed in the threaded hole, and the metal sheets are located in the sampling bottle; one end of the electromagnetic valve is connected with a connecting pipe, the other end of the connecting pipe is connected with the other end of the valve, a liquid outlet pipe is installed outside the upper end of the sampling position of a liquid conveying pipeline, and the other end of the liquid outlet pipe is connected with the other end of the electromagnetic valve; the power output end of the control circuit is electrically connected with the power input end of the electromagnetic valve and the signal input end of the alarm circuit.

[0007] Further, the electromagnetic valve is a normally closed valve core electromagnetic valve.

[0008] Further, the lower end of the sampling bottle and the upper end of the liquid conveying pipeline are spaced apart.

[0009] Further, the alarm circuit comprises a resistance, a capacitor, a triode and an alarm device which are electrically connected, the first resistance and the second resistance are connected at one end, the capacitor is connected with the triode at the other end, and the triode is connected with the alarm device at the other end.

[0010] Further, the control circuit comprises a resistance, a relay, a triode which are electrically connected, and the metal sheets are electrically connected, the first metal sheet is connected with the positive power input end and the control power input end of the relay, the second metal sheet is connected with one end of the resistance, the other end of the resistance is connected with the base of the triode, and the triode is connected with the negative power input end of the relay.

[0011] Compared with the prior art, the manual valve of the sampling bottle and the connecting pipe are threadedly connected, the separation and combination between the sampling bottle and the pipeline sampling area can be conveniently realized, the sampling amount in the sampling bottle can be set according to the needs under the action of the control circuit, the liquid level depth detection mechanism and the electromagnetic valve, and when the sampling bottle does not enter the liquid in a period of time due to various reasons (for example, the production line has a problem and no liquid enters the pipeline), an alarm sound can be emitted to prompt the staff. The novel pipeline sampling valve device brings convenience to the staff and reduces the probability of fluid overflow in the pipeline, and therefore has a good application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0012] The novel pipeline sampling valve device will be further described below in combination with the drawings and embodiments.

[0013] Figure 1 is the overall structure schematic diagram of the utility model.

[0014] Figure 2 is the local structure schematic diagram of the utility model.

[0015] Figure 3 is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] Figure 1 、 2 , as shown in 3, a pipeline sampling valve device, including battery G1, charging socket CZ1, power switch S1, electromagnetic valve DC, sampling bottle 1, manual valve 2, still have alarm circuit 3, control circuit 4, liquid level depth detection mechanism;Sampling bottle 1's lower end is welded with a hollow shell 101, battery G1, charging socket CZ1, power switch S1, alarm circuit 3, control circuit 4 are installed on the circuit board in shell 101 (the jack of charging socket and the handle of power switch are located respectively in the two openings outside the outer end of shell 101), and the liquid level depth detection mechanism includes guide pipe 51, guide rod 52, metal sheet T, two metal sheets T are insulated and installed at the lower end of guide rod 52 with the interval distance (2mm) left and right, and the wire connected with metal sheet T is led out to the upper end outside of guide rod 52 via the opening in the middle of guide rod 52 (the opening of guide rod 52 is sealed with sealing glue), the upper end of sampling bottle 1 is welded with a liquid inlet elbow 102, which is communicated with the inside of sampling bottle 1, the left end of elbow 102 has internal thread, the left end of elbow 102 and one end of manual valve 2 are connected via pipe joint, the upper end right side of sampling bottle 1 is welded with an opening, guide pipe 51 is sealingly welded in the opening outside the middle, guide rod 52 is slidingly sealed in guide pipe 51 (the inside of guide pipe has sealing glue sleeve, which can prevent liquid from escaping between guide rod and guide pipe), there is a screw hole in the middle of the right end of guide pipe 51, a manual bolt 53 is installed in the screw hole via thread, and metal sheet T is located in sampling bottle;One end of electromagnetic valve DC is connected with connecting pipe 6 via thread, the other end of connecting pipe 6 and the other end of manual valve 53 are connected via thread, the upper end of liquid delivery pipeline 7 at sampling position is welded with a liquid outlet pipe 71, which is interacted with the inside of liquid outlet pipe 71, and the upper end of liquid outlet pipe 71 and the other end of electromagnetic valve DC are connected via thread.

[0017] Figure 1 、 2The electromagnetic valve DC is a normally closed valve electromagnetic valve. The lower end of the sampling bottle 1 and the upper end of the liquid delivery pipeline 7 are spaced apart. The alarm circuit includes resistors R2 and R3, a capacitor C1, a transistor Q2 and an alarm B connected through the circuit board. One end of the first resistor R2 and one end of the second resistor R3, the positive electrode of the capacitor C1 are connected, the negative electrode of the capacitor C1 and the emitter of the transistor Q2 are connected, and the collector of the transistor Q2 and the negative power input end of the alarm B are connected. The control circuit includes resistors R1, relays J1, transistors Q1, and metal sheets T connected through the circuit board. The positive power input end of the relay J1 and the control power input end, the first metal sheet T are connected. The second metal sheet T and one end of the resistor R1 are connected. The other end of the resistor R1 and the base of the transistor Q1 are connected. The collector of the transistor Q1 and the negative power input end of the relay J1 are connected. The two poles of the battery G1 and the two ends of the charging socket CZ1 are respectively connected through the wires (when the battery G1 has no electricity, the plug of the 12V power charger is inserted into the charging socket to charge it), and the power input end of the alarm circuit, the positive power input end of the alarm B and the emitter of the transistor Q2, the power input end of the control circuit, the positive power input end of the relay J1 and the emitter of the transistor Q1 are respectively connected through the wires. The power output end of the control circuit, the normally closed contact end of the relay J1 and the emitter of the transistor Q1, the power input end of the electromagnetic valve DC, the signal input end of the alarm circuit, the other end of the resistor R2 and the emitter of the transistor Q2 are respectively connected through the wires. The power input end of the electromagnetic valve DC and the normally closed contact end of the relay J1 and the emitter of the transistor Q1 are connected through the power plug and the power socket (convenient for separating and combining the power output by the normally closed contact end of the relay J1 and the emitter of the transistor Q1). The electromagnetic valve DC is a 1W normally closed valve electromagnetic valve; the transistors Q1 and Q2 are model 9013 (NPN); the alarm B is a model FW12V active continuous sound alarm; the relay J1 is model DC12V; the resistors R1, R2 and R3 have resistance values of 20K, 1M and 470K respectively; the battery G1 is model 12V / 5Ah; and the capacitor C1 is a model 4.7μF / 25V electrolytic capacitor.

[0018] Figure 1 、 2, 3, when the staff need to sample, the sampling bottle hand valve 2 (connected to the site after the hand valve 2 and the pipeline upper end between the vertical state) and the connecting pipe 6 are threadedly sealed together, so that, due to the sampling bottle and the connecting pipe between only one connection position, can be convenient to achieve the separation and combination of the sampling bottle 1 and the pipeline 7 sampling area. The staff loosen the hand bolt 53, adjust the position of the guide rod 52 up or down, set the different depths of the two metal sheets T in the sampling bottle 1, realize the sampling of different amount of liquid (the position of the two metal sheets T is high, the subsequent sampling bottle sampling liquid volume is relatively large, and vice versa), and tighten the bolt 53 after adjusting the position. After turning on the power switch S1, the control circuit and the alarm circuit are powered on, and the 12V power supply enters the positive power supply input end of the electromagnetic valve DC and the other end of the resistor R2 through the relay J1 control power input end and normally closed contact end, and the electromagnetic valve DC is powered on. The valve core is opened, so that the liquid with pressure in the pipeline enters the sampling bottle 1 through the electromagnetic valve DC and the opened valve 2. When the amount of liquid in the sampling bottle 1 does not reach the set amount (the resistance value between the two metal sheets T is infinite, and the relay J1 continues to be de-energized and not attracted), the liquid continues to enter the sampling bottle; when the amount of liquid in the sampling bottle 1 reaches the set amount, the liquid will be submerged between the two metal sheets T, the resistance value between the two metal sheets T will be smaller, and the 12V power supply will enter the base of the transistor Q1 through the two metal sheets T and the resistor R1. The resistor R1 reduces the voltage and limits the current, the transistor Q1 is turned on, the low-level output of the collector enters the negative power supply input end of the relay J1, the relay J1 is energized to open the control power input end and the normally closed contact end, so that the electromagnetic valve DC is de-energized and the valve core is closed (representing that the sampling amount reaches the need, the staff can close the valve 2, separate the power plug and the power socket, remove the sampling bottle 1 after sampling, and complete the sampling). In actual situation, when the power switch is turned on, the 12V power supply will charge the capacitor C1 through the resistor R2. During the initial charging time (that is, during the liquid sampling time, for example, less than 5 seconds), when the capacitor C1 is not fully charged, the 12V power supply enters the base of the transistor Q2 through the resistors R2 and R3, which is lower than 0.7V. The transistor Q2 will not be turned on, so the alarm B will not be powered on and sound, indicating that there is no liquid output in the pipeline or the sampling bottle is temporarily not full of liquid. After a period of time (that is, more than the normal time of liquid sampling, for example, more than 5 seconds), when the capacitor C1 is fully charged, the 12V power supply enters the base of the transistor Q2 through the resistors R2 and R3, which is higher than 0.7V. The transistor Q2 will be turned on, the low-level output of the collector enters the negative power supply input end of the alarm B, so the alarm B will be powered on and sound, indicating that there is no liquid output in the pipeline.

[0019] Figure 1 、 2As shown in FIGS. 1-3, by the above technical scheme, the novel device can conveniently realize separation and combination between the sampling bottle and the pipeline sampling area, can set the sampling amount in the sampling bottle according to needs, and can send an alarm sound to prompt the staff when the sampling bottle does not enter liquid due to various reasons within a period of time (for example, the production line has a problem and no liquid enters the pipeline), thereby bringing convenience to the staff and correspondingly reducing the probability of fluid overflow in the pipeline.

[0020] The basic principle and main features of the present application and the advantages of the present application are shown and described above, and for those skilled in the art, it is obvious that the present application is limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

[0021] In addition, it should be understood that, although the present application is described in the form of an embodiment, the embodiment does not only contain one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A pipeline sampling valve device, comprising a solenoid valve, a sampling bottle, and a valve, characterized in that, It also features an alarm circuit, a control circuit, and a liquid level detection mechanism. A housing is installed at the lower end of the sampling bottle, and the alarm circuit and control circuit are housed within the housing. The liquid level detection mechanism includes a guide tube, a guide rod, and two metal plates, with two metal plates insulated and installed at the lower end of the guide rod. An inlet pipe with internal threads is installed on the upper end of the sampling bottle, connecting one end to a valve. An opening is located on one side of the upper end of the sampling bottle, and the outer side of the guide tube is installed within this opening. The guide rod is slidably sealed within the guide tube. A threaded hole is located on the side end of the guide tube, into which a fixing bolt is threaded and installed, with the metal plate positioned inside the sampling bottle. A connecting pipe is installed at one end of the solenoid valve, and the other end of the connecting pipe connects to the other end of the valve. An outlet pipe is installed on the upper end of the sampling position in the liquid delivery pipeline, connecting the other end of the outlet pipe to the other end of the solenoid valve. The power output terminal of the control circuit is electrically connected to the power input terminal of the solenoid valve and the signal input terminal of the alarm circuit.

2. The pipeline sampling valve device according to claim 1, characterized in that, The solenoid valve is a normally closed solenoid valve with a spool.

3. The pipeline sampling valve device according to claim 1, characterized in that, The outer distance between the lower end of the sampling bottle and the upper end of the liquid delivery pipeline.

4. A pipeline sampling valve device according to claim 1, characterized in that, The alarm circuit includes electrically connected resistors, capacitors, transistors, and an alarm. One end of the first resistor and one end of the second resistor are connected to the positive terminal of the capacitor. The negative terminal of the capacitor is connected to the emitter of the transistor, and the collector of the transistor is connected to the negative power input terminal of the alarm.

5. A pipeline sampling valve device according to claim 1, characterized in that, The control circuit includes an electrically connected resistor, a relay, and a transistor, and is electrically connected to a metal plate. The positive power input terminal of the relay and the control power input terminal are connected to the first metal plate. The second metal plate is connected to one end of the resistor, and the other end of the resistor is connected to the base of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay.

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