CN212391738U

CN212391738U - Non-contact pressure controller for pump

Info

Publication number: CN212391738U
Application number: CN202021630379.1U
Authority: CN
Inventors: 凤金泉; 凤元树; 吴玲萍; 耿辉; 凤笑笑
Original assignee: Anhui Longquan Valve Manufacturing Co ltd
Current assignee: Anhui Longquan Valve Manufacturing Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-01-22
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses a non-contact pressure controller for pump, including the feed liquor pipe, connecting pipe and terminal box, when having pressure liquid in the feed liquor pipe, the liquid can act on the arc sealing washer with pressure in the feed liquor pipe, the arc sealing washer warp and gives the ejector pad with pressure conduction, can drive the ejector pad motion when this pressure is greater than the elasticity of spring, the ejector pad drives the movable rod rearward movement, make the conductive joint on the current conducting plate with connect the contact on the electricity board, make the wire switch-on, the electromagnetic relay that the wire was connected this moment controls the circuit circular telegram of the power control cabinet of pump as required, this controller simple structure, and is low in cost, and is suitable for various flow pumps.

Description

Non-contact pressure controller for pump

Technical Field

The utility model relates to a controller technical field specifically is a non-contact pressure controller for pump.

Background

Chemical industry chemical liquid sometimes has been evacuated during the transportation, if the operator is not on site or not in time to shut down, the pump will be idle. The pump idling is very likely to cause failure, and particularly the magnetic pump needs to have a liquid to maintain internal circulation to cool the sliding bearing, and the magnetic pump is damaged if the pump idling is performed for a short time. In addition, if the spacer sleeve breaks, chemical liquid will leak out and cause environmental pollution, so the petrochemical industry standard requires that the spacer sleeve of magnetic drive pump has secondary safeguard measure, but there is the support outside the spacer sleeve of magnetic drive pump, can't directly observe, if the magnetic drive pump breaks down, even there is secondary safeguard measure, chemical liquid actually leaks out from the pump chamber and causes actual environmental pollution, is difficult to remedy.

The prior art generally adopts a controller to prevent the accidents, at present, the first method for preventing the air freight from being frequently used is to prevent the air freight by setting the current maximum and minimum ranges when a pump runs through an electric control cabinet, the mode needs to increase a control cabinet protector and needs complex calculation to set a current value, the cost is high, the complexity is high, and a protector with smaller current cannot control some pumps when used at a small-flow point; the second is through installing the manometer on the support and coming the early warning protection, but if chemical liquid is when strong acid or alkali, just can only choose the manometer of taking the diaphragm for use, and the price is high and the precision is low, is unfavorable for in-service use, for this reason, the utility model provides a can solve a non-contact pressure controller for pump of above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a non-contact pressure controller for pump, feed liquor pipe, connecting pipe and terminal box through setting up are in order to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a non-contact pressure controller for a pump comprises a liquid inlet pipe, wherein a first flange and a second flange are fixedly connected to the left side and the right side of the liquid inlet pipe respectively, a liquid inlet pipe fluoroplastic layer is arranged on the inner wall of the liquid inlet pipe, and two ends of the liquid inlet pipe fluoroplastic layer extend outwards to be clamped with the first flange and the second flange; a third flange plate is fixedly connected to the left side of the connecting pipe and fixedly connected with the second flange plate through bolts, the right side of the connecting pipe is fixedly connected with an external thread joint, a movable hole is arranged in the external thread joint and is communicated with the connecting pipe, the left side of the connecting pipe is provided with a connecting pipe fluoroplastic layer, the left side of the connecting pipe fluoroplastic layer is provided with an arc-shaped sealing ring, a push block is arranged in the connecting pipe, the left side of the push block is in an arc shape and is matched with the right side of the arc-shaped sealing ring, the right side of the push block is connected with a movable rod which is arranged in the movable hole in a penetrating way and extends to the right side of the threaded joint, the right end of the movable rod is provided with a conductive plate, the upper end and the lower end of the right side of the conductive plate are fixedly connected with a conductive joint, a spring is wound on the movable rod, the left end of the spring is abutted against the right side of the push block, and the right end of the spring is abutted against the inner wall of the left side of the external thread joint; the junction box is in threaded connection with the external threaded connector in a threaded mode, two electricity connecting plates are arranged on the inner wall of the junction box, the left sides of the two electricity connecting plates are connected with electricity connecting contacts, the two electricity connecting contacts and the two conductive connectors are arranged on the same height in a clearance mode respectively, the two electricity connecting plates are connected with wires, and the two wires extend out of the junction box and are connected with an electromagnetic relay.

As an optimized technical scheme of the utility model, the arc sealing washer is made by corrosion-resistant rubber material.

As a preferred technical scheme, feed liquor pipe fluoroplastics layer and connecting pipe fluoroplastics layer clearance fit, the ARC seal circle outer wall connection has the outer lane, the outer lane both sides respectively with feed liquor pipe fluoroplastics layer and connecting pipe fluoroplastics layer looks butt.

As an optimized technical scheme, the movable rod right-hand member is provided with first mounting hole, the spiro union has first set screw in the first mounting hole, the current conducting plate is worn to establish on first set screw thread post.

As a preferred technical scheme, the current conducting plate left and right sides wall all is connected with first plastic liner, left side first plastic liner cover current conducting plate left side outer wall and with movable rod right-hand member looks butt, right side first plastic liner covers current conducting plate right side outer wall and wraps up first set screw thread post.

As an optimal technical scheme of the utility model, the terminal box inner wall is provided with two second mounting holes, two the spiro union has second set screw, two in the second mounting hole the electroplax is worn to establish on two second set screw thread posts.

As an optimal technical scheme of the utility model, two connect the electric plate right side to be connected with second plastic liner, second plastic liner covers right side outer wall and terminal box inner wall looks butt.

As a preferred technical scheme, be provided with on the terminal box with two wire assorted through wires hole, two all be provided with the rubber sleeve in the through wires hole, rubber sleeve outer wall and through wires downthehole wall rigid coupling, the rubber sleeve inner wall is laminated with the wire mutually.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model relates to a non-contact pressure controller for pump, through setting up the feed liquor pipe, connecting pipe and terminal box, when having pressure liquid in the feed liquor pipe, the liquid can act on the arc sealing washer with pressure in the feed liquor pipe, the arc sealing washer warp and gives the ejector pad with pressure conduction, can drive the ejector pad motion when this pressure is greater than the elasticity of spring, the ejector pad drives the movable rod rearward movement, make the conductive joint on the current conducting plate with connect the contact on connecing the electricity board, make the wire switch-on, the electromagnetic relay that the wire was connected this moment controls the circuit circular telegram of the power control cabinet of pump as required, this controller simple structure, and is low in cost, and is suitable for various flow pumps.

2. The utility model relates to a non-contact pressure controller for pump is through ejector pad, movable rod and the spring that sets up for no liquid pressure or liquid pressure are too little in the feed liquor pipe, and the ejector pad has the interval with the terminal box under the spring action of spring, avoids the conductive joint on the conducting plate board and connects the contact that connects on the electricity board, avoids pump air transportation to make the pump break down, leads to chemical liquid to leak and leads to environmental pollution.

3. The utility model relates to a non-contact pressure controller for pump is through feed liquor pipe fluoroplastics layer, corrosion-resistant rubber arc seal circle and the connecting pipe fluoroplastics layer that sets up for this controller corrodes the medium and is impairedly at strong acid strong alkali liquid, guarantees normal work.

Drawings

FIG. 1 is a schematic view of the connection relationship of the present invention;

FIG. 2 is a schematic view of the structure of the liquid inlet pipe of the present invention;

FIG. 3 is a schematic view of the structure of the connection tube of the present invention;

fig. 4 is a structural schematic view of the arc-shaped sealing ring of the present invention;

FIG. 5 is a schematic view of the connection between the push block, the movable rod and the spring of the present invention;

FIG. 6 is a schematic view of the connection between the movable rod and the conductive plate of the present invention;

FIG. 7 is a schematic view of the connection between the electrical connection board and the junction box of the present invention;

in the figure: 100. a liquid inlet pipe; 110. a first flange plate; 120. a second flange plate; 130. the fluoroplastic layer of the liquid inlet pipe; 200. a connecting pipe; 210. a third flange plate; 220. connecting a fluoroplastic layer of the pipe; 230. an externally threaded nipple; 231. a movable hole; 240. an arc-shaped sealing ring; 241. an outer ring; 250. a push block; 260. a movable rod; 261. a spring; 270. a first set screw; 280. a conductive plate; 281. a conductive joint; 290. A first plastic liner; 300. a junction box; 310. a rubber sleeve; 320. a wire; 330. a power connection plate; 331. Connecting an electrical contact; 340. a second plastic liner; 350. and a second set screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

EXAMPLE 1

Referring to fig. 1-7, the present invention provides a technical solution: a non-contact pressure controller for a pump comprises a liquid inlet pipe, a connecting pipe 200 and a junction box 300, wherein the left side and the right side of the liquid inlet pipe are fixedly connected with a first flange plate 110 and a second flange plate 120 respectively, the inner wall of the liquid inlet pipe is provided with a liquid inlet pipe fluoroplastic layer 130, and two ends of the liquid inlet pipe fluoroplastic layer 130 extend outwards and are clamped with the first flange plate 110 and the second flange plate 120; a third flange plate 210 is fixedly connected to the left side of the connecting pipe 200, the third flange plate 210 is fixedly connected to the second flange plate 120 through bolts, an external thread joint 230 is fixedly connected to the right side of the connecting pipe 200, a movable hole 231 is formed in the external thread joint 230 and is communicated with the connecting pipe 200, a connecting pipe fluoroplastic layer 220 is arranged on the left side of the connecting pipe 200, an arc-shaped sealing ring 240 is arranged on the left side of the connecting pipe fluoroplastic layer 220, a push block 250 is arranged in the connecting pipe 200, the left side of the push block 250 is arc-shaped and is matched with the right side of the arc-shaped sealing ring 240, a movable rod 260 is connected to the right side of the push block 250, the movable rod 260 is arranged in the movable hole 231 in a penetrating manner and extends to the right side of the thread joint, a conductive plate 280 is arranged at the right end of the movable rod 260, a conductive joint 281 is; the junction box 300 is screwed on the external threaded joint 230, two power connection plates 330 are arranged on the inner wall of the junction box 300, the left sides of the two power connection plates 330 are connected with power connection contacts 331, the two power connection contacts 331 and the two conductive joints 281 are arranged at the same height in a clearance mode respectively, the two power connection plates 330 are connected with wires 320, and the two wires 320 extend out of the junction box 300 and are connected with an electromagnetic relay. The first flange 110 is flange-connected with the external pipeline, when there is pressure liquid in the liquid inlet pipe, the liquid will act on the arc sealing ring 240 in the liquid inlet pipe, the arc sealing ring 240 deforms to transmit the pressure to the push block 250, when the pressure is larger than the elastic force of the spring 261, the push block 250 will drive the push block 250 to move, the push block 250 will drive the movable rod 260 to move backwards, so that the conductive joint 281 on the conductive plate 280 contacts with the electric contact 331 on the electric plate 330, so that the conductive wire 320 is connected, at this time, the electromagnetic relay connected with the conductive wire 320 controls the circuit of the power control cabinet of the pump to be electrified according to the requirement, the controller has simple structure and low cost, is suitable for various flow pumps, and when there is no liquid pressure or the liquid pressure is too small in the liquid inlet pipe, the push block 250 has a distance with the junction box 300 under the elastic force of the spring 261, so as to avoid the conductive, the pump is prevented from being broken down due to air transportation of the pump, and environmental pollution caused by leakage of chemical liquid is avoided.

The controller can be designed into a mode that when liquid pressure exists in the liquid inlet pipe, the electromagnetic relay is electrified to enable the pump circuit to be started and the pump to work, or when liquid pressure exists in the liquid inlet pipe, the electromagnetic relay is electrified to trip and the pump is stopped, and the controller is installed according to actual use conditions.

Example 2

On the basis of implementation 1, please refer to fig. 1-7, the arc-shaped sealing ring 240 is made of corrosion-resistant rubber material, and may be made of fluororubber, the liquid inlet pipe fluoroplastic layer 130 is in clearance fit with the connecting pipe fluoroplastic layer 220, the outer wall of the arc-shaped sealing ring 240 is connected with an outer ring 241, two sides of the outer ring 241 are respectively abutted to the liquid inlet pipe fluoroplastic layer 130 and the connecting pipe fluoroplastic layer 220, the liquid inlet pipe fluoroplastic layer 130 and the connecting pipe fluoroplastic layer 220 can be made of materials available in the existing market, so that the controller is not damaged when the strong acid and strong alkali liquid corrodes the medium, and normal operation is ensured, the arc-shaped sealing ring 240 is provided with the outer ring 241 so that the arc-shaped sealing ring 240 is abutted.

Example 3

On the basis of implementation 1, please refer to fig. 1-7, a first mounting hole is formed at the right end of the movable rod 260, a first fixing screw 270 is screwed in the first mounting hole, the conductive plate 280 is arranged on the threaded column of the first fixing screw 270 in a penetrating manner, the left side wall and the right side wall of the conductive plate 280 are both connected with a first plastic liner 290, the first plastic liner 290 on the left side covers the outer wall on the left side of the conductive plate 280 and abuts against the right end of the movable rod 260, the first plastic liner 290 on the right side covers the outer wall on the right side of the conductive plate 280 and wraps the threaded column of the first fixing screw 270, the inner wall of the junction box 300 is provided with two second mounting holes, a second fixing screw 350 is screwed in the two second mounting holes, the two power connection plates 330 are arranged on the threaded columns of the two second fixing screws 350 in a penetrating manner, the right sides of the two power connection plates. The first and second fixing screws 270 and 350 allow the conductive plate 280 and the power receiving plate 330 to be stably coupled to the movable rod 260 and the inner wall of the junction box 300, thereby facilitating maintenance and repair of workers, and the first and second

plastic gaskets

290 and 340 function to separate the conductive plate 280 and the power receiving plate 330 from the movable rod 260 and wiring and isolation.

Example 4

On the basis of implementation 1, please refer to fig. 1-7, a terminal box 300 is provided with threading holes matched with two wires 320, rubber sleeves 310 are arranged in the two threading holes, the outer walls of the rubber sleeves 310 are fixedly connected with the inner walls of the threading holes, the inner walls of the rubber sleeves 310 are attached to the wires 320, the rubber sleeves 310 protect the wires 320, the wires 320 are prevented from being worn and broken by the threading holes in the pulling process, the service life of the wires 320 is prolonged, the normal work of a controller is ensured, and the occurrence of safety accidents due to incapability of conducting electricity is avoided.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A non-contact pressure controller for a pump, comprising:

the left side and the right side of the liquid inlet pipe are respectively and fixedly connected with a first flange plate and a second flange plate, the inner wall of the liquid inlet pipe is provided with a liquid inlet pipe fluoroplastic layer, and two ends of the liquid inlet pipe fluoroplastic layer extend outwards to be clamped with the first flange plate and the second flange plate;

a third flange plate is fixedly connected to the left side of the connecting pipe and fixedly connected with the second flange plate through bolts, the right side of the connecting pipe is fixedly connected with an external thread joint, a movable hole is arranged in the external thread joint and is communicated with the connecting pipe, the left side of the connecting pipe is provided with a connecting pipe fluoroplastic layer, the left side of the connecting pipe fluoroplastic layer is provided with an arc-shaped sealing ring, a push block is arranged in the connecting pipe, the left side of the push block is in an arc shape and is matched with the right side of the arc-shaped sealing ring, the right side of the push block is connected with a movable rod which is arranged in the movable hole in a penetrating way and extends to the right side of the threaded joint, the right end of the movable rod is provided with a conductive plate, the upper end and the lower end of the right side of the conductive plate are fixedly connected with a conductive joint, a spring is wound on the movable rod, the left end of the spring is abutted against the right side of the push block, and the right end of the spring is abutted against the inner wall of the left side of the external thread joint;

the junction box is in threaded connection with the external threaded connector in a threaded mode, two electricity connecting plates are arranged on the inner wall of the junction box, the left sides of the two electricity connecting plates are connected with electricity connecting contacts, the two electricity connecting contacts and the two conductive connectors are arranged on the same height in a clearance mode respectively, the two electricity connecting plates are connected with wires, and the two wires extend out of the junction box and are connected with an electromagnetic relay.

2. The non-contact pressure controller for pump according to claim 1, wherein the arc-shaped sealing ring is made of corrosion-resistant rubber material.

3. The non-contact pressure controller for pump according to claim 2, wherein the fluoroplastic layer of the inlet pipe is in clearance fit with the fluoroplastic layer of the connecting pipe, and the outer wall of the arc-shaped sealing ring is connected with an outer ring, and two sides of the outer ring are respectively abutted against the fluoroplastic layer of the inlet pipe and the fluoroplastic layer of the connecting pipe.

4. The non-contact pressure controller for the pump according to claim 1, wherein the right end of the movable rod is provided with a first mounting hole, a first fixing screw is screwed in the first mounting hole, and the conductive plate is inserted into a first fixing screw threaded column.

5. The non-contact pressure controller for pump according to claim 4, wherein the first plastic liner is connected to each of the left and right side walls of the conductive plate, the first plastic liner covers the outer wall of the left side of the conductive plate and abuts against the right end of the movable rod, and the first plastic liner covers the outer wall of the right side of the conductive plate and wraps the first fixing screw threaded post.

6. The non-contact pressure controller for the pump according to claim 5, wherein the inner wall of the junction box is provided with two second mounting holes, second fixing screws are screwed into the two second mounting holes, and the two power-on plates are inserted into the two second fixing screw threaded columns.

7. The non-contact pressure controller for pump according to claim 6, wherein a second plastic liner is connected to the right side of the two electric connection plates, and the second plastic liner covers the outer wall of the right side and abuts against the inner wall of the junction box.

8. The non-contact pressure controller for the pump according to claim 1, wherein the junction box is provided with threading holes matching with two wires, rubber sleeves are arranged in both the threading holes, outer walls of the rubber sleeves are fixedly connected with inner walls of the threading holes, and inner walls of the rubber sleeves are attached to the wires.