CN107588812A - A kind of type double flow meter for being available for water-softening plant salt-sucking port to use - Google Patents

Abstract

The invention discloses a kind of type double flow meter for being available for water-softening plant salt-sucking port to use, including flow meter body component；Flow meter body component includes flowmeter shell, two flowmeter current dividers are set in the middle part of flowmeter shell inner cavity, flowmeter current divider outer ring is fixed on flowmeter shell inner cavity wall, bushing is provided with flowmeter current divider inner ring, impeller is provided between two flowmeter current dividers, there is blade in circumference of impeller, be provided with magnet steel between two blades, impeller middle spindle both ends are penetrated in bushing；The magnetic induction probe of Hall element component is arranged on the flowmeter shell position corresponding with impeller；Water pipe, 90 ° of bent subs are connected by rapid connector component with flowmeter shell inner cavity end.The flowmeter can carry out accurate measurement to the water injection rate by control valve salt-sucking port and suction salt amount.

Description

A bi-directional flowmeter for the salt suction port of water softening equipment

technical field

The invention relates to soft water treatment equipment, in particular to a two-way flow meter which can be used at the salt suction port of the soft water equipment.

Background technique

The basic principle of soft water treatment equipment is to replace the calcium and magnesium ions in the water through the chemical reaction between resin and water, so as to soften the water. The resin can be recycled. When the resin fails, the salt water can be used to chemically react with the resin, so that the resin can regain its soft water function. This function of using salt water to make the resin have soft water again is called regeneration.

The control valve generally divides resin regeneration into the following steps: backwash, salt suction, forward wash and water injection. The function of backwashing is to recoil the resin from bottom to top, to disperse the resin, to prepare for the next step of salt absorption, so that the salt water and the resin can fully contact. The function of salt absorption is to suck the salt water into the resin tank to have a chemical reaction with the resin, so that the resin can regain its soft water function. Forward washing is the opposite of backwashing. The water flow compresses the resin from top to bottom, so that the water flow through the resin will slow down during the softening process, allowing the resin to soften the water more fully. Water injection refers to injecting water into the brine tank to dissolve salt and prepare for the next regeneration. Each regeneration consumes a certain amount of salt.

Soft water treatment equipment generally controls multiple water flows at the same time through control valves to achieve resin regeneration operations. The control valve is equipped with multiple pipeline connections, one of which is the salt suction port. During the salt suction operation, the control valve sucks the salt liquid in the brine tank into the pipeline of the control valve through the salt suction port, and then passes the control valve and The pipeline interface connected to the resin tank is injected into the resin tank. When injecting water, the pipeline flow path in the control valve is switched accordingly. The clean water is first passed into the inner tube of the control valve, and then injected into the salt tank through the salt suction port of the control valve.

At present, the salt suction port of the soft water treatment equipment control valve on the market is not equipped with a flowmeter. There are two main reasons: 1. The water flow rate at the salt suction port is generally relatively small, and it is difficult to meet the conditions for the flowmeter impeller to start; 2. Generally, The shaft of the impeller is fixed at a single point, and is inclined downward at a small angle by gravity. When the water flow passes, the impeller needs to be lifted upright by the water flow before it can start to rotate.

In order to measure the water injection volume, as shown in Figure 1, a rubber pad is generally installed on the salt suction port of the control valve. There is an opening in the center of the rubber pad, which can maintain a certain flow rate when the water flow passes through the middle of the hole. When the flow rate increases Then the rubber pad is deformed, the opening in the middle becomes smaller, and the water flow becomes slower. Then calculate the water injection amount by the time of water flow. This measurement method is fuzzy measurement with large deviation.

To sum up, the current soft water treatment equipment cannot effectively measure the water injection and salt absorption through the salt suction port of the control valve.

Contents of the invention

Purpose of the invention: The purpose of the present invention is to solve the existing technical problems and provide a two-way flowmeter that can be used for the salt suction port of the soft water equipment. The water injection volume and the salt suction volume of the salt suction port of the control valve can be accurately measured through the flow meter .

In order to achieve the above object, the present invention adopts the following technical solution: a bidirectional flowmeter for the salt suction port of water softening equipment, including a water pipe, a quick connector assembly, a Hall element assembly, a flowmeter main assembly, and a 90° elbow joint , flow meter bracket;

The main body assembly of the flowmeter includes a flowmeter casing, and two flowmeter shunts are arranged at intervals in the middle of the inner cavity of the flowmeter casing. The flowmeter shunt includes an inner ring and an outer ring, and the outer ring of the flowmeter shunt is fixed in the inner cavity of the flowmeter casing. On the wall, the outer ring and the inner ring of the flow meter splitter are connected by several ribs, a bushing is provided on the inner ring of the flow meter splitter, and an impeller is arranged between the two flow meter splitters, and the impellers are evenly distributed on the circumference. There are several blades, and magnetic steel is set between two adjacent blades, and the two ends of the central shaft of the impeller penetrate into the bushing;

The Hall element assembly includes a magnetic induction probe, and the magnetic induction probe is arranged at a position corresponding to the flowmeter housing and the impeller;

One end of the water pipe is connected to one end of the inner cavity of the flowmeter casing through a quick connector assembly, and the other end of the water pipe is connected to the salt tank of the water softening equipment;

One end of the 90° elbow joint is connected to the other end of the inner cavity of the flowmeter casing through a quick joint assembly, and the other end of the 90° elbow joint is connected to the salt suction port of the control valve of the water softening equipment;

The flowmeter bracket is used to support the flowmeter casing.

Further, the side of the inner ring of the flow meter diverter away from the impeller has an arc-shaped tapered surface.

Further, the central axis of the impeller is in clearance fit with the bushing, both ends of the central axis of the impeller are embedded in corundum, and the corundum is fixed on the inner wall of the bushing.

Further, the quick connector assembly includes a quick-connect housing and a guide sleeve. The tail end of the quick-connect housing is provided with an external threaded joint. Connected to the front end of the inner cavity of the housing, the lugs of the outer ring of the guide sleeve are inserted into the slots of the inner cavity wall of the housing, and the inner wall of the guide sleeve is provided with an undercut.

Further, an annular protrusion a is provided between the inner cavity of the quick-connect housing and the inner hole of the external threaded joint, and the inner hole of the external threaded joint is provided with a salt path diverter, which includes a shunt sleeve and a rubber gasket, and the shunt The sleeve is fixed on the wall of the inner hole of the externally threaded joint, one end of the shunt sleeve is tightly attached to the annular protrusion a, and the other end of the shunt sleeve is provided with an annular protrusion b, and an annular groove is formed between the annular protrusion b and the annular protrusion a. The rubber gasket is arranged in the annular groove, and gaps are left between the outer circle of the rubber gasket and the shunt sleeve, and between both sides of the rubber gasket and the annular protrusion a and the annular protrusion b.

Further, the bottom of the flowmeter shell is provided with a support seat, and the support seat is provided with a bracket slot along the longitudinal direction, the lower end of the flowmeter bracket is fixed, the upper end of the flowmeter bracket is inserted into the bracket slot, and the flowmeter bracket is longitudinally opened with a The adjustment groove, the bottom of the adjustment groove is provided with a through hole passing through the flowmeter bracket and the support seat along the horizontal direction, and the screw penetrates into the through hole and is locked by a nut.

The effect that this technical solution can achieve:

1. The starting flow rate of the flowmeter is small, which meets the measurement requirements of small water flow;

2. The amount of water injection and salt absorption can be measured by the flow meter, which is more accurate;

3. The two ends of the flowmeter are designed for quick connection. The installation method can realize quick connection, plug and play, and can realize the quick connection of the pipeline for liquid in and out, which can effectively improve assembly and production efficiency, save costs, and avoid the disadvantages of threaded connection. ;

4. With rubber gaskets of different apertures, different maximum flow rates can be achieved, and the measurement range is wide;

5. The water pipe assembled by quick connectors at both ends is a common pipe diameter, which can facilitate the transformation of existing equipment, and the transformation process is easy to operate, very convenient and fast;

6. The flowmeter device is small in size and can adapt to the situation where the installation space of the water softener is small.

Description of drawings

Fig. 1 is the schematic diagram of the structure of the salt suction port of the control valve of the existing soft water equipment;

Fig. 2 is the outline drawing of the bidirectional flowmeter that can be used in the salt suction port of the soft water equipment of the present invention;

Fig. 3 is the sectional view of the two-way flow meter that can be used in the salt suction port of the soft water equipment of the present invention;

Fig. 4 is a structural schematic diagram of the main assembly of the flowmeter;

Fig. 5 is the structural representation of impeller;

Figure 6 is a schematic diagram of the installation of the magnetic steel;

Fig. 7 is a structural schematic diagram of a quick connector assembly;

Figure 8 is a sectional view of the guide sleeve;

Figure 9 is an end view of the guide sleeve;

Figure 10 is a schematic diagram of the installation of the Hall element assembly and the flowmeter bracket;

Figure 11 is a schematic diagram of the installation of the flowmeter bracket.

In the figure: 1-control valve, 2-salt suction port, 3-water pipe, 4-quick connector assembly, 5-Hall element assembly, 6-flowmeter main assembly, 7-90° elbow joint, 8-flowmeter bracket , 4-1-quick connection shell, 4-2-guide sleeve, 4-3-pipe sealing ring, 4-4-flow meter sealing ring, 4-5-external threaded joint, 4-6-car ear, 4- 7-Undercut, 4-8-Ring raised part a, 5-1-Magnetic induction probe, 6-1-Flow meter shell, 6-2-Rubber gasket, 6-3-Shunt sleeve, 6-4-Flow meter Diverter, 6-5-corundum, 6-6-bush, 6-7-impeller, 6-8-magnetic steel, 6-9-blade, 6-10-ring boss b, 6-11-support Seat, 6-12-curved conical surface, 8-1-adjusting groove, 8-2-screw, 8-3-nut.

detailed description:

The present invention will be further explained below in conjunction with the accompanying drawings.

As shown in Figures 2 and 3, a bidirectional flowmeter of the present invention that can be used for the salt suction port of water softening equipment includes a water pipe 3, a quick connector assembly 4, a Hall element assembly 5, a flowmeter main assembly 6, and a 90° bend Connector 7, flowmeter bracket 8.

As shown in Figure 4-6, the flowmeter body assembly 6 includes a flowmeter housing 6-1, two flowmeter shunts 6-4 are arranged at intervals in the middle of the inner cavity of the flowmeter housing 6-1, and the flowmeter shunt 6- 4 includes an inner ring and an outer ring. The outer ring of the flowmeter shunt 6-4 is fixed on the inner cavity wall of the flowmeter housing 6-1 through an interference fit. Connected by several ribs, a bushing 6-6 is provided on the inner ring of the flowmeter diverter 6-4, and an impeller 6-7 is arranged between the two flowmeter diverters 6-4, and the circumference of the impeller 6-7 is uniform. Several blades 6-9 are arranged, and magnetic steel 6-8 is arranged between two adjacent blades 6-9, and the two ends of the central axis of the impeller 6-7 penetrate in the bushing 6-6.

The central shaft of the impeller 6-7 is made of stainless steel, and the two ends are spherical surfaces with very high roundness. There is a groove in the middle of the central shaft of the impeller 6-7. The impeller 6-7 is a plastic injection molded part. The plastics of the inner hole part of 7 are embedded in the impeller 6-7 central axis groove, can make impeller 6-7 and fix between the impeller 6-7 central axis, and impeller 6-7 can not axially move.

Preferably, the central shaft of the impeller 6-7 is in clearance fit with the bushing 6-6, the central shaft of the impeller 6-7 can rotate freely in the bushing 6-6, and the two ends of the central shaft of the impeller 6-7 are spherically embedded with corundum 6 In the arc groove of -5, the corundum 6-5 is fixed on the inner wall of the bush 6-6 through interference fit. Since the corundum 6-5 has the characteristics of high hardness and good wear resistance, the frictional force of the rotation of the central axis of the impeller 6-7 is very small, and the service life of the main assembly 6 of the flowmeter can be greatly improved.

When the water flow passes through the annular channel between the inner ring and the outer ring of the flow meter flow divider 6-4, it can push the blade 6-9 and the impeller 6-7 to rotate. In order to reduce the resistance of the water flow inside the main assembly 6 of the flow meter, The inner ring of the flowmeter flow divider 6-4 has an arc-shaped conical surface 6-12 on the side away from the impeller 6-7, so that the water flow can be dispersed into a uniform ring under the guidance of the arc-shaped conical surface 6-12 Shaped water flow, and then flows through the blades 6-9, minimizing the loss of water flow energy inside the flowmeter main assembly 6. Therefore, the volume of the whole impeller 6-7 can be made very small, less than half of the existing impeller.

As shown in FIGS. 2 and 10 , the Hall element assembly 5 includes a magnetic induction probe 5 - 1 , and the magnetic induction probe 5 - 1 is arranged at a position corresponding to the flowmeter casing 6 - 1 and the impeller 6 - 7 .

The magnetic steel 6-8 has metal magnetic parts, which can realize the counting function by cooperating with the magnetic induction probe 5-1. The magnets 6-8 have a large mass, and the general flowmeter has a large volume, and the distance between the impeller and the shaft center is also relatively large. In order to ensure that it can be detected by the Hall element 5, the magnets can only be placed as close to the edge of the impeller as possible. And the volume of the impeller 6-7 of this flow meter is smaller, and the distance between the impeller 6-7 and the central axis is also smaller, which ensures that the magnetic steel 6-8 is within the detection range of the magnetic induction probe 5-1, so that the impeller 6-7 is started. 7 The starting moment of rotation will be relatively small, and the requirement for water flow is relatively small.

As shown in Figures 2, 7, 8, and 9, one end of the water pipe 3 is connected to one end of the inner cavity of the flowmeter housing 6-1 through the quick connector assembly 4, and the other end of the water pipe 3 is connected to the salt tank of the water softener; the 90° One end of the elbow joint 7 is connected to the other end of the inner cavity of the flowmeter housing 6-1 through the quick joint assembly 4, and the other end of the 90° elbow joint 7 is connected to the salt suction port of the control valve of the water softening equipment.

In this embodiment, the quick connector assembly 4 includes a quick connector housing 4-1 and a guide sleeve 4-2. The tail end of the quick connector housing 4-1 is provided with an external thread joint 4-5, and the external thread joint 4-5 is connected to the The inner screw ports at both ends of the inner cavity of the flowmeter housing 6-1 are tightened, the guide sleeve 4-2 is inserted into the front end of the inner cavity of the quick-connect housing 4-1, and the lug 4-6 of the outer ring of the guide sleeve 4-2 is inserted into the housing 4-1 In the slot of the inner cavity wall, the inner wall of the guide sleeve 4-2 is provided with an undercut 4-7. The guide sleeve 4-2, the lug 4-6, and the undercut 4-7 are made of metal, and the three can be integrally formed by metal injection through injection molding. Figure 7 shows the connection state of the water pipe 3 and the quick connector assembly 4. Insert the end of the water pipe 3 into the guide sleeve 4-2 and extend to the inner cavity of the quick connector housing 4-1. The undercut 4-7 can prevent the water pipe 3 from Guide sleeve 4-2 slips off, and when the power of pulling water pipe 3 is bigger, the gripping force of undercut 4-7 to water pipe 3 is bigger, and water pipe 3 is more difficult to break away from. The 90° elbow joint 7 is also connected to the guide sleeve 4-2 of the quick joint assembly 4 in the same assembly manner.

In order to ensure the tightness of the flowmeter, there are water pipes between the outer circle of the water pipe 3 and the inner cavity wall of the quick-connect housing 4-1, and between the outer circle of the 90° elbow joint 7 and the inner cavity wall of the quick-connect housing 4-1. The sealing ring 4-3 is provided with a flowmeter sealing ring 4-4 on the outer circle of the external thread joint 4-5.

As shown in Figures 4 and 7, an annular protrusion a4-8 is provided between the inner cavity of the quick-connect housing 4-1 and the inner hole of the external threaded joint 4-5, and a salt is provided in the inner hole of the external threaded joint 4-5. The shunt for the salt road and the shunt for the salt road include a shunt sleeve 6-3 and a rubber gasket 6-2. The shunt sleeve 6-3 is fixed on the inner hole wall of the external thread joint 4-5 through an interference fit, and one end of the shunt sleeve 6-3 Close to the annular protrusion a4-8, the other end of the shunt sleeve 6-3 is provided with an annular protrusion b6-10, an annular groove is formed between the annular protrusion b6-10 and the annular protrusion a4-8, and a rubber gasket 6-2 is set in the annular groove, between the outer circle of the rubber gasket 6-2 and the shunt sleeve 6-3, between both sides of the rubber gasket 6-2 and the annular protrusion a4-8, and the annular protrusion b6-10 There are gaps.

What rubber gasket 6-2 is rubber material, there is a circular hole in the middle. The rubber washer 6-2 can move axially and radially in the annular groove. When water flows through, the rubber washer 6-2 is pushed towards the impeller 6-7 and pressed against the annular protrusion b6-10. The sealing effect makes the water flow only pass through the middle circular hole, and the maximum flow rate of the flowmeter can be controlled by the aperture of the rubber washer 6-2.

As shown in Figures 10 and 11, the flowmeter bracket 8 is used to support the flowmeter casing 6-1. In this embodiment, the bottom of the flowmeter housing 6-1 is provided with a support seat 6-11, and the support seat 6-11 is provided with a bracket slot along the longitudinal direction, the lower end of the flowmeter bracket 8 is fixed, and the upper end of the flowmeter bracket 8 is snapped into the bracket In the card slot, an adjustment groove 8-1 is provided longitudinally on the flowmeter bracket 8, and a through hole through the flowmeter bracket 8 and the support seat 6-11 is opened at the bottom of the adjustment groove 8-1 along the horizontal direction, and the screw 8-2 Insert it into the through hole and lock it with the nut 8-3. After the nut 8-3 is loosened, the upper end of the flowmeter bracket 8 and the support seat 6-11 slide up and down along the bracket slot to facilitate adjustment of the height of the supporting flowmeter housing 6-1.

The assembly steps of the flowmeter are as follows:

Assembling the main part of the flowmeter: put the corundum 6-5 into the bushing 6-6, put the bushing 6-6 into the inner ring of the flowmeter shunt 6-4, and insert one of the flowmeter shunts 6-4 into the flowmeter In the housing 6-1, put one end of the central shaft of the impeller 6-7 into the inner ring bushing 6-6 of the flowmeter flow divider 6-4, and insert another flowmeter flow divider 6-4 into the flowmeter casing 6- 1, and put the other end of the central shaft of the impeller 6-7 into the inner ring bushing 6-6 of the flowmeter flow divider 6-4;

Assembling the quick joint assembly 4: put the water pipe sealing ring 4-3 into the inner cavity of the quick connecting housing 4-1, insert the guide sleeve 4-2, and set the flow meter sealing ring 4-4 on the outer circle of the external thread joint 4-5 , and then plug the salt road shunt into the inner hole of the external threaded joint 4-5,

General assembly: Tighten the external threaded joints 4-5 of the two quick connector assemblies 4 with the inner screw ports at both ends of the inner chamber of the flowmeter housing 6-1; then insert the water pipe 3 into the guide sleeve 4-5 of the quick connector assembly 4 2, fix the flowmeter housing 6-1 on the flowmeter bracket 8, insert the 90° elbow joint 7 into the guide sleeve 4-2 of the quick joint assembly 4, and connect the 90° elbow joint 7 to the soft water equipment control through the external pipeline Salt suction port of the valve.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, some improvements and modifications can be made without departing from the principle of the present invention. It should be regarded as the protection scope of the present invention.

Claims (6)

1. A bidirectional flowmeter that can be used at the salt suction port of water softening equipment, characterized in that it includes a water pipe (3), a quick connector assembly (4), a Hall element assembly (5), a flowmeter main assembly (6), 90° elbow joint (7), flow meter bracket (8); The flowmeter body assembly (6) includes a flowmeter housing (6-1), two flowmeter shunts (6-4) are arranged at intervals in the inner cavity of the flowmeter casing (6-1), and the flowmeter shunts (6-4) -4) Including the inner ring and the outer ring, the outer ring of the flowmeter shunt (6-4) is fixed on the wall of the inner cavity of the flowmeter housing (6-1), the outer ring of the flowmeter shunt (6-4) and the inner ring They are connected by several ribs, a bushing (6-6) is provided on the inner ring of the flow meter splitter (6-4), and an impeller (6-6) is arranged between the two flow meter splitters (6-4). 7), there are several blades (6-9) evenly distributed on the circumference of the impeller (6-7), and a magnetic steel (6-8) is arranged between two adjacent blades (6-9), and the impeller (6- 7) Both ends of the central shaft penetrate into the bushing (6-6); The Hall element assembly (5) includes a magnetic induction probe (5-1), and the magnetic induction probe (5-1) is arranged at a position corresponding to the flowmeter casing (6-1) and the impeller (6-7); One end of the water pipe (3) is connected to one end of the inner cavity of the flowmeter housing (6-1) through a quick connector assembly (4), and the other end of the water pipe (3) is connected to the salt tank of the water softening equipment; One end of the 90° elbow joint (7) is connected to the other end of the inner cavity of the flowmeter casing (6-1) through the quick joint assembly (4), and the other end of the 90° elbow joint (7) is connected to the salt suction port of the control valve of the water softening equipment connected; The flowmeter bracket (8) is used to support the flowmeter casing (6-1). 2. A bi-directional flowmeter that can be used at the salt suction port of water softening equipment according to claim 1, characterized in that: the inner ring of the flowmeter diverter (6-4) is far away from one of the impellers (6-7). The sides have curved tapered surfaces (6-12). 3. A bidirectional flowmeter for the salt suction port of water softening equipment according to claim 1, characterized in that: the central axis of the impeller (6-7) is in clearance fit with the bushing (6-6), and the impeller (6-7) Both ends of the central shaft are embedded in the corundum (6-5), and the corundum (6-5) is fixed on the inner wall of the bushing (6-6). 4. A bidirectional flowmeter for the salt suction port of water softening equipment according to claim 1, characterized in that: the quick connector assembly (4) includes a quick connector housing (4-1), a guide sleeve (4 -2), the tail end of the quick-connect housing (4-1) is provided with an external threaded joint (4-5), and the external threaded joint (4-5) is connected to the internal screw ports at both ends of the inner chamber of the flowmeter housing (6-1) Cooperate and tighten, the guide sleeve (4-2) is inserted into the front end of the inner cavity of the quick-connect housing (4-1), and the lug (4-6) on the outer ring of the guide sleeve (4-2) is snapped into the housing (4-1) In the slot of the inner cavity wall, the inner wall of the guide sleeve (4-2) is provided with an undercut (4-7). 5. A bidirectional flowmeter for the salt suction port of water softening equipment according to claim 4, characterized in that: the inner cavity of the quick-connect housing (4-1) is connected to the inner cavity of the external threaded joint (4-5). An annular protrusion a (4-8) is provided between the holes, and a salt path shunt is arranged in the inner hole of the external threaded joint (4-5). The salt path shunt includes a shunt sleeve (6-3) and a rubber gasket (6 -2), the shunt sleeve (6-3) is fixed on the wall of the inner hole of the externally threaded joint (4-5), one end of the shunt sleeve (6-3) is close to the annular protrusion a (4-8), the shunt sleeve (6 -3) The other end is provided with an annular protrusion b (6-10), an annular groove is formed between the annular protrusion b (6-10) and the annular protrusion a (4-8), and the rubber gasket (6- 2) Set in the annular groove, between the outer circle of the rubber gasket (6-2) and the shunt sleeve (6-3), the two sides of the rubber gasket (6-2) and the annular protrusion a (4-8), the annular There are gaps between the raised parts b (6-10). 6. A bidirectional flowmeter for the salt suction port of water softening equipment according to claim 1, characterized in that: the bottom of the flowmeter casing (6-1) is provided with a support seat (6-11), supporting The seat (6-11) is longitudinally provided with a bracket slot, the lower end of the flowmeter bracket (8) is fixed, the upper end of the flowmeter bracket (8) is inserted into the bracket slot, and the flowmeter bracket (8) is longitudinally provided with an adjustment Groove (8-1), the bottom of the adjustment groove (8-1) is provided with a through hole through the flowmeter bracket (8) and the support seat (6-11) along the horizontal direction, and the screw (8-2) penetrates into the through hole And lock it through the nut (8-3).