CN220303620U - Liquid flow supply device with mechanical flow control mechanism - Google Patents

Abstract

The utility model discloses a liquid flow supply device with a mechanical flow control mechanism, which is applied to steam equipment, wherein a water tank and a steam generator are arranged in the steam equipment; the liquid flow supply device includes: a water pump for delivering the flow of water in the water tank to the steam generator; the flow limiting component is arranged between the water pump and the steam generator and used for adjusting the flow rate of the liquid from the water pump to the steam generator, and at least one liquid flow channel is arranged in the flow limiting component and used for reducing the flow rate of the liquid flow passing through the liquid flow channel. According to the technical scheme, the liquid flow can be reduced, the small-flux supply with different specifications is obtained, intermittent water supply is not needed to be carried out according to the design of the electromagnetic valve of the water pump, meanwhile, the running load of the water pump can be effectively reduced, and the service life and the performance stability of the water pump are guaranteed.

Description

Liquid flow supply device with mechanical flow control mechanism

Technical Field

The utility model relates to the technical field of internal components of steam equipment, in particular to a liquid flow supply device with a mechanical flow control mechanism.

Background

The water in the water tank is pumped into the steam generator, usually by a water pump, to be vaporized in the vaporization chamber of the steam generator. However, for small-sized steam equipment, when the flow is lower than 20g/min, the frequency of the water pumping frequency of the water pump is generally required to be reduced in a frequency conversion mode, so that the purpose of low flow is achieved, the flow error is larger after frequency conversion, and for the equipment with the flow lower than 10g/min, the frequency conversion of the water pump is difficult to realize.

Disclosure of Invention

The present utility model is directed to a liquid flow supply device for achieving the purpose of controlling a liquid flow by using a flow control mechanism with a mechanical structure, which is used for overcoming at least one of the above-mentioned technical drawbacks.

The specific technical scheme is as follows:

a liquid flow supply device with a mechanical flow control mechanism is applied to a steam device, and the steam device is internally provided with a water tank and a steam generator; the liquid flow supply device includes:

a water pump for delivering the flow of water in the water tank to the steam generator;

the flow limiting component is arranged between the water pump and the steam generator and used for adjusting the flow rate of the liquid from the water pump to the steam generator, and at least one liquid flow channel is arranged in the flow limiting component and used for reducing the flow rate of the liquid flow passing through the liquid flow channel.

Preferably, the liquid flow supply device further comprises a return pipe, wherein two ends of the return pipe are respectively communicated with the water outlet end of the water pump and the water inlet end of the water pump, and liquid flow is allowed to flow back to the water inlet end of the water pump in a unidirectional way through the water outlet end of the water pump, so that the running load of the water pump is reduced.

Preferably, the flow limiting member is a flow stabilizing valve, the flow stabilizing valve comprises a valve body with a cavity formed therein, a valve core accommodated in the cavity and capable of moving back and forth, an elastic member for resetting the valve core, and a liquid flow channel communicated with a liquid flow inlet and a liquid flow outlet of the flow limiting member is formed in the cavity; the liquid flow channel comprises a water passing port which is defined by the inner wall of the cavity and the outer edge of the valve core, and the valve core can move back and forth under the combined action of liquid flow water pressure and the elastic component so as to change the liquid flow flux of the water passing port.

Preferably, the cavity comprises a diversion cavity with gradually reduced inner diameter in the back-to-front direction, the valve core comprises a push plate part accommodated in the diversion cavity, and a water passing port is formed between the outer edge of the push plate part and the inner wall of the diversion cavity;

the push plate part has a first state in which the rear end face closes the liquid flow inlet and a second state in which the push plate part moves forward and backward under the combined action of the liquid flow pressure and the elastic member, and the liquid flow rate of the water passing port is reduced when the push plate part moves in the backward-to-forward direction.

Preferably, the cavity further comprises a mounting cavity positioned at the front side of the diversion cavity, the valve core comprises a tubular part arranged at the front end of the push plate part, and at least part of the tubular part can be accommodated in the mounting cavity in a front-back movable way;

the tubular part is internally provided with a first channel communicated with the liquid outlet, and the wall of the tubular part is also provided with at least one valve core hole communicated with the first channel and the diversion cavity and allows liquid to flow to the liquid outlet through the liquid inlet, the water passing port, the valve core hole and the first channel in sequence.

Preferably, the flow stabilizing valve further comprises a water inlet end cover, wherein the water inlet end cover is provided with a second channel used as a liquid flow inlet, and in the first state, the rear end face of the push plate part abuts against the front end face of the water inlet end cover and closes the front end opening of the second channel.

Preferably, the flow limiting member is a flow limiter, the front end and the rear end of the flow limiter are respectively provided with a water outlet channel serving as a liquid outlet and a water inlet channel serving as a liquid inlet, at least one liquid flow channel communicated with the water inlet channel and the water outlet channel is also arranged in the flow limiter, and the cross section area of all the liquid flow channels is smaller than the cross section area of any position of the water inlet channel so that the liquid flow in the water outlet channel is smaller than the liquid flow in the water inlet channel.

Preferably, a partition plate is arranged between the water inlet channel and the water outlet channel, and at least one through hole serving as a liquid flow channel is formed in the partition plate.

Preferably, the liquid flow supply device further comprises a first three-way pipe and a second three-way pipe, wherein the rear end of the first three-way pipe is used as a water inlet, the front end of the first three-way pipe is connected with the water inlet end of the water pump, the front end and the rear end of the second three-way pipe are respectively connected with the liquid flow inlet of the flow limiting component and the water outlet end of the water pump, the liquid inlet of the return pipe is connected to the lateral outlet of the second three-way pipe, and the liquid outlet of the return pipe is connected to the lateral inlet of the first three-way pipe.

Preferably, the lateral outlet of the second tee is connected to the return pipe via a check valve for allowing unidirectional return of the flow from the lateral outlet of the second tee to the lateral inlet of the first tee.

Preferably, the elastic member is a spring sleeved on the periphery of the tubular portion, and the spring is at least partially accommodated in the mounting cavity and abuts against the push plate portion.

The beneficial effects of the technical scheme are that:

(1) The liquid flow supply device with the mechanical flow control mechanism comprises a water pump, a flow limiting component and a return pipe, wherein the flow limiting component can reduce the flow of the flowing liquid flow, so that the purpose that the water pump which can not make small flow obtains small-flow supply of different specifications through the flow limiting component of the mechanical structure is met, intermittent water supply is not needed to be carried out according to the design electromagnetic valve of the water pump, and the structure is simple and easy to realize.

(2) The design of the return pipe can effectively reduce the running load of the water pump, and ensure the service life and performance stability of the water pump.

Drawings

FIG. 1 is a half cross-sectional view of a first embodiment of a fluid supply apparatus having a mechanical flow control mechanism according to the present utility model;

FIG. 2 is a half cross-sectional view of a portion of the flow control mechanism of FIG. 1;

FIG. 3 is a schematic flow diagram of a first embodiment of a flow control device having a mechanical flow control mechanism according to the present utility model;

FIG. 4 is a half cross-sectional view of a second embodiment of a fluid supply apparatus having a mechanical flow control mechanism according to the present utility model;

FIG. 5 is a half cross-sectional view of the flow control mechanism portion of FIG. 4;

FIG. 6 is a schematic illustration of another configuration of a flow restricting member in a second embodiment of a fluid supply apparatus having a mechanical flow control mechanism in accordance with the present utility model.

Detailed Description

In order to make the technical means, the creation features, the achievement of the purpose and the effect of the present utility model easy to understand, the present utility model is specifically described below with reference to the accompanying drawings. And defines the left-to-right direction as depicted in the page of fig. 2 as the back-to-front direction in this embodiment. And the arrow direction shown in fig. 3 is the water flow direction.

In a first embodiment of the present utility model,

referring to fig. 1 to 3, the liquid flow supply device with a mechanical flow control mechanism provided in the present embodiment is applied to a steam apparatus, and the steam apparatus has a water tank and a steam generator 10; wherein the liquid flow supply device comprises:

a water pump 4 for delivering the flow of water in the water tank to a steam generator 10;

a flow limiting member arranged between the water pump 4 and the steam generator 10 for adjusting the flow rate from the water pump 4 to the steam generator 10, wherein the flow limiting member has at least one flow channel with adjustable or non-adjustable flow rate therein, and the flow rate of the liquid passing through the flow channel is reduced.

Meanwhile, the liquid flow supply device may further include a return pipe 6, two ends of the return pipe 6 are respectively connected to the water outlet end of the water pump 4 and the water inlet end of the water pump 4, and allow the liquid flow to return to the water inlet end of the water pump 4 in a unidirectional manner through the water outlet end of the water pump 4, so as to reduce the operation load of the water pump 4.

In a specific application, after the water pump 4 is started, the liquid flow (water) stored in the water tank is pumped by the water pump 4 and conveyed to the direction of the steam generator 10 through the flow limiting component, the flow limiting component plays a role in reducing the flow rate of the liquid flow, can play a role in blocking flow, and can enable part of the liquid flow to be conveyed to the steam generator 10 at the same time, at the moment, under the action of water pressure, the return pipe 6 plays a role, and the part of the liquid flow flows back to the water inlet end of the water pump 4 through the return pipe 6, so that the running load of the water pump 4 is reduced, and the service life and the performance stability of the water pump 4 are guaranteed. And the return pipe 6 may be optional for water pumps of different flow rates, not limited thereto.

Based on the above technical scheme, the liquid flow supply device with mechanical flow control mechanism includes water pump 4, restriction member can reduce the liquid flow that flows through to satisfy the water pump 4 that can't make little flux and obtain the little flux supply of different specifications through the restriction member of mechanical structure, need not to additionally to correspond to water pump 4 design solenoid valve and carry out intermittent water supply, the structure is succinct and easy to realize, and the design of back flow 6 can effectively reduce the operation load of water pump 4 simultaneously, guarantee water pump 4 life-span and performance stability.

In a preferred embodiment, as shown in fig. 1 and 2 in particular, the liquid flow supply device further comprises a first tee 7 and a second tee 5, wherein the rear end 701 of the first tee 7 is used as a water inlet and the front end 702 is connected to the water inlet end of the water pump 4, the front and rear ends (502 and 501) of the second tee 5 are respectively connected to the liquid flow inlet of the flow limiting member and the water outlet end of the water pump 4, the liquid inlet 602 of the return pipe 6 is connected to the lateral outlet 503 of the second tee 5, and the liquid outlet 601 of the return pipe 6 is connected to the lateral inlet 703 of the first tee 7, thereby achieving the above-mentioned pipe connection.

In a preferred embodiment, as shown in fig. 2, the flow limiting member is a flow stabilizing valve 1, and the flow stabilizing valve 1 comprises a valve body 102 with a cavity formed therein, a valve core accommodated in the cavity and capable of moving back and forth, and an elastic member 103 for resetting the valve core, and a liquid flow channel communicated with a liquid flow inlet and a liquid flow outlet of the flow limiting member is formed in the cavity; the liquid flow channel comprises a water passing port 105 which is defined by the inner wall of the cavity and the outer edge of the valve core, and the valve core can move back and forth under the combined action of the liquid flow water pressure and the elastic component 103 so as to change the liquid flow flux of the water passing port 105.

As a further preferred embodiment, the cavity comprises a diversion cavity 106 with an inner diameter gradually reduced from back to front, the valve core comprises a push plate portion 1041 accommodated in the diversion cavity 106, and the gap 105 is formed between the outer edge of the push plate portion 1041 and the inner wall of the diversion cavity 106; the push plate portion 1041 has a first state in which the rear end surface closes the liquid flow inlet and a second state in which the liquid flow pressure and the elastic member 103 move forward and backward together, and when the push plate portion 1041 moves in the backward-forward direction, the liquid flow flux of the water passing port 105 is reduced.

In a specific application, when a liquid flow (i.e. water) is pumped into the liquid flow inlet by the water pump 4, the push plate portion 1041 is shifted from the first state to the second state under the action of the liquid flow water pressure, corresponding to forward movement, at this time, the water inlet is gradually narrowed, corresponding to reducing the passing liquid flow, and the elastic member 103 has a pre-tightening force for urging the push plate portion 1041 to return to the first state, so that a balance can be achieved to ensure that the water passing port 105 is not completely closed, and after the water pump 4 stops running, the water pressure is not generated at the rear end of the push plate portion 1041, and the push plate portion 1041 returns to the first state under the action of the elastic member 103.

As a further preferred embodiment, the cavity further comprises a mounting cavity located at the front side of the diversion cavity 106, the valve core comprises a tubular portion 104 arranged at the front end of the push plate portion 1041, and the tubular portion 104 is at least partially accommodated in the mounting cavity in a back and forth movable manner; the tubular portion 104 has a first channel 1043 therein, which is connected to the fluid outlet, and the wall of the tubular portion 104 has at least one valve core hole 1042, which is connected to the first channel 1043 and the diversion cavity 106, and allows the fluid to flow to the fluid outlet through the fluid inlet, the water outlet 105, the valve core hole 1042, and the first channel 1043 in sequence.

The elastic member 103 is a spring that is sleeved on the outer periphery of the tubular portion 104, and the spring is at least partially accommodated in the installation cavity and abuts against the push plate portion 1041 to achieve the above-mentioned purpose, but the elastic member 103 may be another member such as an elastic column, and the above-mentioned purpose can be achieved by pushing a protrusion designed on the outer periphery of the tubular portion 104. In addition, the front end of the water inlet end cover 101 is connected into the cavity of the valve body 102 and is locked by the lock catch 1012.

In a preferred embodiment, as shown in fig. 2, the flow stabilizing valve 1 further includes a water inlet end cover 101, the water inlet end cover 101 has a second channel 1011 therein for being a fluid inlet as described above, and in the first state, the rear end surface of the push plate portion 1041 abuts against the front end surface of the water inlet end cover 101 and closes the front end opening of the second channel 1011, so that the second channel 1011 is isolated from the diversion cavity 106, and after the water pump 4 is operated, the push plate portion 1041 is converted into the second state, the push plate portion 1041 no longer closes the front end opening of the second channel 1011, and fluid can flow to the diversion cavity 106.

As a further preferred embodiment, as shown in connection with fig. 1 and 3, the lateral outlet 503 of the second tee 5 is connected to the return pipe 6 via a non-return valve 3 for allowing a unidirectional return of the flow from the lateral outlet 503 of the second tee 5 to the lateral inlet 703 of the first tee 7. Furthermore, a check valve may be further designed between the lateral inlet 703 of the first tee 7 and the return pipe 6 to further enhance the purpose of backflow prevention, but in practical application, the check valve or even the check valve may be omitted without affecting the practical application because the water pressure at the inlet of the return pipe 6 is greater than the water pressure at the outlet of the return pipe 6, but it is obvious that the effect is better after the check valve 3 is designed, so the utility model is not limited thereto.

In particular applications, the liquid flow is based on the above-mentioned manner to the liquid flow outlet of the flow-limiting member, which is connected to the water outlet seat 9 by a sleeve pipe 8, and the liquid flow is further input into the vaporization chamber of the steam generator 10 through the water outlet seat 9, and for the small-sized vaporization device mentioned in the scheme, the water flow entering the vaporization chamber in unit time can be ensured not to be too large after the liquid flow is reduced, so that vaporization can be more sufficient, and the primary vaporization process in the vaporization chamber is not too low to influence the subsequent vaporization process and the purity of the output steam.

In a second embodiment of the present utility model,

referring to fig. 4 to 6, the present embodiment provides a fluid supply device with a mechanical flow control mechanism, which is substantially identical to the first embodiment, and is different from the first embodiment in that, in the present embodiment, the flow-limiting member is a flow-limiting member 2, the front and rear ends of the flow-limiting member 2 are respectively configured with a water outlet channel 203 serving as a fluid outlet and a water inlet channel 201 serving as a fluid inlet, at least one fluid channel communicating with the water inlet channel 201 and the water outlet channel 203 is further configured in the flow-limiting member 2, and the cross-sectional area of all the fluid channels is smaller than the cross-sectional area of any position of the water inlet channel 201, so that the fluid flow in the water outlet channel 203 is smaller than the fluid flow in the water inlet channel 201, i.e. the fluid flow is reduced after flowing into the water outlet channel 203 through the fluid channel.

In a preferred embodiment, in this embodiment, a partition is disposed between the water inlet channel 201 and the water outlet channel 203, and at least one through hole 202 is formed in the partition as a fluid channel to achieve the above purpose.

It is apparent that, as shown in fig. 5, in the present embodiment, the water inlet channel 201 and the water outlet channel 203 are all pipes with uniform inner diameters in the front-rear direction, and the number of the liquid flow channels is one, which is the most concise and practical structure, but in practical application, the number of the liquid flow channels can be designed to be multiple, uniformly or non-uniformly arranged on the partition plate, further, the water inlet channel 201 and the water outlet channel 203 can be designed to be two flared pipes facing away from each other, or wavy pipes, the former can raise the water pressure and reduce the water pressure after passing through the liquid flow channels, and the latter can also play a role of noise reduction, and both meet the technical requirements of the present embodiment. Still further, as shown in fig. 6, the restrictor 2 may be designed as an integral tube with a gradually decreasing and then gradually increasing inner diameter, and the position with the smallest inner diameter is used as a flow channel, which can achieve the above-mentioned technical object, but is not limited thereto.

The foregoing description of the preferred embodiment of the utility model is merely illustrative of the utility model and is not intended to be limiting. It will be appreciated by persons skilled in the art that many variations, modifications, and even equivalents may be made thereto without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (10)

1. A liquid flow supply device with a mechanical flow control mechanism is applied to a steam device, wherein the steam device is internally provided with a water tank and a steam generator (10); characterized in that the liquid flow supply device comprises:

a water pump (4) for delivering a flow of liquid in the tank to the steam generator (10);

a flow limiting member arranged between the water pump (4) and the steam generator (10) for regulating the flow rate of the liquid from the water pump (4) to the steam generator (10), and having at least one liquid flow channel therein, and reducing the flow rate of the liquid passing through the liquid flow channel.

2. A liquid flow supply device with a mechanical flow control mechanism according to claim 1, characterized in that the liquid flow supply device further comprises a return pipe (6), both ends of the return pipe (6) are respectively communicated to the water outlet end of the water pump (4) and the water inlet end of the water pump (4), and liquid flow is allowed to flow back to the water inlet end of the water pump (4) in one way via the water outlet end of the water pump (4) for reducing the operation load of the water pump (4).

3. A liquid flow supply device with a mechanical flow control mechanism according to claim 2, characterized in that the flow limiting member is a flow stabilizing valve (1), the flow stabilizing valve (1) comprises a valve body (102) having a cavity formed therein, a valve core accommodated in the cavity movably back and forth, an elastic member (103) for causing the valve core to return, and a liquid flow channel communicating with a liquid flow inlet and a liquid flow outlet of the flow limiting member is formed in the cavity; and the liquid flow channel comprises a water passing port (105) which is formed by the inner wall of the cavity and the outer edge of the valve core, and the valve core can move back and forth under the combined action of liquid flow water pressure and the elastic component (103) so as to change the liquid flow flux of the water passing port (105).

4. A liquid flow supply device with a mechanical flow control mechanism according to claim 3, characterized in that the chamber includes a diversion chamber (106) having an inner diameter gradually decreasing in a back-to-front direction, the valve core includes a push plate portion (1041) accommodated in the diversion chamber (106), and a space between an outer edge of the push plate portion (1041) and an inner wall of the diversion chamber (106) serves as the water passing port (105);

the push plate portion (1041) has a first state in which a rear end surface closes the liquid flow inlet and a second state in which the liquid flow pressure and the elastic member (103) move forward and backward together, and when the push plate portion (1041) moves in a backward-to-forward direction, the liquid flow flux of the water passing port (105) is reduced.

5. The fluid supply device with mechanical flow control mechanism according to claim 4, wherein the chamber further comprises a mounting chamber located at a front side of the diversion chamber (106), the valve core comprises a tubular portion (104) disposed at a front end of the push plate portion (1041), and the tubular portion (104) is at least partially movably received in the mounting chamber back and forth;

the tubular part (104) is internally provided with a first channel (1043) communicated with the liquid outlet, the wall of the tubular part (104) is also provided with at least one valve core hole (1042) communicated with the first channel (1043) and the diversion cavity (106), and liquid flow is allowed to flow to the liquid outlet through the liquid inlet, the water outlet (105), the valve core hole (1042) and the first channel (1043) in sequence.

6. The liquid flow supply apparatus with a mechanical flow control mechanism according to claim 5, wherein the flow stabilizing valve (1) further includes a water inlet end cap (101), the water inlet end cap (101) has a second passage (1011) therein for the liquid flow inlet, and in the first state, a rear end face of the push plate portion (1041) abuts against a front end face of the water inlet end cap (101) and closes a front end opening of the second passage (1011).

7. The liquid flow supply device with a mechanical flow control mechanism according to claim 1, wherein the flow limiting member is a flow limiter (2), a water outlet channel (203) serving as a liquid flow outlet and a water inlet channel (201) serving as a liquid flow inlet are respectively formed at the front end and the rear end of the flow limiter (2), at least one liquid flow channel which is communicated with the water inlet channel (201) and the water outlet channel (203) is also formed in the flow limiter (2), and the cross-sectional area of all the liquid flow channels is smaller than the cross-sectional area of any position of the water inlet channel (201) so that the liquid flow flux in the water outlet channel (203) is smaller than the liquid flow flux in the water inlet channel (201).

8. The liquid flow supply apparatus with mechanical flow control mechanism according to claim 7, wherein a partition plate is provided between the water inlet channel (201) and the water outlet channel (203), and at least one through hole (202) is provided in the partition plate as the liquid flow channel.

9. A liquid flow supply device with a mechanical flow control mechanism as claimed in claim 3, characterized in that the liquid flow supply device further comprises a first tee pipe (7) and a second tee pipe (5), a rear end (701) of the first tee pipe (7) is used as a water inlet and a front end (702) is connected with a water inlet end of the water pump (4), a front end and a rear end of the second tee pipe (5) are respectively connected with a liquid flow inlet of the flow limiting member and a water outlet end of the water pump (4), a liquid inlet (602) of the return pipe (6) is connected with a lateral outlet (503) of the second tee pipe (5), and a liquid outlet (601) of the return pipe (6) is connected with a lateral inlet (703) of the first tee pipe (7).

10. A liquid flow supply with mechanical flow control mechanism according to claim 9, characterized in that the lateral outlet (503) of the second tee (5) is connected to the return pipe (6) via a non-return valve (3) for allowing a unidirectional return of liquid flow from the lateral outlet (503) of the second tee (5) to the lateral inlet (703) of the first tee (7).