阅读说明：本技术 一种新型柱塞式恒流阀 (Novel plunger type constant flow valve ) 是由 孔庆丰 盛盈华 于 2020-08-06 设计创作，主要内容包括：一种新型柱塞式恒流阀,它涉及阀门技术领域。它包括：恒流阀本体；设置于恒流阀本体内的、用于调节恒流阀的恒定通过量的流量调节组件,流量调节组件的一端伸出恒流阀本体；以及,设置于恒流阀本体内并与流量调节组件相对的流量维持组件,流量维持组件用于根据恒流阀本体的进水口的压力调整恒流阀本体的出水口大小；流量维持组件包括：与恒流阀本体固定装配的阀座；安装于阀座上并可相对于阀座移动以远离或靠近流量调节组件的阀芯；以及,设置于阀芯与阀座之间的、用于在恒流阀本体的进水口压力变化时平衡恒流阀本体的进水口和出水口压力差的弹性件。采用上述技术方案的恒流阀具有调节精度高,使用寿命长,结构简单的优势。(A novel plunger type constant flow valve relates to the technical field of valves. It includes: a constant flow valve body; the flow regulating assembly is arranged in the constant flow valve body and used for regulating the constant throughput of the constant flow valve, and one end of the flow regulating assembly extends out of the constant flow valve body; the flow maintaining assembly is arranged in the constant flow valve body and is opposite to the flow adjusting assembly, and the flow maintaining assembly is used for adjusting the size of a water outlet of the constant flow valve body according to the pressure of a water inlet of the constant flow valve body; the flow maintenance assembly includes: the valve seat is fixedly assembled with the constant flow valve body; a poppet mounted on the valve seat and movable relative to the valve seat to move away from or toward the flow regulating assembly; and the elastic piece is arranged between the valve core and the valve seat and used for balancing the pressure difference between the water inlet and the water outlet of the constant flow valve body when the pressure of the water inlet of the constant flow valve body is changed. The constant flow valve adopting the technical scheme has the advantages of high adjusting precision, long service life and simple structure.)

1. A novel plunger type constant flow valve is characterized by comprising:

a constant flow valve body (1);

the flow regulating assembly (2) is arranged in the constant flow valve body (1) and is used for regulating the constant throughput in the constant flow valve body (1), and one end of the flow regulating assembly (2) extends out of the constant flow valve body (1) so as to be regulated by a user;

the flow maintaining assembly (3) is arranged in the constant flow valve body (1) and is opposite to the flow adjusting assembly (2), and the flow maintaining assembly (3) is used for adjusting the size of a water outlet (5) of the constant flow valve body (1) according to the pressure of a water inlet (4) of the constant flow valve body (1) so as to maintain the flow of the water outlet (5);

the flow maintenance assembly (3) comprises:

the valve seat (6) is fixedly assembled with the constant flow valve body (1);

a spool (7) mounted on the valve seat (6) and movable relative to the valve seat (6) to move away from or close to the flow regulating assembly (2); and the number of the first and second groups,

and the elastic piece (8) is arranged between the valve core (7) and the valve seat (6) and is used for balancing the pressure difference between the water inlet (4) and the water outlet (5) of the constant flow valve body (1) when the pressure of the water inlet (4) of the constant flow valve body (1) is changed.

2. The new plunger type constant flow valve according to claim 1, characterized in that the valve spool (7) comprises: an adjusting end (9), a pressure sensing end (10) and a connecting section (11);

the adjusting end (9) is close to the flow adjusting assembly (2), and the adjusting end (9) is used for adjusting the size of the water outlet (5) of the constant flow valve body (1);

the pressure sensing end (10) is far away from the adjusting end (9), and the pressure sensing end (10) is used for sensing the pressure of the water inlet (4) of the constant flow valve body (1) and driving the valve core (7) to move under the action of the pressure;

the connecting section (11) is used for connecting the adjusting end (9) and the pressure sensing end (10).

3. The new plunger type constant flow valve according to claim 2, characterized in that the cross-sectional dimension of the adjustment end (9) is larger than the cross-sectional dimension of the connection section (11); the adjusting end (9), the pressure sensing end (10) and the connecting section (11) are integrally formed.

4. The new plunger type constant flow valve according to claim 3, characterized in that a reinforcement rib (26) is arranged between the adjusting end (9) and the connecting section (11).

5. The plunger type constant flow valve as set forth in claim 4, wherein the valve core (7) is in an I shape as a whole, and the valve core (7) is made of nylon.

6. The plunger-type constant flow valve as set forth in claim 5, wherein the elastic member (8) is disposed between the pressure sensing end (10) and the valve seat (6), and the elastic member (8) is a spring.

7. The new plunger type constant flow valve according to any of claims 1-6, characterized in that the flow regulating assembly (2) comprises:

the ceramic stator (12) is fixedly assembled with the constant flow valve body (1), and a first water through hole (27) is formed in the ceramic stator (12);

the ceramic movable plate (13) is stacked on the ceramic static plate (12) and is far away from one side of the flow maintaining assembly (3), a second water through hole (28) is formed in the ceramic movable plate (13), and the ceramic movable plate (13) can move relative to the ceramic static plate (12) to adjust the size of the overlapping part of the second water through hole (28) and the first water through hole (27); and the number of the first and second groups,

and the valve column (14) is assembled with the ceramic movable plate (13) at one end, extends out of the constant flow valve body (1) at the other end, and is used for driving the ceramic movable plate (13) to move relative to the ceramic static plate (12) through self rotation.

8. The plunger type constant flow valve as claimed in claim 7, wherein a mounting groove (15) is provided on the constant flow valve body (1), the mounting groove (15) is used for mounting the ceramic stator (12), a clamping groove (16) is provided on the inner wall of the mounting groove (15), a clamping block (17) is provided on the ceramic stator (12), and the clamping block (17) is used for cooperating with the clamping groove (16) to limit the ceramic stator (12).

9. The new plunger type constant flow valve according to claim 8, characterized in that the constant flow valve body (1) comprises: the valve body (18), the water inlet (4) and the water outlet (5) are arranged on the valve body (18); an upper valve cover (19), wherein the upper valve cover (19) is assembled on the valve body (18), and the upper valve cover (19) is used for assembling the valve column (14);

and a lower valve cover (20), wherein the lower valve cover (20) is assembled on the valve body (18) through fastening screws.

10. The plunger-type constant flow valve as set forth in claim 9, characterized in that the ceramic stator (12) divides the cavity in the valve body (18) into an inlet chamber (21) and an outlet chamber (22); a concave cavity (23) is formed in the lower valve cover (20), the concave cavity (23) is communicated with the outlet cavity (22), the valve seat (6) separates the outlet cavity (22) from the concave cavity (23), a communication hole (24) is formed in the side wall of the concave cavity (23), and the communication hole (24) is communicated with the concave cavity (23) and the inlet cavity (21) so that the pressure in the concave cavity (23) is consistent with that in the inlet cavity (21); the pressure sensing end (10) is located in the cavity (23), the adjusting end (9) is located in the outlet cavity (22), and the ceramic moving plate (13) is located in the outlet cavity (22).

Technical Field

The invention relates to the technical field of valves, in particular to a novel plunger type constant flow valve.

Background

The constant flow valve, namely a constant flow regulating valve, is a regulating valve with a constant flow function, and is a self-operated differential pressure control device essentially. The working principle of the valve is that the inlet pressure is reduced to a certain required outlet pressure, and the outlet pressure is automatically kept stable by means of the energy of a medium, from the viewpoint of hydrodynamics, the valve is essentially a throttling element with changeable local resistance, namely, the flow rate and the kinetic energy of fluid are changed by changing the throttling area, so that different purposes of pressure reduction are achieved, and then the fluctuation of the pressure behind the valve is balanced with the elastic force of a valve core by means of the adjustment of a control and adjustment system, so that the pressure behind the valve is kept constant within a certain error range.

The existing constant flow valve mostly adopts a diaphragm type valve core made of rubber, and the diaphragm type valve core is different in water pressure at an inlet and an outlet through the elasticity of the diaphragm, so that the diaphragm changes the size of a water outlet in an elasticity range, the flow is kept constant, the constant flow valve is generally used for a long time, the valve core is easy to lose elasticity or weaken the elasticity, the precision is influenced, the rubber diaphragm is easy to age, and the service cycle of the valve core is short. Therefore, improvements are desired.

Disclosure of Invention

The invention aims to provide a novel plunger type constant flow valve aiming at the defects and shortcomings of the prior art, the novel plunger type constant flow valve adopts an I-shaped valve core made of nylon materials, an elastic piece is arranged between a valve seat of the valve core to serve as a feedback element, the problems that the precision is influenced due to the fact that elasticity of the existing diaphragm type valve core is weakened, and the service life is reduced due to the fact that the valve core is aged are solved, and the novel plunger type constant flow valve has the advantages of being high in adjusting precision, long in service life and simple in structure.

In order to achieve the purpose, the invention adopts the technical scheme that: a novel plunger-type constant flow valve comprising: a constant flow valve body; a flow regulating assembly disposed within the constant flow valve body for regulating a constant throughput within the constant flow valve body, one end of the flow regulating assembly extending out of the constant flow valve body for adjustment by a user; the flow maintaining assembly is arranged in the constant flow valve body and is opposite to the flow adjusting assembly, and the flow maintaining assembly is used for adjusting the size of a water outlet of the constant flow valve body according to the pressure of the water inlet of the constant flow valve body so as to maintain the flow of the water outlet; the flow maintenance assembly includes: the valve seat is fixedly assembled with the constant flow valve body; a poppet mounted on the valve seat and movable relative to the valve seat to move away from or toward the flow regulating assembly; and the elastic piece is arranged between the valve core and the valve seat and used for balancing the pressure difference between the water inlet and the water outlet of the constant flow valve body when the pressure of the water inlet of the constant flow valve body is changed.

Further, the valve cartridge includes: the pressure sensing device comprises an adjusting end, a pressure sensing end and a connecting section; the adjusting end is close to the flow adjusting assembly and used for adjusting the size of the water outlet of the constant flow valve body; the pressure sensing end is far away from the adjusting end and used for sensing the pressure of the water inlet of the constant flow valve body and driving the valve core to move under the action of the pressure; the connecting section is used for connecting the adjusting end and the pressure sensing end.

Further, the cross-sectional dimension of the adjusting end is larger than that of the connecting section; the adjusting end, the pressure sensing end and the connecting section are integrally formed.

Further, a reinforcing rib is arranged between the adjusting end and the connecting section.

Furthermore, the valve core is integrally in an I shape and is made of nylon.

Further, the elastic element is arranged between the pressure sensing end and the valve seat, and the elastic element is a spring.

Further, the flow regulating assembly comprises: the ceramic stator is fixedly assembled with the constant flow valve body and is provided with a first water through hole; the ceramic movable plate is stacked on the side, far away from the flow maintaining assembly, of the ceramic static plate, a second water through hole is formed in the ceramic movable plate, and the ceramic movable plate can move relative to the ceramic static plate to adjust the size of the overlapping part of the second water through hole and the first water through hole; and one end of the valve post is assembled with the ceramic moving plate, the other end of the valve post extends out of the constant flow valve body, and the valve post is used for driving the ceramic moving plate to move relative to the ceramic static plate through self rotation.

Further, be provided with the mounting groove on the constant flow valve body, the mounting groove is used for the installation the pottery still, be provided with the draw-in groove on the mounting groove inner wall, be provided with the fixture block on the pottery still, the fixture block be used for with the draw-in groove cooperation is in order to inject the pottery still.

Further, the constant flow valve body includes: the water inlet and the water outlet are arranged on the valve body; the valve upper cover is assembled on the valve body and used for assembling the valve column; and the lower valve cover is assembled on the valve body through fastening screws.

Further, the ceramic stator plate divides the cavity in the valve body into an inlet cavity and an outlet cavity; a concave cavity is formed in the lower valve cover and is communicated with the outlet cavity, the valve seat separates the outlet cavity from the concave cavity, and communication holes are formed in the side wall of the concave cavity and are communicated with the inlet cavity so that the pressure in the concave cavity is consistent with that in the inlet cavity; the pressure sensing end is positioned in the concave cavity, the adjusting end is positioned in the oral cavity, and the ceramic moving plate is positioned in the oral cavity.

After the technical scheme is adopted, the invention has the beneficial effects that: when the constant flow valve is used, the valve column is rotated to drive the ceramic movable plate to move relative to the ceramic static plate, so that the size of the overlapped part of the first water passing hole and the second water passing hole is adjusted, and the integral flow rate of the constant flow valve is set; when the pressure of the inlet cavity is greater than the pressure of the outlet cavity, the pressure sensing end of the valve core drives the adjusting end to move towards one side of the ceramic stator under the driving of the pressure until the elastic force of the spring, the pressure of the inlet cavity and the pressure of the outlet cavity are balanced, the movement is stopped, at the moment, the size of the water outlet is reduced, and the flow in the outlet cavity is kept constant; when the pressure of the inlet cavity is smaller than the pressure of the outlet cavity, the adjusting end of the valve core is driven by the pressure to drive the adjusting end to move towards one side of the lower valve cover until the elastic force of the spring, the pressure of the inlet cavity and the pressure of the outlet cavity are balanced, the movement is stopped, at the moment, the size of the water outlet is increased, and the flow in the outlet cavity is kept constant; the constant flow valve arranged in this way adopts an I-shaped valve core made of nylon materials, and the valve core is provided with an elastic part between the valve seats as a feedback element, so that the problems that the precision is influenced by the weakening of the elasticity of the existing diaphragm type valve core and the service life is reduced due to the aging of the valve core are solved, and the constant flow valve has the advantages of high regulation precision, long service life and simple structure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is an exploded view of the upper valve cover, the valve stem, the ceramic stator, the ceramic rotor and the valve body in this embodiment;

FIG. 3 is a left side view of the present embodiment;

fig. 4 is a cross-sectional view taken along a thickness corresponding to section line a-a in fig. 3.

Description of reference numerals: 1. a constant flow valve body; 2. a flow regulating assembly; 3. a flow maintenance component; 4. a water inlet; 5. a water outlet; 6. a valve seat; 7. a valve core; 8. an elastic member; 9. an adjustment end; 10. a pressure sensing end; 11. a connecting section; 12. a ceramic stator; 13. a ceramic rotor; 14. a spool; 15. mounting grooves; 16. a card slot; 17. a clamping block; 18. a valve body; 19. an upper valve cover; 20. a valve lower cover; 21. an inlet chamber; 22. an outlet chamber; 23. a concave cavity; 24. a communicating hole; 25. a pressure relief port; 26. reinforcing ribs; 27. a first water through hole; 28. a second water through hole; 29. assembling a head; 30. a kidney-shaped groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.

The present embodiment relates to a novel plunger type constant flow valve, as shown in fig. 1-4, comprising: a constant flow valve body 1, a flow regulating assembly 2 and a flow maintaining assembly 3.

The constant flow valve body 1 is a straight pipe two-way valve. The flow regulating assembly 2 is arranged in the constant flow valve body 1. The flow regulating assembly 2 is used to regulate the constant throughput of the constant flow valve. Wherein the regulating end 9 of the flow regulating assembly 2 covers the constant flow valve body 1 for the user to adjust for constant throughput. The flow maintaining assembly 3 is disposed in the constant flow valve body 1, and the flow maintaining assembly 3 is disposed opposite to the flow adjusting assembly 2. The flow maintaining assembly 3 is used for adjusting the size of the water outlet 5 of the constant flow valve body 1 according to the pressure of the water inlet 4 of the constant flow valve body 1 so as to maintain the flow of the water outlet 5.

Further, as shown in fig. 1 to 4, the flow maintaining assembly 3 includes: a valve seat 6, a valve core 7 and an elastic member 8. The valve seat 6 is fixedly assembled with the constant flow valve body 1. The valve element 7 is mounted on the valve seat 6 and is movable relative to the valve seat 6 to move away from or towards the flow regulating assembly 2. The valve core 7 is used for adjusting the size of the water outlet 5 of the constant flow valve body 1, so that the flow of the water outlet end is maintained in a constant range. The elastic member 8 is disposed between the valve element 7 and the valve seat 6. When the pressure of the water inlet 4 of the constant flow valve body 1 changes, the elastic part 8 is used for balancing the pressure difference between the water inlet 4 and the water outlet 5 of the constant flow valve body 1, so that the water pressure of the water inlet 4, the water pressure of the water outlet 5 and the pressure of the elastic part 8 are kept balanced.

Specifically, as shown in fig. 1 to 4, the spool 7 includes: an adjusting end 9, a pressure sensing end 10 and a connecting section 11. The regulating end 9 is close to the flow regulating assembly 2. The adjusting end 9 is used for adjusting the size of the water outlet 5 of the constant flow valve body 1. The pressure sensing end 10 is far away from the adjusting end 9, and the pressure sensing end 10 is used for sensing the pressure of the water inlet 4 of the constant flow valve body 1 and driving the valve core 7 to move when the pressure changes. The connecting section 11 is used for connecting the adjusting end 9 and the pressure sensing end 10.

Preferably, the cross-sectional dimension of the adjustment end 9 is larger than the cross-sectional dimension of the connection section 11, so as to facilitate the pressure sensing end 10 to sense the pressure of the water inlet 4. In this embodiment, the adjustment end 9, the pressure sensing end 10 and the connecting section 11 are integrally formed.

Further, as shown in fig. 1-4, a reinforcing rib 26 is provided between the adjusting end 9 and the connecting section 11. The valve core 7 is integrally in an I shape, and the valve core 7 is made of nylon.

Preferably, the elastic member 8 is disposed between the pressure sensing end 10 and the valve seat 6, and the elastic member 8 is a spring.

Further, as shown in fig. 1 to 4, the flow rate adjustment assembly 2 includes: a ceramic stator 12, a ceramic rotor 13 and a valve post 14. The ceramic stator 12 is fixedly installed inside the constant flow valve body 1. The ceramic stator 12 is provided with a first water through hole 27. The ceramic rotor 13 is stacked on the ceramic stator 12 on the side away from the flow rate maintaining unit 3. The ceramic rotor 13 is provided with a second water through hole 28. The first water through hole 27 and the second water through hole 28 are used for communicating the water inlet 4 and the water outlet 5. It should be noted that the ceramic rotor 13 is movable relative to the ceramic stator 12 to adjust the overlapping portion of the second water through hole 28 and the first water through hole 27, thereby setting a constant flow rate of the constant flow valve. One end of the valve column 14 is assembled with the ceramic moving plate 13, and the other end extends out of the constant flow valve body 1. The valve column 14 is used for driving the ceramic rotor 13 to move relative to the ceramic stator 12 through self rotation.

As shown in fig. 1 to 4, the constant flow valve body 1 is provided with an installation groove 15, the installation groove 15 is used for installing the ceramic stator 12, the inner wall of the installation groove 15 is provided with a clamping groove 16, the ceramic stator 12 is provided with a clamping block 17, and the clamping block 17 is used for being matched with the clamping groove 16 to limit the ceramic stator 12. Preferably, the bottom of the mounting groove 15 is provided with a waterproof gasket for improving the tightness of the fitting between the ceramic stator 12 and the inner wall of the mounting groove 15.

Preferably, as shown in fig. 1 to 4, the first water passing hole 27 and the second water passing hole 28 are identical in shape and size. And a kidney-shaped groove 30 is arranged on the ceramic moving plate 13, and an assembling head 29 is arranged on one side of the valve column 14 close to the ceramic moving plate 13. The assembling head 29 is adapted to the kidney groove 30 and has a rotation preventing effect after assembling, so that the ceramic rotor 13 moves synchronously with the spool 14 when the spool 14 is rotated.

Further, as shown in fig. 1 to 4, the constant flow valve body 1 includes: the valve body 18, the water inlet 4 and the water outlet 5 are arranged on the valve body 18; the valve upper cover 19 is assembled on the valve body 18, and the valve upper cover 19 is used for assembling the valve column 14; and a lower valve cover 20, the lower valve cover 20 being assembled to the valve body 18 by fastening screws.

Specifically, as shown in fig. 1-4, the ceramic stator 12 divides the cavity within the valve body 18 into an inlet chamber 21 and an outlet chamber 22. The lower valve cover 20 is provided with a cavity 23, the cavity 23 is communicated with the outlet cavity 22, the valve seat 6 separates the outlet cavity 22 from the cavity 23, the side wall of the cavity 23 is provided with a communicating hole 24, and the communicating hole 24 is communicated with the cavity 23 to the inlet cavity 21 so that the pressure in the cavity 23 is consistent with that in the inlet cavity 21. The pressure sensing end 10 is positioned in the cavity 23, the adjusting end 9 is positioned in the outlet cavity 22, and the ceramic rotor 13 is positioned in the outlet cavity 22.

Preferably, the valve body 18 is further provided with a pressure relief port 25, and the pressure relief port 25 is located on an outer side wall of the inlet chamber 21 and is communicated with the inlet chamber 21.

The working principle of the present embodiment is roughly as follows: when the constant flow valve is used, the valve column 14 is rotated to drive the ceramic movable plate 13 to move relative to the ceramic static plate 12, so that the size of the overlapped part of the first water through hole 27 and the second water through hole 28 is adjusted, and the integral flow rate of the constant flow valve is set; when the pressure of the inlet cavity 21 is greater than the pressure of the outlet cavity 22, the pressure sensing end 10 of the valve core 7 is driven by the pressure to drive the adjusting end 9 to move towards one side of the ceramic stator 12 until the elastic force of the spring, the pressure of the inlet cavity 21 and the pressure of the outlet cavity 22 are balanced, the movement is stopped, at the moment, the size of the water outlet 5 is reduced, and the flow in the outlet cavity 22 is kept constant; when the pressure of the inlet cavity 21 is smaller than the pressure of the outlet cavity 22, the adjusting end 9 of the valve core 7 is driven by the pressure to drive the adjusting end 9 to move towards one side of the valve lower cover 20 until the spring force, the pressure of the inlet cavity 21 and the pressure of the outlet cavity 22 are balanced, the movement is stopped, at the moment, the size of the water outlet 5 is increased, and the flow in the outlet cavity 22 is kept constant; the constant flow valve that sets up like this adopts "worker" style of calligraphy case 7 of nylon material to case 7 sets up elastic component 8 as feedback element between disk seat 6, has avoided current diaphragm formula case 7 to influence the precision because elasticity weakens and reduces life's problem because case 7 ages, has the regulation precision height, long service life, simple structure's advantage.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.