CN219432550U

CN219432550U - Double-layer window type balance valve

Info

Publication number: CN219432550U
Application number: CN202320166356.7U
Authority: CN
Inventors: 涂建新; 涂建福; 万文成; 陈俊杰; 江帆; 李姜哲
Original assignee: Jiangxironghexiaofang
Current assignee: Jiangxironghexiaofang
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-07-28
Anticipated expiration: 2033-02-09

Abstract

A double-layer window type balance valve comprises a valve body, a rubber diaphragm and a valve cover, wherein a valve sleeve in threaded connection with the inner wall of the valve body is arranged in a foam liquid lower cavity, a valve rod is arranged in the valve sleeve in a penetrating manner, the top end of the valve rod is connected with the rubber diaphragm, and the bottom end of the valve rod is connected with a valve core; the bottom of the valve core is provided with a first liquid through hole, the side wall of the valve core is provided with a second liquid through hole, and the side wall of the valve sleeve is provided with a third liquid through hole; the bottom of the valve body is provided with a liquid inlet, and the side wall is provided with a liquid outlet. In the application, when the second liquid passing hole is communicated with the third liquid passing hole, foam liquid sequentially enters the main flow loop through the liquid inlet, the first liquid passing hole, the second liquid passing hole, the third liquid passing hole and the liquid outlet, and the foam liquid is a first layer window; when the valve rod drives the valve core to move upwards, the bottom of the valve core is separated from the valve body, and the liquid inlet and the liquid outlet are directly communicated, so that the valve core is a second layer of window; the pressure difference is regulated by increasing the reflux quantity of the foam liquid through the double-layer window, so that the pressure difference is prevented from being higher, and the valve is improved on the basis of the existing balance valve, so that the cost is low.

Description

Double-layer window type balance valve

Technical Field

The utility model relates to the technical field of fire-fighting equipment, in particular to a double-layer window type balance valve.

Background

In the working process, the balance type foam proportion mixing device is limited in displacement range of the diaphragm of the balance valve due to pressure difference, so that in the use process, the balance type foam proportion mixing device is often found that when the flow rate is low, the foam liquid amount discharged by the balance valve is insufficient, the pressure difference is increased, the flow rate of the foam liquid is increased, and the foam liquid entering the main water flow is increased, so that the foam mixing ratio is higher.

Disclosure of Invention

Based on the above, the utility model aims to provide a double-layer window type balance valve, which can adjust the pressure difference by increasing the foam liquid reflux quantity of the valve, so as to avoid the pressure difference from being higher.

The double-layer window type balance valve comprises a valve body, a rubber diaphragm and a valve cover which are sequentially connected through bolts, wherein a water flow upper cavity is formed between the valve cover and the rubber diaphragm, a foam liquid lower cavity is formed between the valve body and the rubber diaphragm, a valve sleeve in threaded connection with the inner wall of the valve body is arranged in the foam liquid lower cavity, a valve rod penetrates through the valve sleeve, the top end of the valve rod is fixedly connected with the rubber diaphragm, and the bottom end of the valve rod is fixedly connected with a valve core;

the bottom of the valve core is provided with a first liquid through hole, the side wall of the valve core is provided with a second liquid through hole, and the side wall of the valve sleeve is provided with a third liquid through hole;

the bottom of valve body is equipped with the inlet, is equipped with the liquid outlet of being connected with the mainstream return circuit on the lateral wall, works as when the second through-liquid hole with communicate between the third through-liquid hole, the foam liquid is by inlet, first through-liquid hole, second through-liquid hole, third through-liquid hole and liquid outlet in proper order, gets into in the mainstream return circuit.

Compared with the prior art, in the utility model, when the second liquid passing hole is communicated with the third liquid passing hole, foam liquid sequentially enters a main flow loop through a liquid inlet, a first liquid passing hole, a second liquid passing hole, a third liquid passing hole and a liquid outlet, and the foam liquid is a first layer window; when the valve rod drives the valve core to move upwards, the bottom of the valve core is separated from the valve body, and the liquid inlet and the liquid outlet are directly communicated, so that the valve core is a second-layer window; the pressure difference is regulated by increasing the reflux quantity of the foam liquid through the double-layer window, so that the pressure difference is prevented from being higher, and in addition, the valve is improved on the basis of the existing balance valve, the cost is low, and the improvement range is effective.

Further, when the bottom of the valve core is attached to the inner side wall of the valve body, the second liquid through hole is overlapped with the third liquid through hole.

Further, the valve rod comprises a guide rod, and a top connecting rod and a bottom connecting rod which are connected with the end parts of the guide rod;

the guide rod penetrates through the valve sleeve, the top connecting rod is fixedly connected with the rubber diaphragm, and the bottom connecting rod is fixedly connected with the valve core.

Further, the valve sleeve comprises a top cover and a first valve wall which is arranged on the top cover and extends downwards, and the third liquid through hole is arranged on the first valve wall;

the middle part of top cap pass through the slide hole with the guide bar is connected, the outward flange with the inner wall threaded connection of valve body.

Further, a first sealing ring is embedded between the sliding hole and the guide rod, and a second sealing ring is embedded between the top cover and the inner wall of the valve body.

Further, the valve core comprises a bottom core and a second valve wall which is arranged on the bottom core and extends upwards;

the first liquid through hole is positioned on the bottom core, the second liquid through hole is positioned on the second valve wall, and the outer wall of the second valve wall is attached to the inner wall of the first valve wall.

Drawings

FIG. 1 is a schematic diagram of a double-layer window type balance valve according to the present utility model;

FIG. 2 is an exploded view of the two-layer windowed balance valve of FIG. 1;

fig. 3 is a cross-sectional view of the double-windowed balancing valve of fig. 1.

Description of main reference numerals:

the utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 3, a double-layer window type balance valve provided in an embodiment of the present utility model includes a valve body 10, a rubber diaphragm 11 and a valve cover 12 sequentially connected by bolts, wherein an upper water flow cavity is formed between the valve cover 12 and the rubber diaphragm 11, a lower foam liquid cavity is formed between the valve body 10 and the rubber diaphragm 11, a valve sleeve 13 in threaded connection with an inner wall of the valve body 10 is disposed in the lower foam liquid cavity, a valve rod 14 is disposed in the valve sleeve 13 in a penetrating manner, a top end of the valve rod 14 is fixedly connected with the rubber diaphragm 11, and a bottom end of the valve rod 14 is fixedly connected with a valve core 15;

the bottom of the valve core 15 is provided with a first liquid through hole 151, the side wall is provided with a second liquid through hole 152, and the side wall of the valve sleeve 13 is provided with a third liquid through hole 131;

the bottom of the valve body 10 is provided with a liquid inlet 101, the side wall is provided with a liquid outlet 102 connected with the main flow loop, and when the second liquid passing hole 152 is communicated with the third liquid passing hole 131, foam liquid sequentially enters the main flow loop through the liquid inlet 101, the first liquid passing hole 151, the second liquid passing hole 152, the third liquid passing hole 131 and the liquid outlet 102.

In the present utility model, the first, second and third via holes 151, 152 and 131 are all plural in number and are arranged in a circumferential array. The second through holes 152 and the third through holes 131 have the same number and corresponding radial positions. When the second through-liquid hole 152 is communicated with the third through-liquid hole 131, the foam liquid sequentially enters the main flow loop through the liquid inlet 101, the first through-liquid hole 151, the second through-liquid hole 152, the third through-liquid hole 131 and the liquid outlet 102, and is a first layer window; when the valve rod 14 drives the valve core 15 to move upwards, the bottom of the valve core 15 is separated from the valve body 10, and the liquid inlet 101 and the liquid outlet 102 are directly communicated, which is a second-layer window; the pressure difference is regulated by increasing the reflux quantity of the foam liquid through the double-layer window, so that the pressure difference is prevented from being higher.

Specifically, in a preferred embodiment of the present application, when the bottom of the valve element 15 is attached to the inner side wall of the valve body 10, the second through-liquid hole 152 is overlapped with the third through-liquid hole 131, and at this time, the flow rate of the first layer window is maximized.

Referring to fig. 2 and 3, the valve stem 14 includes a guide rod 141, and a top connecting rod 142 and a bottom connecting rod 143 connected to ends of the guide rod 141;

the guide rod 141 is inserted into the valve housing 13, the top connecting rod 142 is fixedly connected with the rubber diaphragm 11, and the bottom connecting rod 143 is fixedly connected with the valve core 15, so that when an up-down pressure difference occurs, the rubber diaphragm 11 drives the valve rod 14 and the valve core 15 to slide up and down.

Referring to fig. 2 and 3, the valve housing 13 includes a top cover 132, and a first valve wall 133 disposed on the top cover 132 and extending downward, and the third fluid passing hole 131 is disposed on the first valve wall 133;

the middle part of the top cover 132 is connected with the guide rod 141 through a sliding hole, and the outer edge is connected with the inner wall of the valve body 10 in a threaded manner.

In a preferred embodiment of the present application, a first sealing ring is embedded between the sliding hole and the guide rod 141, a second sealing ring is embedded between the top cover 132 and the inner wall of the valve body 10, and the sealing performance is enhanced by the first sealing ring and the second sealing ring, so that the foam liquid is prevented from leaking upwards between the valve sleeve 13 and the valve body 10.

Referring to fig. 2 and 3, the valve core 15 includes a bottom core 153, and a second valve wall 154 disposed on the bottom core 153 and extending upward;

the first liquid through hole 151 is located on the bottom core 153, the second liquid through hole 152 is located on the second valve wall 154, the outer wall of the second valve wall 154 is attached to the inner wall of the first valve wall 133, at this time, the second layer window is in a closed state, and the first layer window is in a maximum flow state.

In this application, main water flow pressure is introduced into the water flow upper cavity, foam liquid inlet pressure is introduced into the foam liquid lower cavity, the two pressure differences are used for pushing the rubber diaphragm 11 to move, the rubber diaphragm 11 drives the valve core 15 to move up and down in the valve sleeve 13 through the valve rod 14, the opening size of the foam liquid backflow is controlled, and then the foam liquid pressure entering the main flow is controlled. Because the required foam liquid intake is less in the small flow, but because the rubber diaphragm 11 is pulled, the opening gap is insufficient, the reflux amount is small, the foam liquid pressure difference can become larger, the foam liquid pressure of the injected main flow is increased, and the mixing ratio is higher, so that a first layer of window is added between the valve core 15 and the valve sleeve 13, when the foam liquid is insufficient in reflux, the pressure difference is increased, and when the displacement amount of the rubber diaphragm 11 is maximum, the second liquid passing hole 152 is overlapped with the third liquid passing hole 131, the foam liquid reflux amount is increased, and the pressure difference is adjusted back to a similar value.

In summary, the pressure difference is regulated by increasing the reflux quantity of the foam liquid through the double-layer window, so that the pressure difference is prevented from being higher.

In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and the same or similar parts between the embodiments are referred to each other. And the above examples only represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a double-deck window formula balance valve, includes valve body, rubber diaphragm and the valve gap that connects in proper order through the bolt, the valve gap with form rivers upper chamber between the rubber diaphragm, the valve body with form foam liquid lower chamber, its characterized in that between the rubber diaphragm: a valve sleeve in threaded connection with the inner wall of the valve body is arranged in the foam liquid lower cavity, a valve rod is arranged in the valve sleeve in a penetrating manner, the top end of the valve rod is fixedly connected with the rubber diaphragm, and the bottom end of the valve rod is fixedly connected with the valve core;

2. The double-layer windowed balance valve of claim 1, wherein the second fluid passage is coincident with the third fluid passage when the bottom of the valve spool is in engagement with the interior sidewall of the valve body.

3. The double-window balancing valve according to claim 1, wherein the valve stem comprises a guide rod, and a top connecting rod and a bottom connecting rod connected to ends of the guide rod;

4. The double-window balancing valve of claim 3, wherein the valve housing comprises a top cover, and a first valve wall disposed on the top cover and extending downward, the third fluid passage being located on the first valve wall;

5. The double-layer window type balance valve of claim 4, wherein a first sealing ring is embedded between the sliding hole and the guide rod, and a second sealing ring is embedded between the top cover and the inner wall of the valve body.

6. The dual window balancing valve of claim 4, wherein the valve core comprises a bottom core and a second valve wall disposed on the bottom core and extending upward;