CN215293601U

CN215293601U - Blocking device

Info

Publication number: CN215293601U
Application number: CN202120638447.7U
Authority: CN
Inventors: 丁江涛; 蒋雷; 栾勇; 李军强
Original assignee: Yantai Zhengda Thermal Power Equipment Co ltd
Current assignee: Yantai Zhengda Thermal Power Equipment Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-12-24
Anticipated expiration: 2031-03-30

Abstract

The utility model relates to a blocking device, which comprises a shell, a valve plate opening and closing mechanism and an adjusting mechanism, wherein the shell comprises a barrel and a lower sealing head, a water supply driving pipe is arranged on the lower sealing head, a pore plate is arranged in the shell, the valve plate opening and closing mechanism comprises a valve rod, a valve plate, an opening and closing spring, a spring sleeve, a cylinder body and a piston, the cylinder body is arranged at the bottom of the barrel, one end of the valve rod is connected with the valve plate, the other end of the valve rod passes through the spring sleeve and is connected with the piston, the opening and closing spring is sleeved on the valve rod between the spring sleeve and the piston, and the lower sealing head is connected with the cylinder body; the adjusting mechanism acts on the valve plate for adjusting the opening height of the valve plate. The utility model discloses simple structure, the adjustment is convenient, utilizes the change of pressure to do switch power, and the through-hole of orifice plate and guiding mechanism act on the change of valve plate power and do regulation power, utilize water conservancy self characteristic to realize automatic switch, decompression, steady voltage and the constant current of rivers, have guaranteed the operation that whole high-rise building heating system is stable and safe.

Description

Blocking device

Technical Field

The utility model relates to a blocker belongs to high-rise building heating technical field.

Background

The most economical mode for heating the high-rise building is a system for directly connecting a heat source system of an original low-rise building to supply heat to a high-rise radiator and a low-rise radiator at the same time, and the system requires that the pressure of high-rise heating return water is reduced to prevent the high-rise heating return water from puncturing the low-rise radiator.

At present, a high-rise heating system comprises a booster pump, a control system, a pressure reducing valve, a high-rise radiator and a low-rise radiator, wherein the booster pump and the control system are mainly used for enabling heating media to enter the high-rise radiator, the pressure reducing valve is mainly used for reducing the dynamic pressure of high-rise return water, the heating system needs to be adjusted frequently under the energy-saving situation and requirements, the flow of the heating system changes, the pressure changes along with the change, when the flow of the system is reduced, the flow area cannot be correspondingly reduced through the pressure reducing valve, and the pressure of a pipeline outlet must be increased to cause the overpressure of the low-rise system to damage the whole system.

In addition, when power failure occurs, the booster pump stops working, the dynamic pressure disappears, the backwater positioned in the high-region radiator forms higher static pressure relative to the low-region radiator, and the pressure reducing valve cannot be closed in time to separate the high-region system from the low-region system, so that the static pressure threatens the safety of the low-region radiator.

Disclosure of Invention

The utility model discloses not enough to prior art exists, provide a simple structure, the adjustment is convenient, can open automatically and close, in time cuts off high district and low zone system, guarantees the safe and reliable's of heating system operation blocker.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a kind of blocker, including the body, also include valve plate start-stop gear and guiding mechanism set up on the said body, the said body includes the cylinder and lower head set up in the inferior part of cylinder, there are water inlet and water outlet on the said cylinder, there are water supply drive pipes on the said lower head, there are orifice plates in the said body, said water inlet, water outlet are set up above, below the said orifice plate separately;

the valve plate opening and closing mechanism comprises a valve rod, a valve plate, an opening and closing spring, a spring sleeve, a cylinder body and a piston arranged in the cylinder body, the cylinder body is arranged at the bottom of the cylinder body, one end of the valve rod penetrates through a through hole of the pore plate to be connected with the valve plate, the other end of the valve rod penetrates through the spring sleeve to be connected with the piston, the spring sleeve is arranged on the shell or the cylinder body, the opening and closing spring is sleeved on the valve rod between the spring sleeve and the piston, and the lower end enclosure is connected with the cylinder body;

the adjusting mechanism acts on the valve plate and is used for adjusting the opening height of the valve plate.

The utility model has the advantages that: when the system moves, can control the requirement that reaches constant flow and constant voltage to the discharge and the pressure in high district, when the pump is shut down, can realize cutting off rapidly of high district return water, in a word, the utility model discloses simple structure, the adjustment is convenient, utilizes the change of pressure to do switching power, and the through-hole of orifice plate and guiding mechanism act on the change of valve plate power and do regulation power, utilize water conservancy self characteristic to realize automatic switch, decompression, steady voltage and the constant current of rivers, can cut off high district and regional system fast when the system trouble, guaranteed the stable and safe operation of whole high-rise building heating system.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, still be equipped with scour protection mechanism on the casing, scour protection mechanism includes the anti-scouring section of thick bamboo, the anti-scouring section of thick bamboo is equipped with a plurality of circulation holes on the surface, the anti-scouring section of thick bamboo sets up the outside of valve plate, the upper end of anti-scouring section of thick bamboo with the casing is connected, the lower extreme with the valve plate is connected.

Adopt above-mentioned further scheme's beneficial effect be, the anti-scouring section of thick bamboo can carry out the decompression to the water that enters into the casing through the water inlet, and the flow direction district heat supply pipe network that the water after the decompression of anti-scouring section of thick bamboo and orifice plate can be stable.

Furthermore, the adjusting mechanism comprises an adjusting seat, an adjusting screw rod and an adjusting spring, the adjusting seat is installed on the shell, the upper portion of the adjusting screw rod is in threaded connection with the adjusting seat, a spring guide sleeve is arranged on the lower portion of the adjusting screw rod, and the adjusting spring is arranged between the spring guide sleeve and the valve plate.

The valve plate has the advantages that the height of the adjusting screw rod can be adjusted by rotating the adjusting screw rod, the spring force of the adjusting spring is controlled, the opening height of the valve plate is adjusted, and the water flow and the pressure in a high area are controlled to achieve the purposes of constant flow and constant pressure.

Furthermore, the lower extreme of adjustment lead screw passes the spring uide bushing, the upper end of valve rod passes the valve plate, the upper end suit of adjustment spring is in the outside of adjustment lead screw, the lower extreme suit is in the outside of valve rod.

Adopt above-mentioned further scheme's beneficial effect be, guide the flexible of adjusting spring, prevent that the spring skew from warping, the effort to the valve plate is influenced.

Furthermore, the upper end of the anti-impact barrel extends out of the shell and is provided with an upper sealing flange, and the upper sealing flange is connected with the adjusting seat.

The beneficial effect who adopts above-mentioned further scheme is, realizes the installation of adjustment seat, is convenient for maintain adjustment mechanism.

Furthermore, the lower end of the opening and closing spring is connected with the piston through a locking nut.

Adopt above-mentioned further scheme's beneficial effect be, the lower extreme accessible nut of opening and close the spring is installed on the piston.

Further, the valve plate is provided with a sealing ring at the position where the valve plate is contacted with the orifice plate.

Adopt above-mentioned further scheme's beneficial effect to be, increased sealed effect between valve plate and the orifice plate.

Furthermore, the shell further comprises an upper end enclosure, and the upper end of the anti-flushing cylinder is connected with the upper end enclosure.

The beneficial effect who adopts above-mentioned further scheme is that, the design of upper cover is convenient for to the installation and the maintenance of each part in the barrel.

Furthermore, a screw rod installation barrel is arranged on the adjustment seat, a packing cavity used for containing sealing packing is further arranged between the adjustment screw rod and the screw rod installation barrel, and the sealing packing is arranged in the packing cavity through a fastening nut and a sealing cap.

Adopt above-mentioned further scheme's beneficial effect to realize sealed to the upper end of adjustment lead screw.

Further, a lower sealing flange is arranged on the lower end enclosure and connected with the cylinder body through a bolt.

The beneficial effect who adopts above-mentioned further scheme is, realizes the installation of low head, is convenient for maintain each structure in low head and the cylinder body.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure, 1, a water supply driving pipe; 2. a piston; 3. locking the nut; 4. a valve stem; 5. a barrel; 6. an orifice plate; 7. a water inlet; 8. an upper end enclosure; 9. an upper sealing flange; 10. an adjusting seat; 11. fastening a nut; 12. Sealing and filling; 13. adjusting the screw rod; 14. adjusting the spring; 15. a spring guide sleeve; 16. a washout prevention cylinder; 17. A valve plate; 18. a seal ring; 19. a water outlet; 20. a spring housing; 21. opening and closing the spring; 22. a cylinder body; 23. A lower sealing flange; 24. and (5) sealing the head.

Detailed Description

The principles and features of the present invention are described below in conjunction with examples, which are set forth only to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1, a blocker comprises a housing, and further comprises a valve plate 17 opening and closing mechanism and an adjusting mechanism which are arranged on the housing, wherein the housing comprises a cylinder 5 and a lower end enclosure 24 arranged at the lower part of the cylinder 5, the cylinder 5 is provided with a water inlet 7 and a water outlet 19, the lower end enclosure 24 is provided with a water supply driving pipe 1, the housing is internally provided with a pore plate 6, and the water inlet 7 and the water outlet 19 are respectively arranged above and below the pore plate 6;

the valve plate 17 opening and closing mechanism comprises a valve rod 4, a valve plate 17, an opening and closing spring 21, a spring sleeve 20, a cylinder body 22 and a piston 2 arranged in the cylinder body 22, wherein the cylinder body 22 is arranged at the bottom of the cylinder body 5, one end of the valve rod 4 penetrates through a through hole of the orifice plate 6 to be connected with the valve plate 17, the other end of the valve rod 4 penetrates through the spring sleeve 20 to be connected with the piston 2, the spring sleeve 20 is arranged on the shell or the cylinder body 22, the opening and closing spring 21 is sleeved on the valve rod 4 between the spring sleeve 20 and the piston 2, and the lower end enclosure 24 is connected with the cylinder body 22;

the adjusting mechanism acts on the valve plate 17 for adjusting the opening height of the valve plate 17.

Still be equipped with scour protection mechanism on the casing, scour protection mechanism includes a plurality of circulation holes on the surface of a scour protection section of thick bamboo 16, a scour protection section of thick bamboo 16 sets up the outside of valve plate 17, the upper end of a scour protection section of thick bamboo 16 with the casing is connected, the lower extreme with valve plate 17 is connected. The anti-flushing cylinder 16 can reduce the pressure of water entering the shell through the water inlet 7, and the water after being reduced by the anti-flushing cylinder 16 and the pore plate 6 can stably flow to a district heating pipe network.

The adjusting mechanism comprises an adjusting seat 10, an adjusting screw rod 13 and an adjusting spring 14, the adjusting seat 10 is installed on the shell, the upper portion of the adjusting screw rod 13 is in threaded connection with the adjusting seat 10, a spring guide sleeve 15 is arranged on the lower portion of the adjusting screw rod 13, and the adjusting spring 14 is arranged between the spring guide sleeve 15 and the valve plate 17. The height of the adjusting screw rod 13 can be adjusted by rotating the adjusting screw rod 13, and the spring force of the adjusting spring 14 is controlled, so that the opening height of the valve plate 17 is adjusted, and the water flow and the pressure in a high area are controlled to achieve the purposes of constant flow and constant pressure.

The lower end of the adjusting screw rod 13 penetrates through the spring guide sleeve 15, the upper end of the valve rod 4 penetrates through the valve plate 17, the upper end of the adjusting spring 14 is sleeved on the outer side of the adjusting screw rod 13, and the lower end of the adjusting spring is sleeved on the outer side of the valve rod 4. The expansion and contraction of the adjustment spring 14 are guided to prevent the spring from being deflected and deformed, thereby preventing the acting force on the valve plate 17 from being affected.

The upper end of the anti-impact barrel 16 extends out of the shell and is provided with an upper sealing flange 9, and the upper sealing flange 9 is connected with the adjusting seat 10. The installation of the adjusting seat 10 is realized, and the maintenance of the adjusting mechanism is convenient.

The lower end of the opening and closing spring 21 is connected with the piston 2 through a locking nut 3. The lower end of the opening and closing spring 21 may be mounted on the piston 2 through a nut.

The valve plate 17 is provided with a sealing ring 18 at the position where it contacts the orifice plate 6. The sealing effect between the valve plate 17 and the orifice plate 6 is increased.

The shell further comprises an upper end enclosure 8, and the upper end of the anti-impact barrel 16 is connected with the upper end enclosure 8. The design of the upper end enclosure 8 is convenient for the installation and maintenance of all parts in the cylinder 5.

The adjusting seat is provided with a screw rod installation barrel, a packing cavity used for containing sealing packing 12 is further arranged between the adjusting screw rod 13 and the screw rod installation barrel, and the sealing packing 12 is arranged in the packing cavity through a fastening nut 11 and a sealing cap. Sealing of the upper end of the adjusting screw 13 is achieved.

And a lower sealing flange 23 is arranged on the lower end enclosure 24, and the lower sealing flange 23 is connected with the cylinder body 22 through bolts. The installation of the lower end enclosure 24 is realized, and the maintenance of the lower end enclosure 24 and various structures in the cylinder body 22 is facilitated.

The shell consists of a cylinder body 5 and an upper end enclosure and a lower end enclosure, the pore plate 6 is arranged in the cylinder body 5, the inlet and the outlet are arranged at the upper side and the lower side of the shell, and the axis of the pore plate is in the horizontal direction; the water supply driving pipe 1 is arranged in the center of the small end socket and is connected with the opening and closing device of the valve plate 17 through bolts after being assembled with the lower sealing flange 23; valve plate 17 headstock gear: the piston 2 is arranged in a cylinder body 22, the upper part of the cylinder body 22 is provided with a spring sleeve 20, the cylinder body 22 is welded with an end enclosure, the upper part of a valve rod 4 is fixed with a valve plate 17, an opening and closing spring 21 is arranged in the spring sleeve 20, the valve rod 4 penetrates into a pore plate 6 and is arranged in the spring sleeve 20, the opening and closing spring 21 and a central hole of the piston 2 are fixed by a nut, and the sealing part of the valve plate 17 is tightly attached to the pore plate 6; the adjusting device comprises: the anti-scouring cylinder 16 is assembled with the upper sealing flange 9 and then is arranged in the end socket, and the anti-scouring cylinder 16 is provided with a circulation hole; an adjusting screw rod 13 is screwed into a screw hole of an adjusting seat 10, a spring guide sleeve 15 is installed at the lower end of the adjusting screw rod 13, an adjusting spring 14 is installed in the spring guide sleeve 15, the other end of the adjusting spring 14 is installed on a valve plate 17, the adjusting seat 10 and an upper sealing flange 9 are fixed through bolts, and a sealing filler 12 is installed in a filler cavity of the adjusting seat 10 and is pressed through nuts.

The working process is as follows: the booster pump is started to pressurize hot water in the outdoor low-region heat supply pipe network, send the hot water to the high-layer radiator for heat release, and then enter the blocker to return to the low-region heat supply pipe network. When the system runs, the booster pump conveys water (heating medium) into a cavity of the small end enclosure 24 through the water supply driving pipe 1, the piston 2 overcomes the spring force to drive the valve rod 4 to move upwards under the action of pressure, the valve plate 17 is lifted, and a channel between a high region and a low region is opened; hot water enters the interior of the equipment through the water inlet, and is decompressed after passing through the anti-flushing cylinder 16 and the pore plate 6 so as to flow to a low-region heat supply pipe network. The water supply at the water inlet side controls the spring force of the adjusting spring 14 through manually adjusting the adjusting screw rod 13 so as to adjust the opening height of the valve plate 17, and controls the water flow and the pressure in a high area to achieve constant flow and constant pressure. When the booster pump stops operating, because the water pressure in the water supply driving pipe is reduced rapidly, and the piston 2 descends rapidly under the action of the opening and closing spring 20, the valve plate 17 is driven to close the circulation channel, the rapid cut-off of the high-region backwater is realized, the higher the high-region pressure is, the larger the force acting on the valve plate 17 is, and the better the sealing effect of the sealing ring 18 at the valve plate 17 is.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A blocker comprises a shell and is characterized by also comprising a valve plate opening and closing mechanism and an adjusting mechanism which are arranged on the shell, wherein the shell comprises a barrel and a lower end enclosure arranged at the lower part of the barrel;

2. The occluder of claim 1, wherein the housing further comprises a shock-proof mechanism, the shock-proof mechanism comprises a shock-proof cylinder, a plurality of flow holes are formed in the surface of the shock-proof cylinder, the shock-proof cylinder is arranged outside the valve plate, the upper end of the shock-proof cylinder is connected with the housing, and the lower end of the shock-proof cylinder is connected with the valve plate.

3. The blocker according to claim 2, wherein the adjustment mechanism includes an adjustment seat mounted on the housing, an adjustment screw having an upper portion threadedly coupled to the adjustment seat, and an adjustment spring having a lower portion provided with a spring guide sleeve, the adjustment spring being disposed between the spring guide sleeve and the valve plate.

4. The blocker according to claim 3, wherein the lower end of the adjustment screw passes through the spring guide sleeve, the upper end of the valve stem passes through the valve plate, the upper end of the adjustment spring is sleeved on the outside of the adjustment screw, and the lower end is sleeved on the outside of the valve stem.

5. The occluder of claim 3, wherein an upper end of the flush barrel extends out of the housing and is provided with an upper sealing flange which is connected to the adjustment seat.

6. The blocker of claim 1, wherein a lower end of the opening and closing spring is coupled to the piston by a locking nut.

7. The occluder of claim 1, wherein the valve plate is provided with a sealing ring at the location where it contacts the orifice plate.

8. The occluder of claim 2 or 5, wherein the housing further comprises an upper head, and an upper end of the surge drum is connected to the upper head.

9. The occluder of claim 3, wherein a screw rod mounting cylinder is provided on the adjustment seat, a packing chamber for containing a packing material is further provided between the adjustment screw rod and the screw rod mounting cylinder, and the packing material is disposed in the packing chamber through a fastening nut and a sealing cap.

10. The occluder of claim 1, wherein a lower sealing flange is provided on the lower head, and the lower sealing flange is connected to the cylinder by bolts.