Backwater blocker of heating equipment

Abstract

The utility model discloses a backwater blocker of heating equipment, which comprises a shell and further comprises a sealing assembly, the sealing assembly comprises a springback unit arranged in the shell, a valve body is arranged at the bottom of the springback unit, a valve core is arranged at the bottom end of the springback unit and located in an inner cavity of the valve body, and a valve seat is arranged at the bottom of the valve body; the fixing assembly is arranged at the joint of the valve body and the valve seat, the fixing assembly comprises rotating bolts symmetrically arranged on the sides of the valve seat, the outer sides of the rotating bolts are sleeved with clamping strips, and positioning parts are symmetrically arranged on the sides of the valve body; the clamping strip rotating around the rotating bolt in the fixing assembly and the positioning part on the side of the valve body are inserted, clamped and fixed in a penetrating mode, compared with the mode that bolts and nuts are adopted to fix the valve body and the valve seat in a penetrating mode, the design avoids the situation that maintenance personnel disassemble the valve seat difficultly due to nut corrosion, quick disassembly of the valve seat is achieved, and the service life of the valve seat is prolonged. The influence on the replacement of the damaged valve core is avoided.

Description

Technical Field

[0001] The utility model relates to the field of heating equipment, and particularly relates to a return water blocker for heating equipment. Background Art

[0002] The return water blocker of heating equipment is a device used in a heating system, and its main function is to control the water flow in the return water pipeline to achieve the stable operation and efficient heating of the system;

[0003] According to the technical means described in a return water blocker with the application number 201420564447.7, in this utility model, the return water blocker has a simple structure and is convenient to install and use. By using the pressure difference of the system to drive the piston to act, it can automatically realize switching and pressure reduction, optimize the heating system of high-rise buildings, effectively solve the problems of pipeline corrosion and imbalance caused by air entering the return water pipe network, realize separate constant pressure for the return water in high and low zones, meet the heating needs of high-rise direct-connected heating units, and greatly improve the reliability of the heating system;

[0004] However, its valve core is generally cast iron wrapped with rubber. After the valve core contacts and presses against the valve seat for a long time, the rubber is damaged, resulting in the return water flowing out from the damaged gap between the valve core and the valve seat, affecting the normal use of the blocker. Therefore, it is necessary to open the valve seat and disassemble and replace the valve core. The valve seat and the valve body are fixed by bolts and nuts. The nuts and bolts are prone to rust in a humid state, making it difficult for the nuts to rotate and disengage from the bolts. Disassembling the valve seat takes time and affects the replacement and maintenance of the valve core. Therefore, to solve the above problems, a new return water blocker for heating equipment is needed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a return water blocker for heating equipment to solve the problems put forward in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A return water blocker for heating equipment, including a housing, further including:

[0007] A closing component for adjusting and blocking the return water flow. The closing component includes a resilient unit arranged inside the housing. A valve body is arranged at the bottom of the resilient unit. A valve core for blocking water is arranged at the bottom end of the resilient unit and inside the cavity of the valve body. A valve seat for sealing the valve body is arranged at the bottom of the valve body.

[0008] A fixing component is arranged at the connection between the valve body and the valve seat. The fixing component is used for fixing the valve seat. The fixing component includes rotating bolts symmetrically arranged on the side of the valve seat. A clamping strip is sleeved outside the rotating bolts. Positioning parts for clamping the clamping strip are symmetrically arranged on the side of the valve body.

[0009] Preferably, the positioning portion includes a positioning bolt disposed outside the valve body. A rotating sleeve is sleeved outside the positioning bolt, and the rotating sleeve is used for the rotating insertion of the clamping strip.

[0010] Preferably, a clamping groove for the insertion of the rotating sleeve is formed on the side of the clamping strip, and an isolation ring for isolating the side of the clamping strip from the end of the rotating bolt is disposed outside the rotating bolt.

[0011] Preferably, a connecting insertion ring is provided at the top of the valve seat. The top of the connecting insertion ring is inserted and connected to the bottom of the valve body, and a connecting water-blocking ring for water isolation is provided at the top of the connecting insertion ring.

[0012] Preferably, a locking bolt is inserted and connected to the bottom of the valve core, and the locking bolt is used to fix the valve core and the locking bolt of the elastic return unit.

[0013] Preferably, a water inlet pipe is inserted and connected to one side of the housing. The end of the water inlet pipe is inserted and connected to the side of the valve body. A water outlet pipe is inserted and connected to the other side of the housing, and the water outlet pipe is used for the outflow of the heating return water.

[0014] Preferably, a sludge cleaning pipe is provided at the bottom of the housing, and the sludge cleaning pipe is used for the outflow of the stains in the housing.

[0015] The technical effects and advantages of the present utility model:

[0016] In the present utility model, a fixing component is provided at the connection between the valve body and the valve seat. By using the clamping strip that rotates around the rotating bolt in the fixing component to be inserted and clamped with the positioning portion on the side of the valve body for fixation, compared with the method of using bolts and nuts to insert and fix the valve body and the valve seat, this design avoids the difficulty of maintenance personnel in disassembling the valve seat due to the rust of the nuts, realizes the rapid disassembly of the valve seat, and avoids affecting the replacement of the damaged valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the present utility model.

[0018] Figure 2 is a sectional view of the whole of the present utility model.

[0019] Figure 3 is the present utility model Figure 2 an enlarged structural view of part A in

[0020] Figure 4 is a side view of the fixing component of the present utility model.

[0021] In the figure: 1. Housing; 101. Water inlet pipe; 102. Water outlet pipe; 103. Mud cleaning pipe; 2. Rebound unit; 3. Valve body; 4. Valve core; 5. Valve seat; 501. Connecting insertion ring; 502. Connecting water blocking ring; 6. Locking bolt; 7. Fixing component; 701. Card strip; 7011. Card slot; 702. Positioning bolt; 7021. Rotating sleeve; 703. Rotating bolt; 704. Isolation ring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0023] The present invention provides a Figures 1-4 return water blocker for a heating device as shown in the figure, including a housing 1, and also including a sealing component and a fixing component 7;

[0024] Specifically, the sealing component is used to adjust and block the return water flow. The sealing component includes a rebound unit 2 arranged inside the housing 1. A valve body 3 is arranged at the bottom of the rebound unit 2. A valve core 4 for blocking water is arranged at the bottom end of the rebound unit 2 and inside the inner cavity of the valve body 3. A valve seat 5 for sealing the valve body 3 is arranged at the bottom of the valve body 3;

[0025] It should be noted that the overall structure formed by the rebound unit 2 and the valve body 3 refers to the working principle of a return water blocker with the application number 201420564447.7. A locking bolt 6 is inserted through the bottom of the valve core 4. The locking bolt 6 is used to fix the valve core 4 and the rebound unit 2. A threaded hole for the insertion of the locking bolt 6 is opened at the bottom end of the rebound unit 2;

[0026] Specifically, the fixing component 7 is arranged at the connection between the valve body 3 and the valve seat 5. The fixing component 7 is used to fix the valve seat 5. The fixing component 7 includes rotating bolts 703 symmetrically arranged on the side of the valve seat 5. A card strip 701 is sleeved outside the rotating bolts 703,

[0027] It should be noted that the rotating bolts 703 are welded and fixed to the side of the valve seat 5. The card strip 701 can rotate around the rotating bolts 703. An isolation ring 704 for isolating the side of the card strip 701 from the end of the rotating bolts 703 is arranged outside the rotating bolts 703. The isolation ring 704 is made of rubber material;

[0028] Positioning parts for clamping the card strip 701 are symmetrically arranged on the side of the valve body 3;

[0029] Specifically, the positioning part includes a positioning bolt 702 arranged on the outer side of the valve body 3. A rotating sleeve 7021 is sleeved on the outer side of the positioning bolt 702, and the rotating sleeve 7021 is used for the rotating insertion of the clamping strip 701.

[0030] It should be noted that the positioning bolt 702 is fixedly welded to the outer side of the valve body 3. The rotating sleeve 7021 is made of polypropylene material and can rotate around the positioning bolt 702. A clamping groove 7011 for the insertion of the rotating sleeve 7021 is provided on the side of the clamping strip 701.

[0031] A connecting insertion ring 501 is provided on the top of the valve seat 5. The top of the connecting insertion ring 501 is inserted and connected to the bottom of the valve body 3. A connecting water-blocking ring 502 for water blocking is provided on the top of the connecting insertion ring 501.

[0032] It should be noted that the connecting insertion ring 501 is fixedly welded to the valve seat 5, the connecting water-blocking ring 502 is adhesively bonded to the connecting insertion ring 501, and an annular groove for the insertion of the connecting insertion ring 501 is provided at the bottom of the valve body 3.

[0033] A water inlet pipe 101 is inserted and connected to one side of the housing 1. The end of the water inlet pipe 101 is inserted and connected to the side of the valve body 3. A water outlet pipe 102 is inserted and connected to the other side of the housing 1. The water outlet pipe 102 is used for the outflow of the heating return water. A sludge cleaning pipe 103 is provided at the bottom of the housing 1. The sludge cleaning pipe 103 is used for the outflow of the stains in the housing 1.

[0034] It should be noted that the insertion part of the water inlet pipe 101 and the housing 1 is fixed by welding, the insertion part of the water inlet pipe 101 and the valve body 3 is fixed by welding, and the insertion part of the water outlet pipe 102 and the housing 1 is fixed by welding.

[0035] During the actual use process, by providing a fixing component 7 at the connection between the valve body 3 and the valve seat 5, the clamping strip 701 rotating around the rotating bolt 703 in the fixing component 7 is inserted and clamped with the positioning part on the side of the valve body 3. Compared with fixing the valve body 3 and the valve seat 5 by inserting bolts and nuts, this design avoids the difficulty of maintenance personnel in disassembling the valve seat 5 due to the rust of the nuts, realizes the rapid disassembly of the valve seat 5, and avoids affecting the replacement of the damaged valve core 4.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A return water blocker for a heating device, comprising a housing (1), characterized in that, It further includes: A closing component for regulating and blocking the return water flow. The closing component includes a resilient unit (2) disposed inside the housing (1). A valve body (3) is provided at the bottom of the resilient unit (2). A valve core (4) for blocking water is disposed at the bottom end of the resilient unit (2) and inside the inner cavity of the valve body (3). A valve seat (5) for sealing the valve body (3) is provided at the bottom of the valve body (3). A fixing component (7) is disposed at the connection between the valve body (3) and the valve seat (5). The fixing component (7) is used for fixing the valve seat (5). The fixing component (7) includes rotating bolts (703) symmetrically disposed on the side of the valve seat (5). A clamping strip (701) is sleeved outside the rotating bolts (703). Positioning parts for clamping the clamping strip (701) are symmetrically disposed on the side of the valve body (3).

2. The water return blocker of a heating device according to claim 1, characterized in that, The positioning part includes positioning bolts (702) disposed outside the valve body (3). A rotating sleeve (7021) is sleeved outside the positioning bolts (702). The rotating sleeve (7021) is used for the rotating insertion of the clamping strip (701).

3. The water return blocker of a heating device according to claim 1, characterized in that, A clamping groove (7011) for the insertion of the rotating sleeve (7021) is formed on the side of the clamping strip (701). An isolation ring (704) for isolating the side of the clamping strip (701) from the end of the rotating bolt (703) is provided outside the rotating bolt (703).

4. The water return blocker of a heating device according to claim 3, characterized in that, A connecting insertion ring (501) is provided at the top of the valve seat (5). The top of the connecting insertion ring (501) is inserted and connected to the bottom of the valve body (3). A connecting water-blocking ring (502) for blocking water is provided at the top of the connecting insertion ring (501).

5. The water return blocker of a heating device according to claim 1, characterized in that, A locking bolt (6) is inserted and connected to the bottom of the valve core (4). The locking bolt (6) is used for fixing the valve core (4) and the resilient unit (2).

6. The water return blocker of a heating device according to claim 1, characterized in that, A water inlet pipe (101) is inserted and connected to one side of the housing (1). The end of the water inlet pipe (101) is inserted and connected to the side of the valve body (3). A water outlet pipe (102) is inserted and connected to the other side of the housing (1). The water outlet pipe (102) is used for the outflow of the heating return water.

7. The water return blocker of a heating device according to claim 6, characterized in that, A sludge cleaning pipe (103) is provided at the bottom of the housing (1). The sludge cleaning pipe (103) is used for the outflow of the stains in the housing (1).

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