Check valve structure with wear-resistant rubber flap

Abstract

The utility model relates to the field of check valves, and discloses a check valve structure with a wear-resistant rubber clack, which comprises a water inlet pipe and a check valve body shell connected with the water inlet pipe, the check valve body shell is divided into a filter tank and a check tank by a middle plate, the filter tank is embedded with a filter component, and the check tank is provided with a check component; a slag-water mixture is introduced into the filter tank through the water inlet pipe and is filtered by the filter assembly, the slag-water mixture enters the insertion plate through the filter water inlet hole, macromolecular filter residues are filtered out under the filtering action of the filter screen and are accumulated in the filter residue storage tank to be collected, and the filter residues are extracted and cleaned after being accumulated to a certain storage amount. Friction damage of macromolecular filter residues to the check valve is avoided; the novel check valve is provided with the wear-resistant rubber clack, small molecule filter residues passing through the filter assembly can pass through the water passing pipe along with water flow and collide with the check valve, the wear-resistant rubber clack can conduct second wear-resistant protection, and the service life of the check valve is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of check valves, in particular to a check valve structure with a wear-resistant rubber flap. Background Art

[0002] The medium of the blast furnace slag treatment system is a slag-water mixture, in which the content of slag is high, and it causes great wear to the equipment used in the blast furnace slag treatment system, resulting in high maintenance costs. The working environment of the check valve used in the blast furnace slag treatment system can be imagined. The purpose of using the check valve is mainly to prevent the reverse rotation of the slurry pumps connected in parallel in the system and avoid accidents. Practice shows that a small amount of leakage of the check valve used in the blast furnace slag treatment system will not have a negative impact. Currently, the check valves used in the blast furnace slag treatment system are all general-purpose check valves, and the general-purpose check valves all emphasize sealing performance. Their disadvantages are that their anti-wear performance is ignored, their wear resistance is very poor, and their service life is greatly discounted.

[0003] Therefore, a check valve structure with a wear-resistant rubber flap is needed to solve this problem. Summary of the Utility Model

[0004] A check valve structure with a wear-resistant rubber flap includes a water inlet pipe and a check valve body housing connected to the water inlet pipe. The check valve body housing is divided into a filter tank and a check tank by an intermediate plate. The filter tank is fitted with a filter assembly, and the check tank is provided with a check assembly. The check assembly includes a wear-resistant rubber flap. A weight plate is connected above the wear-resistant rubber flap, and a check shaft is connected above the weight plate. The upper end of the check shaft is fitted into a check shaft movement tube.

[0005] Preferably, a check shaft movement tube is installed on the top surface of the check valve body housing. A flange is provided at the upper end of the check shaft movement tube, a valve cover is provided above the flange, and several fixing nails are provided on the valve cover. A water outlet pipe is communicated with one side of the check tank.

[0006] Preferably, a water passing cylinder is provided in the middle of the intermediate plate. The water passing cylinder is fitted with the check assembly, and a filter assembly is provided below the intermediate plate.

[0007] Preferably, the filter assembly includes an insertion plate. One end of the insertion plate is provided with an insertion plate baffle. Filter water inlet holes are provided on one side of the insertion plate, and a filter residue storage tank is provided on the other side. A filter screen is fitted in the filter residue storage tank.

[0008] Preferably, the check shaft is provided with a check shaft sliding rod, the check shaft movement tube is provided with a sliding rod chute, and the check shaft sliding rod is fitted in the sliding rod chute.

[0009] Beneficial effects: The new type passes the slag-water mixture into the filter tank through the water inlet pipe. After being filtered by the filter assembly, the slag-water mixture enters the plug board through the filter water inlet hole. The macromolecular filter residues are filtered out by the filtering action of the filter net and accumulated in the filter residue storage tank for collection. When the storage amount reaches a certain level, it is pumped and cleaned, avoiding the frictional damage of the macromolecular filter residues to the check valve. The check valve of this new type is installed with wear-resistant rubber flaps. The small-molecular filter residues passing through the filter assembly will flow through the water pipe with the water flow and collide with the check valve. The wear-resistant rubber flaps can provide a second layer of wear-resistant protection, greatly extending the service life of the check valve. Brief Description of the Drawings

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary. For those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained based on the provided drawings.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 It is a structural diagram of the filter assembly of the present invention;

[0013] Figure 3 It is a schematic diagram of the structure of the check valve assembly of the present invention.

[0014] Legend Explanation:

[0015] 1. Water inlet pipe; 2. Check valve body housing; 3. Intermediate plate; 4. Filter tank; 5. Check valve tank; 6. Filter assembly; 7. Check valve assembly; 21. Check valve shaft movement pipe; 22. Flange; 23. Valve cover; 24. Fixed nail; 8. Water outlet pipe; 31. Water passing cylinder; 61. Plug board; 62. Plug board baffle; 63. Filter water inlet hole; 64. Filter residue storage tank; 65. Filter net; 71. Wear-resistant rubber flap; 72. Load-bearing plate; 73. Check valve shaft; 731. Check valve shaft sliding rod; 211. Sliding rod chute. Specific Embodiments

[0016] The following will further describe the present invention in detail with reference to the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0017] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0018] In addition, "a plurality of" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0019] Please refer to the attached drawings of the specification Figures 1 - 3 , a check valve structure with a wear-resistant rubber flap, including a water inlet pipe 1 and a check valve body housing 2 connected to the water inlet pipe 1. The check valve body housing 2 is divided into a filter tank 4 and a check tank 5 by an intermediate plate 3. The filter tank 4 is fitted with a filter assembly 6, and the check tank 5 is provided with a check assembly 7. The check assembly 7 includes a wear-resistant rubber flap 71. Above the wear-resistant rubber flap 71 is connected a weight plate 72, and above the weight plate 72 is connected a check shaft 73. The upper end of the check shaft 73 is fitted into a check shaft movement tube 21. The filter residue mixture impacts the wear-resistant rubber flap 71 through water pressure, and the wear-resistant rubber flap 71 can play a role in preventing damage to the check valve. After the water pressure disappears, the check valve will fall due to the action of the weight plate 72 and block the water passing tube 31 again to prevent water from flowing back.

[0020] Furthermore, a check shaft movement tube 21 is installed on the top surface of the check valve body housing 2. At the upper end of the check shaft movement tube 21 is provided a flange 22, and at the upper end of the flange 22 is provided a valve cover 23. On the valve cover 23 are provided several fixing nails 24. One side of the check tank 5 communicates with a water outlet pipe 8. The valve cover 23 can be opened by pulling out the fixing nails 24, so as to take out the check assembly in the check shaft movement tube 21 for maintenance.

[0021] Furthermore, a water passing tube 31 is provided in the middle of the intermediate plate 3. The water passing tube 31 is fitted with the check assembly 7, and below the intermediate plate 3 is provided the filter assembly 6.

[0022] Furthermore, the filter assembly 6 includes an insertion plate 61. At one end of the insertion plate 61 is provided an insertion plate partition 62. On one side of the insertion plate 61 are provided filter water inlet holes 63, and on the other side is provided a filter residue storage tank 64. The filter residue storage tank 64 is fitted with a filter net 65. The slag water mixture enters the insertion plate 61 through the filter water inlet holes 63, and the macromolecular filter residues are filtered out by the filtering action of the filter net 65 and accumulate in the filter residue storage tank 64 for collection. When the storage amount reaches a certain level, it is pumped out for cleaning, avoiding the frictional damage of the macromolecular filter residues to the check valve.

[0023] Further, the check shaft 73 is provided with a check shaft sliding rod 731, the check shaft moving tube 21 is provided with a sliding rod chute 211, and the check shaft sliding rod 731 is fitted in the sliding rod chute 211.

[0024] First, the slag-water mixture enters the filter tank 4 from the water inlet pipe 1, enters the plugboard 61 through the filtered water inlet hole 63, and the macromolecular filter residues are filtered out by the filtering action of the filter net 65 and accumulated in the filter residue storage tank 64 for collection. When the storage amount reaches a certain level, it can be extracted and cleaned through the plugboard baffle 62. The filtered filter residue mixture rises by the hydraulic pressure hitting the wear-resistant rubber flap 71, thereby driving the check shaft 73 to rise in the check shaft moving tube 21. The water flow enters the check groove 5 through the water passing cylinder 31 and then flows out through the water outlet pipe 8. After the hydraulic pressure disappears, the check valve will fall due to the action of the weight plate 72 and block the water passing cylinder 31 again to prevent water from flowing back. When the check valve is damaged and needs to be repaired, the valve cover 23 can be opened by pulling out the fixing nail 24, so as to take out the check assembly in the check shaft moving tube 21 for repair.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. 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.

[0026] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0027] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A check valve structure with a wear-resistant rubber flap, comprising a water inlet pipe (1) and a check valve body shell (2) connected to the water inlet pipe (1), characterized in that: The check valve body shell (2) is divided into a filter groove (4) and a check groove (5) by an intermediate plate (3); the filter groove (4) is embedded with a filter assembly (6); the check groove (5) is provided with a check assembly (7); the check assembly (7) comprises a wear-resistant rubber flap (71); a weight plate (72) is connected to the top of the wear-resistant rubber flap (71); a check shaft (73) is connected to the top of the weight plate (72); the upper end of the check shaft (73) is embedded with a check shaft moving tube (21).

2. A check valve structure with a wear-resistant rubber flap according to claim 1, characterized in that: A check shaft moving tube (21) is installed on the top surface of the check valve body shell (2), a flange (22) is provided at the upper end of the check shaft moving tube (21), a valve cover (23) is provided at the upper end of the flange (22), a plurality of fixing nails (24) are provided on the valve cover (23), and one side of the check groove (5) is connected to a water outlet pipe (8).

3. A check valve structure with a wear-resistant rubber flap according to claim 1, characterized in that: A water-passing cylinder (31) is provided in the middle of the middle plate (3), and the water-passing cylinder (31) is engaged with a check assembly (7). A filter assembly (6) is provided below the middle plate (3).

4. A check valve structure with a wear-resistant rubber flap according to claim 1, characterized in that: The filter assembly (6) comprises a plug plate (61), one end of which is provided with a plug plate baffle (62), one side of the plug plate (61) is provided with a filter water inlet hole (63), and the other side is provided with a filter residue storage tank (64), and the filter residue storage tank (64) is embedded with a filter screen (65).

5. A check valve structure with a wear-resistant rubber flap according to claim 1, characterized in that: The non-return shaft (73) is provided with a non-return shaft sliding rod (731), the non-return shaft moving tube (21) is provided with a sliding rod sliding groove (211), and the non-return shaft sliding rod (731) is embedded in the sliding rod sliding groove (211).

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