Front filtering check valve

Abstract

The utility model discloses a front filtering check valve which comprises a valve body, a first connector is integrally formed at the top end of the valve body, a filtering mechanism is installed at the top end of the first connector, and a connecting mechanism is installed on the outer side of the valve body. A core component of the check valve is protected through a front filter, the silt abrasion risk is reduced, the service life of the valve is prolonged, a filter screen component can be rapidly detached and cleaned, the maintenance time is shortened to 1 / 3 of that of a traditional design, and shutdown loss is reduced; the integrated design saves the installation space, reduces the complexity of a pipeline system, is suitable for space-limited scenes such as underground pipe networks or compact equipment, and the collaborative design of the flow channel and the filter screen reduces the pressure drop loss; overall replacement caused by damage of the valve body is avoided, the operation and maintenance cost is reduced, the modular design supports independent recovery of the filter screen, and waste of metal materials is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve technical field, concretely is a kind of front filter check valve. BACKGROUND

[0002] Check valve is the closure for circular valve flap and rely on own weight and medium pressure to generate action to cut off medium backflow one kind of valve.It belongs to automatic valve, also called check valve, one-way valve, reflux valve or isolation valve.

[0003] At present, traditional check valve has no filtering function, only has one-way flow control function, cannot intercept impurities such as silt, particulate matter in pipe network, so that silt directly impacts valve core and sealing surface, accelerates wear, reduces sealing performance and service life, and the part of improved check valve of rear filter, since its filter device is located at the rear end of valve body, so silt has passed through valve core area, still can cause wear to it, and rear filter needs frequent cleaning, maintenance cost is high, in view of this, it is very necessary to design a kind of front filter check valve to solve this problem. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of front filter check valve, solve the problem that the existing check valve cannot intercept impurities such as silt, particulate matter in pipe network, so that silt directly impacts valve core and sealing surface, accelerates wear, reduces sealing performance and service life, and rear check valve needs frequent cleaning.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a kind of front filter check valve, including valve body, the top of the valve body is integrally formed with first connector, the top of the first connector is installed with filter mechanism, the outside of the valve body is installed with connecting mechanism;

[0006] The filter mechanism includes the skeleton adapted with the inside of valve body, and the outer wall and bottom end of skeleton are all fixed with filter screen, the top of the skeleton is installed with upper sealing ring, and the outer wall of upper sealing ring is in conformance with the inner wall of first connector, the top inside of first connector is connected with lock cover with screw thread, and the bottom end of lock cover is in conformance with upper sealing ring.

[0007] Preferably, the connecting mechanism includes the second connector integrally formed with the side wall of valve body, the inside of the second connector is installed with valve flap, and the outer wall of valve flap is in conformance with the inner wall of second connector and valve body respectively, the outside of the valve flap is installed with valve core, the end of the second connector away from valve body is connected with valve cap with screw thread, the outer wall of valve core is sleeved with conical spring, and both ends of conical spring are in conformance with valve core and valve cap respectively.

[0008] Preferably, the side wall of the valve body is integrally formed with third connector.

[0009] Preferably, the top end of the lock cover is processed with an internal hexagonal keyway.

[0010] Preferably, the front end face of the valve body is processed with an indicating arrow.

[0011] Advantages

[0012] The utility model provides a front filter check valve has the following advantages:

[0013] 1. Functional improvement:

[0014] Through the front filter protection check valve core component, reduce the silt abrasion risk, prolong the valve life, filter screen component can be quickly disassembled and cleaned, maintenance time is shortened to 1 / 3 of traditional design, reduces the downtime loss.

[0015] 2. Structural optimization:

[0016] Integrated design saves installation space, reduces pipeline system complexity, is applicable to space limited scene, such as underground pipe network or compact equipment etc., flow channel and filter screen collaborative design, reduce pressure drop loss.

[0017] 3. Economy and environmental protection:

[0018] Avoid the overall replacement caused by valve body damage, reduce operation and maintenance cost, modular design supports filter screen individual recovery, reduces metal material waste. DETAILED DESCRIPTION

[0019] Figure 1 It is the structural schematic diagram of the utility model.

[0020] Figure 2 It is the explosion drawing of the utility model.

[0021] Figure 3 It is the left view of the utility model.

[0022] Figure 4 It is the right view of the utility model.

[0023] In the drawing: 1, valve body;2, valve cap;3, valve flap;4, conical spring;5, valve core;6, framework;7, upper sealing ring;8, lock cover;9, third connecting head;10, first connecting head;11, filter screen;12, internal hexagonal keyway;13, second connecting head;14, indicating arrow. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0025] Please refer to Figures 1-4 The present application provides a technical scheme: a front filter check valve, comprising a valve body 1, the top end of the valve body 1 is integrally formed with a first connector 10, the top end of the first connector 10 is provided with a filter mechanism, and the outer side of the valve body 1 is provided with a connecting mechanism;

[0026] The filter mechanism comprises a framework 6 matched with the inside of the valve body 1, and the outer wall and the bottom end of the framework 6 are fixedly connected with filter screens 11, the top end of the framework 6 is provided with an upper sealing ring 7, and the outer wall of the upper sealing ring 7 is matched with the inner wall of the first connector 10, the top end of the first connector 10 is screw-connected with a lock cover 8, and the bottom end of the lock cover 8 is matched with the upper sealing ring 7;

[0027] The outer wall of the first connector is processed with external threads, and the outer wall of the lock cover 8 is processed with external threads, so that the lock cover 8 can be installed on the first connector 10, the framework 6 and the filter screen 11 are made of stainless steel, the mesh number of the filter screen 11 is 15 to 20, the valve body 1 is further processed with a key groove below the internal threads, the framework 6 has protruding diameters on both sides, and the protruding diameters are used in cooperation with the key groove for installation, the cooperation gap cannot be more than 1 mm, when the filter screen 11 is installed, the side without the filter screen 11 faces the water inlet direction, so that impurities in the water can be collected when the water passes through.

[0028] The connecting mechanism comprises a second connector 13 integrally formed with the side wall of the valve body 1, the inside of the second connector 13 is provided with a valve flap 3, the outer wall of the valve flap 3 is matched with the inner walls of the second connector 13 and the valve body 1 respectively, the outer side of the valve flap 3 is provided with a valve core 5, the outer wall of the valve core 5 is sleeved with a conical spring 4, and the two ends of the conical spring 4 are matched with the valve core 5 and the valve cap 2 respectively;

[0029] The inner wall of the second connector 13 is processed with internal threads, and the outer wall of the valve cap 2 is processed with external threads, so that the valve cap 2 can be installed on the second connector 13, when the second connector 13 is connected with the valve cap 2, the valve core 5 with a silica gel sealing gasket is matched with the sealing surface in the second connector 13, the valve cap 3 with a guide hole is screw-coupled with the second connector 13, the conical spring 4 with a pushing force of 0.01 Mpa is arranged in the middle, the valve core 5 is required to be flexible to open under water pressure and to be sealed when there is no water pressure.

[0030] The valve body 1 is integrally formed with a third connector 9 on the side wall.

[0031] The third connector 9 is internally threaded to facilitate connection with an external water pipe connector.

[0032] The lock cap 8 is internally hexagonal at the top end.

[0033] The valve body 1 is provided with an indication arrow 14 on the front end face.

[0034] The components in the present case are sequentially connected by those skilled in the art, and the specific connection and operation sequence should be referred to the working principle described below, and the detailed connection means is a well-known technology in the art, and the working principle and process are mainly introduced below.

[0035] When the device needs to be used, the skeleton 6 can be installed into the valve body 1 and the first connector 10 according to the indication arrow 14 on the valve body 1, and the opening end of the filter screen 11 on the skeleton 6 is opposite to the indication end of the indication arrow 14, then the upper sealing ring 7 is installed into the first connector 10, and the lock cap 8 is installed into the first connector 10 by hand or hexagonal wrench, then the valve flap 3, the valve core 5, and the conical spring 4 are sequentially installed into the second connector 13, then the valve cap 2 is connected with the second connector 13, and finally the third connector 9 and the valve cap 2 are respectively connected with the pipeline.

[0036] It should be noted that in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the statement "including a limited element" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0037] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefiltering check valve comprising a valve body (1), characterized in that: The top end of the valve body (1) is integrally provided with a first connector (10), the top end of the first connector (10) is provided with a filtering mechanism, and the outer side of the valve body (1) is provided with a connecting mechanism. The filtering mechanism comprises a framework (6) matched with the inside of the valve body (1), the outer wall and the bottom end of the framework (6) are fixedly connected with filter screens (11), the top end of the framework (6) is provided with an upper sealing ring (7), the outer wall of the upper sealing ring (7) is matched with the inner wall of the first connector (10), the top end of the first connector (10) is screw-connected with a lock cover (8), and the bottom end of the lock cover (8) is matched with the upper sealing ring (7).

2. A prefilter check valve according to claim 1, wherein The connecting mechanism comprises a second connector (13) integrally provided with the side wall of the valve body (1), the inside of the second connector (13) is provided with a valve clack (3), the outer wall of the valve clack (3) is matched with the inner walls of the second connector (13) and the valve body (1) respectively, the outer side of the valve clack (3) is provided with a valve core (5), the end of the second connector (13) away from the valve body (1) is screw-connected with a valve cap (2), the outer wall of the valve core (5) is sleeved with a conical spring (4), and the two ends of the conical spring (4) are matched with the valve core (5) and the valve cap (2) respectively.

3. A prefilter check valve according to claim 1, wherein The side wall of the valve body (1) is integrally provided with a third connector (9).

4. A prefilter check valve according to claim 1, wherein The top end of the lock cover (8) is processed with an internal hexagon plum blossom groove (12).

5. A prefilter check valve according to claim 1 wherein, The front end face of the valve body (1) is processed with an indicating arrow (14).

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