阅读说明：本技术 一种具有止回功能的密封闸阀 (Sealing gate valve with non-return function ) 是由 黄明亮 古冠水 于 2020-04-28 设计创作，主要内容包括：本发明涉及阀门设备技术领域,更具体地,涉及一种具有止回功能的密封闸阀,包括闸阀,所述闸阀包括阀体、阀盖、压盖、阀杆；所述阀盖的一端与阀体的上开口处密封连接,另一端与压盖密封连接；所述阀杆穿过压盖和阀盖伸入阀体内；所述阀体内设有闸板,所述阀杆的一端通过阀杆螺母与闸板插接,另一端连接有手轮结构；所述阀体设有进液端和出液端,所述阀体内连接有阀体支架,所述阀体内设有止回机构,所述止回机构包括阀瓣和套接于阀瓣上的弹性件,所述阀瓣的一端插接于阀体支架上,另一端与进液端相抵。本发明便于安装、占用空间小,具有防止回以及防水锤的功能,且能够节约成本。(The invention relates to the technical field of valve equipment, in particular to a sealing gate valve with a non-return function, which comprises a gate valve, wherein the gate valve comprises a valve body, a valve cover, a gland and a valve rod; one end of the valve cover is hermetically connected with the upper opening of the valve body, and the other end of the valve cover is hermetically connected with the gland; the valve rod penetrates through the gland and the valve cover and extends into the valve body; a flashboard is arranged in the valve body, one end of the valve rod is inserted into the flashboard through a valve rod nut, and the other end of the valve rod is connected with a hand wheel structure; the valve body is provided with a liquid inlet end and a liquid outlet end, a valve body support is connected in the valve body, a check mechanism is arranged in the valve body and comprises a valve clack and an elastic piece sleeved on the valve clack, one end of the valve clack is inserted into the valve body support, and the other end of the valve clack is abutted to the liquid inlet end. The invention is convenient to install, occupies small space, has the functions of preventing return and water hammer, and can save cost.)

1. A sealing gate valve with a non-return function comprises a gate valve (1), wherein the gate valve (1) comprises a valve body (11), a valve cover (13), a gland (14) and a valve rod (16); one end of the valve cover (13) is hermetically connected with the upper opening of the valve body (11), and the other end of the valve cover is hermetically connected with the gland (14); the valve rod (16) penetrates through the gland (14) and the valve cover (13) and extends into the valve body (11); a flashboard (12) is arranged in the valve body (11), one end of the valve rod (16) is inserted into the flashboard (12) through a valve rod nut (17), and the other end of the valve rod is connected with a hand wheel structure (18); valve body (11) are equipped with feed liquor end (111) and play liquid end (112), valve body (11) in-connection has valve body support (113), its characterized in that, be equipped with non return mechanism (2) in valve body (11), non return mechanism (2) include valve clack (22) and cup joint elastic component (23) on valve clack (22), the one end of valve clack (22) is pegged graft on valve body support (113), and the other end offsets with feed liquor end (111).

2. The sealing gate valve with non-return function according to claim 1, characterized in that one end of the elastic member (23) is abutted against the valve body support (113) and the other end is abutted against the valve flap (22).

3. A sealing gate valve with non-return function according to claim 2, characterized in that the non-return valve seat (21) is connected with the inlet end (111) in a sealing way.

4. The sealing gate valve with the non-return function according to claim 3, characterized in that a sleeve (24) is inserted on the valve body support (113), one end of the valve flap (22) is inserted in the sleeve (24) in a sliding manner, and the other end of the valve flap is abutted against the non-return valve seat (21).

5. A sealing gate valve with non-return function according to claim 3, characterized in that the inlet end (111) is connected with the non-return valve seat (21) by a sealing ring (25).

6. The sealing gate valve with non-return function according to claim 1, characterized in that the valve flap (22) is provided with a sealing sleeve (26).

7. The sealing gate valve with non-return function according to claim 1, characterized in that at least four stem gaskets (6) are sleeved on the stem (16).

8. A sealing gate valve with non-return function according to claim 1, characterized in that the flange seal (3) is connected between the valve body (11) and the valve cover (13).

9. The sealing gate valve with the non-return function is characterized in that the valve rod (4) is connected with the valve cover (13) through the edge opening clamping sleeve (4), and the valve cover (13) is connected with the gland (14) through the gland sealing ring (5).

10. The sealing gate valve with non-return function according to claim 1, characterized in that a dust ring (15) is attached to the gland (14).

Technical Field

The invention relates to the technical field of valve equipment, in particular to a sealing gate valve with a non-return function.

Background

In the use occasion of pump room water pump, in order to prevent that the medium refluence from resulting in the water pump to be destroyed to and in order to facilitate the maintenance of gate valve, generally need install two kinds of valves of check valve and service valve in the exit of water pump. The structure that installs two valves together additional has with high costs, occupation space is big, the loaded down with trivial details scheduling problem of installation, and the gate valve on the present market does not have the function of waterproof hammer.

Disclosure of Invention

The invention aims to overcome the defect that the existing gate valve cannot have the functions of non-return and water hammer prevention at the same time, and provides the sealing gate valve with the non-return function, which is convenient to install, small in occupied space, capable of preventing the non-return and water hammer and capable of saving cost.

In order to solve the technical problems, the invention adopts the technical scheme that:

the sealing gate valve with the non-return function comprises a gate valve, wherein the gate valve comprises a valve body, a valve cover, a gland and a valve rod; one end of the valve cover is hermetically connected with the upper opening of the valve body, and the other end of the valve cover is hermetically connected with the gland; the valve rod penetrates through the gland and the valve cover and extends into the valve body; a flashboard is arranged in the valve body, one end of the valve rod is inserted into the flashboard through a valve rod nut, and the other end of the valve rod is connected with a hand wheel structure; the valve body is provided with a liquid inlet end and a liquid outlet end, a valve body support is connected in the valve body, a check mechanism is arranged in the valve body and comprises a valve clack and an elastic piece sleeved on the valve clack, one end of the valve clack is inserted into the valve body support, and the other end of the valve clack is abutted to the liquid inlet end.

The invention relates to a sealing gate valve with a non-return function.A non-return mechanism is arranged in a valve body, and the non-return function is realized by the elastic expansion of a valve clack on a valve body bracket; when liquid flows in from the liquid inlet end of the valve body, the thrust of the liquid pushes the valve clack, so that the elastic piece on the valve clack is extruded, and the valve clack is opened, so that the liquid can pass through the sealing gate valve; when liquid in the gate valve stops flowing suddenly, the thrust of liquid will reduce, and the elasticity of elastic component makes the valve clack resume to the normal position this moment, and the valve clack supports on the feed liquor end, can prevent liquid refluence, can also prevent simultaneously that the water hammer striking seals the gate valve.

Preferably, one end of the elastic piece is abutted against the valve body support, and the other end of the elastic piece is abutted against the valve clack.

Preferably, a check valve seat is connected to the liquid inlet end in a sealing mode. The setting of the check valve seat enables the check mechanism to form an effective soft seal.

Preferably, the valve body support is inserted with a sleeve, one end of the valve clack is inserted in the sleeve in a sliding mode, and the other end of the valve clack abuts against the check valve seat. The arrangement of the sleeve can reduce the abrasion of the valve body support caused by the sliding of the valve clack.

Preferably, the liquid inlet end is connected with the check valve seat through a sealing ring. The sealing ring is arranged to enable the liquid inlet end and the check valve seat to be sealed.

Preferably, a sealing sleeve is arranged on the valve clack. The valve clack can be conveniently detached and maintained due to the arrangement of the sealing sleeve, and interchangeability is improved.

Preferably, at least four valve rod sealing rings are sleeved on the valve rod. The valve rod sealing ring is arranged to enable the sealing between the valve rod and the valve cover and between the valve rod and the gland to be realized.

Preferably, the valve body is connected with the valve cover through a flange sealing ring. The arrangement of the flange sealing ring enables the valve body and the valve cover to be sealed.

Preferably, the valve rod is connected with the valve cover through an edge opening clamping sleeve, and the valve cover is connected with the gland through a gland sealing ring. The arrangement of the opening clamping sleeve enables the sealing between the valve rod and the valve cover, and the arrangement of the gland sealing ring enables the sealing between the valve cover and the gland.

Preferably, a dustproof ring is connected to the press cover. The dust ring can be used for preventing dust from entering the sealing gate valve from the gland.

Compared with the prior art, the invention has the beneficial effects that:

(1) the valve clack and the elastic piece are arranged, so that the sealing gate valve can have the functions of preventing return and preventing water hammer.

(2) The setting of non return disk seat makes non return mechanism can form effectual soft seal.

(3) The sealing property of the sealing gate valve can be improved by arranging the sealing ring, the sealing sleeve, the valve rod sealing ring, the flange sealing ring, the edge cutting sleeve and the gland sealing ring.

Drawings

Fig. 1 is a first structural schematic view of a sealing gate valve with a non-return function according to the present invention.

Fig. 2 is a schematic structural view of a sealing gate valve with a non-return function according to the present invention.

Fig. 3 is a right side view of fig. 1.

The graphic symbols are illustrated as follows:

1-gate valve, 11-valve body, 111-inlet end, 112-outlet end, 113-valve body support, 12-gate plate, 121-groove, 13-valve cover, 14-gland, 15-dust ring, 16-valve stem, 17-valve stem nut, 18-hand wheel structure, 181-hand wheel, 182-flat washer, 183-cap nut, 2-check mechanism, 21-check valve seat, 22-valve flap, 23-elastic piece, 24-sleeve, 25-seal ring, 26-seal sleeve, 3-flange seal ring, 4-edge cutting sleeve, 5-gland seal ring, 6-valve stem seal ring, 7-inner hexagon cylinder head screw, 8-dust-proof rubber plug.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.