Non-pylon check valve

Abstract

The utility model discloses a no hanger type check valve, including valve body, valve clapper, rocker, gasket, nut, half round head rivet, pin, cylinder pin and mounting plate, the valve body inside fixedly connected with valve seat, the valve seat right -end plug -in installation is below the rocker, and penetrates rocker, the valve seat is located the right side of rocker and is connected with nut through screw thread, gasket is installed between the nut and rocker, half round head rivet is installed on the nut and valve seat and penetrates, the upper end of rocker is fixedly installed on two mounting plates through pin, two mounting plates are fixedly connected on the inner wall of valve body respectively, the outside fixed connection of pin of mounting plate is located cylinder pin. The utility model installs and dismantles conveniently, and the use and maintenance cost are reduced to one hanger, and the most main is that check valve does not loosen rocker assembly in the frequent opening and closing impact in daily work, and the sealing is more reliable, the utility model simple structure, the production cost is low, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to check valves, specifically to a rackless check valve. Background Technology

[0002] As a unidirectional flow valve, the check valve has the advantages of automatically opening and closing the valve disc and preventing backflow of the medium, and is widely used in various fields. Conventional swing check valves are fixed by a rocker arm and a bracket. This structure requires high precision in the machining of the bracket. Furthermore, due to the frequent opening and closing of check valves in daily operation, the bracket is prone to loosening and displacement under long-term impact, which directly affects the position of the valve sealing surface and thus the seal. Therefore, we propose a bracketless check valve. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bracketless check valve. It solves the problem that the conventional swing check valve structure is fixed by a rocker arm and a bracket. This structure requires high precision in the machining of the bracket. In addition, the check valve is frequently opened and closed in daily operation. After long-term impact, the bracket is prone to loosening and displacement, which directly affects the position of the valve sealing surface and thus affects the seal.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a bracketless check valve, comprising a valve body, a valve disc, a rocker arm, a gasket, a nut, a semi-circular head rivet, a pin, a cylindrical pin, and a mounting plate. A valve seat is fixedly connected inside the valve body. A valve disc is located at the right end of the valve seat. The right end of the valve disc is inserted and installed below the rocker arm, penetrating the rocker arm. A nut is threadedly connected to the right side of the rocker arm. A gasket is installed between the nut and the rocker arm. A semi-circular head rivet is installed through the nut and the valve seat. The upper end of the rocker arm is fixedly mounted on two mounting plates via a pin. The two mounting plates are respectively fixedly connected to the inner wall of the valve body. A cylindrical pin is fixedly connected to the mounting plate outside the pin.

[0005] Based on the above scheme, the valve disc and the valve seat are respectively provided with a welded sealing surface.

[0006] Based on the above scheme, the two ends of the pin are spot welded to the mounting plate.

[0007] Based on the above scheme, the upper and lower ends of the cylindrical pin are spot welded to the mounting plate.

[0008] Compared with the prior art, the advantages of this utility model are: the rackless check valve has the following advantages: the structure is simple, easy to install and disassemble, and the absence of a rack reduces the cost of use and maintenance. Most importantly, the check valve will not loosen the rocker assembly during frequent opening and closing impacts in daily operation, and the sealing is more reliable. This utility model has a simple structure, low manufacturing cost, and strong practicality. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the rackless check valve of this utility model;

[0010] Figure 2 This is a partial top view of the rackless check valve of this utility model.

[0011] The numbers in the diagram are: 1-valve body, 101-valve seat, 2-valve disc, 3-rocker, 4-gasket, 5-nut, 6-half-round head rivet, 7-pin, 8-cylindrical pin, 9-mounting plate. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0013] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0014] Reference Figures 1 to 2 It can be seen that the bracketless check valve includes a valve body 1, a valve disc 2, a rocker arm 3, a gasket 4, a nut 5, a semi-circular head rivet 6, a pin 7, a cylindrical pin 8, and a mounting plate 9. A valve seat 101 is fixedly connected inside the valve body 1. The valve disc 2 is provided at the right end of the valve seat 101. The right end of the valve disc 2 is inserted and installed below the rocker arm 3 and passes through the rocker arm 3. The nut 5 is threadedly connected to the right side of the rocker arm 3. A gasket 4 is installed between the nut 5 and the rocker arm 3. A semi-circular head rivet 6 is installed through the nut 5 and the valve seat 101. The upper end of the rocker arm 3 is fixedly installed on two mounting plates 9 through the pin 7. The two mounting plates 9 are respectively fixedly connected to the inner wall of the valve body 1. A cylindrical pin 8 is fixedly connected to the mounting plate 9 on the outside of the pin 7.

[0015] The valve disc 2 and the valve seat 101 are respectively provided with welded sealing surfaces to ensure good sealing performance; the two ends of the pin 7 are respectively spot welded to the mounting plate 9, and the spot welding can fix the pin 7 firmly; the upper and lower ends of the cylindrical pin 8 are respectively spot welded to the mounting plate 9, and the spot welding can fix the cylindrical pin 8 firmly.

[0016] The principle and advantages of this utility model: For the rackless check valve, during installation, first, the rocker arm 3 is fitted onto the valve disc 2. Then, the gasket 4 and nut 5 are sequentially installed into the right end of the valve disc 2. Next, the semi-circular head rivet 6 is inserted and spot-welded securely. Then, the pin 7 is inserted into the pin hole at the upper end of the rocker arm 3, finally assembling the rocker arm assembly. Next, the rocker arm assembly is hung in the mounting plate 9 at the upper end of the valve body 1 (as shown in the diagram). After finding the optimal position where the sealing surfaces of the valve disc 2 and valve seat 1 are completely in contact, the position of the pin 7 is marked on the platform of the valve body 1. Based on the markings, two holes for cylindrical pins 8 are made on the upper part of the platform of the valve body 1. The cylindrical pins 8 are then inserted into the holes on the platform of the valve body 1, and the rocker arm assembly is rotated around the pin 7 several times until it rotates smoothly. Finally, the pin 7 and the cylindrical pins 8 are spot-welded securely. This utility model has a simple and reasonable structure, is easy to install, has low manufacturing cost, and is suitable for widespread use.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bracketless check valve, comprising a valve body (1), a valve disc (2), a rocker arm (3), a gasket (4), a nut (5), a semi-circular head rivet (6), a pin (7), a cylindrical pin (8), and a mounting plate (9), characterized in that: A valve seat (101) is fixedly connected inside the valve body (1). A valve disc (2) is provided at the right end of the valve seat (101). The right end of the valve disc (2) is inserted and installed below the rocker arm (3) and passes through the rocker arm (3). A nut (5) is threadedly connected to the right side of the rocker arm (3). A washer (4) is installed between the nut (5) and the rocker arm (3). A semi-circular head rivet (6) is installed through the nut (5) and the valve seat (101). The upper end of the rocker arm (3) is fixedly installed on two mounting plates (9) by a pin (7). The two mounting plates (9) are fixedly connected to the inner wall of the valve body (1). A cylindrical pin (8) is fixedly connected to the mounting plate (9) outside the pin (7).

2. The rackless check valve according to claim 1, characterized in that, The valve disc (2) and valve seat (101) are respectively provided with welded sealing surfaces at their joints.

3. The rackless check valve according to claim 1, characterized in that, The two ends of the pin (7) are spot welded to the mounting plate (9).

4. The rackless check valve according to claim 1, characterized in that, The upper and lower ends of the cylindrical pin (8) are spot welded to the mounting plate (9).

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