Automatic grease injection plug valve

Abstract

The utility model relates to the technical field of plug valves, in particular to an automatic grease injection plug valve which comprises a valve body, connecting pipes and a valve element, the connecting pipes are arranged on the two sides of the valve body, and the valve element extending to the outer side of the top end is arranged in the valve body; the sealing device has the beneficial effects that a grease injection machine injects sealing grease into the valve body through an injection pipe, the sealing grease flows at the top end of a valve element and flows on the inner wall of the valve body through a flow guide groove, a motor is started through a controller, and the output end of the motor drives a hexagonal block, a hexagonal groove and the valve element to rotate; the outer wall of the valve element is evenly coated with the sealing grease flowing on the inner side of the flow guide groove, the grease injection plug valve can conduct automatic grease injection, meanwhile, the sealing grease can be evenly coated, filling of tiny gaps in the sealing face of the grease injection plug valve is facilitated, the sealing performance of the grease injection plug valve is improved, medium leakage is prevented, and the service life of the grease injection plug valve is prolonged. And normal work of the grease injection plug valve is ensured.

Description

Technical Field

[0001] The utility model relates to the field of plug valves, in particular to an automatic grease injection plug valve. Background Art

[0002] Grease-injected plug valve is a special plug valve, which uses special grease to be injected from the top of the plug body between the valve body cone hole and the plug body to form an oil film to reduce the valve opening and closing torque, improve the sealing performance and service life. Grease-injected plug valve is usually used for sealing and lubrication of valves and pressure systems in high temperature and harsh environments. It can withstand a wide range of temperatures and high pressures, and can resist a variety of organic and inorganic chemicals.

[0003] When the existing grease injection plug valve is in use, the valve core is controlled by a motor to rotate, and the liquid in the pipeline connected to the grease injection plug valve is conducted and blocked through the valve groove inside the valve core. Since the gap between the valve core and the valve body is too narrow, it is difficult to evenly apply the sealing grease on the outer wall of the valve core, resulting in uneven distribution of the sealing grease on the outer wall of the valve core, which can easily cause inconvenience in the use of the grease injection plug valve. Utility Model Content

[0004] The utility model aims to provide an automatic grease injection plug valve to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic grease injection plug valve, which includes: a valve body, a connecting pipe and a valve core, connecting pipes are provided on both sides of the valve body, and a valve core extending to the outside of the top end is provided inside the valve body.

[0006] Preferably, three groups of grease injection grooves are opened at the front end of the valve body, a connecting frame is arranged inside the valve body, and two groups of first sealing plugs respectively extending to the inside of the two groups of grease injection grooves are welded to the front end of the connecting frame.

[0007] Preferably, the outer walls of the two groups of the first sealing plugs are sleeved with springs, the front end of the connecting frame is located between the two groups of the first sealing plugs and welded with a second sealing plug extending into the grease injection groove, and the inner wall of the valve body is provided with two groups of guide grooves.

[0008] Preferably, a valve groove is provided inside the valve core, a hexagonal groove is provided at the top of the valve core, and a motor is installed at the top of the valve body through bolts.

[0009] Preferably, a controller is mounted on the top of the motor via bolts, and a hexagonal block extending into the hexagonal slot is connected to the bottom of the motor via a coupling.

[0010] Preferably, the bottom end of the valve body is connected to a base via bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. When automatic grease injection is performed in the plug valve proposed by the utility model, the second sealing plug is pushed to move by the injection tube of the grease injection machine, so that the second sealing plug is separated from the grease injection groove, the second sealing plug moves to push the connecting frame and the first sealing plug to move, and the first sealing plug pushes the spring to perform compression deformation, and the injection tube of the grease injection machine is inserted into the interior of the valve body, and the injection mode of the grease injection machine is started. The grease injection machine injects sealing grease into the interior of the valve body through the injection tube, and the sealing grease flows at the top of the valve core, and the sealing grease flows on the inner wall of the valve body through the guide groove. The motor is started by the controller, and the output end of the motor drives the hexagonal block, the hexagonal groove and the valve core to rotate, so that the sealing grease flowing inside the guide groove is evenly coated on the outer wall of the valve core, so that the grease injection plug valve can be automatically greased, and the sealing grease can be evenly coated at the same time, which is helpful to fill the tiny gap on the sealing surface of the grease injection plug valve, improve the sealing performance of the grease injection plug valve, prevent medium leakage, and ensure the normal operation of the grease injection plug valve.

[0013] 2. When the grease injection plug valve proposed by the utility model needs to be assembled, the motor and the valve body are fixed by bolts, and the connecting frame, the first sealing plug, the spring and the second sealing plug are installed between the grease injection groove, the valve core is inserted into the interior of the valve body, the hexagonal groove and the hexagonal block are engaged and limited, and then the base is connected to the bottom end of the valve body with bolts. The grease injection plug valve is assembled. By setting the base, the grease injection plug valve is easy to assemble quickly, and the installation steps are simplified, thereby reducing the installation time and effectively improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a three-dimensional cutaway view of the utility model;

[0016] Figure 3 It is a three-dimensional exploded view of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the valve body of the utility model.

[0019] In the figure: 1, valve body; 101, base; 2, connecting pipe; 3, valve core; 301, valve slot; 302, hexagonal slot; 303, motor; 304, controller; 305, hexagonal block; 4, grease injection slot; 401, connecting frame;

[0020] 402, first sealing plug; 403, spring; 404, second sealing plug; 405, guide groove. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1-Figure 5 The utility model provides a technical solution: an automatic grease injection plug valve, the automatic grease injection plug valve comprises: a valve body 1, a connecting pipe 2 and a valve core 3, connecting pipes 2 are arranged on both sides of the valve body 1, and a valve core 3 extending to the outside of the top end is arranged inside the valve body 1.

[0024] Three groups of grease injection grooves 4 are opened at the front end of the valve body 1 , a connecting frame 401 is arranged inside the valve body 1 , and two groups of first sealing plugs 402 extending to the inside of the two groups of grease injection grooves 4 are welded to the front end of the connecting frame 401 .

[0025] The outer walls of the two groups of first sealing plugs 402 are both sleeved with springs 403, the front end of the connecting frame 401 is located between the two groups of first sealing plugs 402 and is welded with a second sealing plug 404 extending to the inside of the grease injection groove 4, the inner wall of the valve body 1 is provided with two groups of guide grooves 405, the outer wall of the second sealing plug 404 is slidably connected to the inner wall of the grease injection groove 4, the outer wall of the first sealing plug 402 is slidably connected to the inner wall of the grease injection groove 4, the outer wall of the second sealing plug 404 is in contact with the outer wall of the first sealing plug 402 and the inner wall of the grease injection groove 4 to form a sealed state.

[0026] When it is necessary to automatically inject grease into the stopcock, the operator inserts the injection tube of the grease injection machine into a group of grease injection grooves 4, the injection tube pushes the second sealing plug 404 to move, the second sealing plug 404 slides on the inner wall of the grease injection groove 4, the injection tube continues to push the second sealing plug 404 to move, so that the second sealing plug 404 is separated from the grease injection groove 4, the second sealing plug 404 moves and pushes the connecting frame 401 to move, the connection frame 401 moves and drives the first sealing plug 402 to move, the first sealing plug 402 slides on the inner wall of the grease injection groove 4, and the first sealing plug 402 pushes the spring 403 to compress and deform, after the injection tube of the grease injection machine is inserted into the interior of the valve body 1, the injection mode of the grease injection machine is started, and the grease injection machine injects sealing grease into the interior of the valve body 1 through the injection tube, the sealing grease flows at the top of the valve core 3, and the sealing grease passes through the guide groove 405 in the valve body. 1 flows along the inner wall of the grease injection groove 4, and the motor 303 is started through the controller 304. The output end of the motor 303 drives the hexagonal block 305 and the hexagonal groove 302 to rotate through the coupling. The rotation of the hexagonal groove 302 drives the valve core 3 to rotate, so that the sealing grease flowing inside the guide groove 405 evenly coats the outer wall of the valve core 3. After the grease injection is completed, the injection tube of the grease injection machine is withdrawn from the inside of the grease injection groove 4, and the spring 403 loses the limit and resets. The spring 403 pushes the first sealing plug 402, the connecting frame 401 and the second sealing plug 404 to move. The first sealing plug 402 and the second sealing plug 404 seal the grease injection groove 4, so that the grease injection plug valve can be automatically greased. At the same time, the sealing grease can be evenly coated, which is helpful to fill the tiny gap on the sealing surface of the grease injection plug valve, improve the sealing performance of the grease injection plug valve, prevent medium leakage, and ensure the normal operation of the grease injection plug valve.

[0027] Embodiment 2

[0028] On the basis of the first embodiment, a valve groove 301 is formed inside the valve core 3 , a hexagonal groove 302 is formed at the top of the valve core 3 , and a motor 303 is mounted on the top of the valve body 1 through bolts.

[0029] The top of the motor 303 is installed with a controller 304 by bolts, and the bottom of the motor 303 is connected to a hexagonal block 305 extending into the hexagonal slot 302 through a coupling. One end of the hexagonal block 305 is snap-connected to the inside of the hexagonal slot 302, and the controller 304 and the motor 303 are connected by a power cord.

[0030] When it is necessary to use the grease injection plug valve, the two groups of connecting pipes 2 are connected to the two groups of external pipes, the liquid is transported through the external pipes, and the start and stop of the motor 303 are controlled by the controller 304. The output end of the motor 303 drives the hexagonal block 305 to rotate through the coupling. The rotation of the hexagonal block 305 drives the hexagonal groove 302 to rotate. The rotation of the hexagonal groove 302 drives the valve core 3 and the valve groove 301 to rotate, so that the valve groove 301 conducts and blocks the liquid in the pipeline.

[0031] Embodiment 3

[0032] On the basis of the second embodiment, the bottom end of the valve body 1 is connected to the base 101 by bolts.

[0033] When it is necessary to assemble the grease injection plug valve, the operator uses bolts to fix the motor 303 and the valve body 1, and installs the connecting frame 401, the first sealing plug 402, the spring 403 and the second sealing plug 404 with the grease injection groove 4, inserts the valve core 3 into the interior of the valve body 1, engages the hexagonal groove 302 and the hexagonal block 305 to limit the position, and then uses bolts to connect the base 101 to the bottom end of the valve body 1. The grease injection plug valve is assembled. By setting the base 101, the grease injection plug valve is easy to assemble quickly, and the installation steps are simplified, thereby reducing the installation time and effectively improving work efficiency.

[0034] In actual use, the start and stop of the motor 303 is controlled by the controller 304, and the output end of the motor 303 drives the hexagonal block 305 and the hexagonal slot 302 to rotate. The rotation of the hexagonal slot 302 drives the valve core 3 and the valve slot 301 to rotate, so that the valve slot 301 conducts and blocks the liquid in the pipeline.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic grease injection plug valve, characterized in that: The automatic grease injection plug valve comprises: a valve body (1), a connecting pipe (2) and a valve core (3), wherein connecting pipes (2) are arranged on both sides of the valve body (1), a valve core (3) extending to the outside of the top end is arranged inside the valve body (1), three groups of grease injection grooves (4) are opened at the front end of the valve body (1), a connecting frame (401) is arranged inside the valve body (1), two groups of first sealing plugs (402) respectively extending to the inside of the two groups of grease injection grooves (4) are welded to the front end of the connecting frame (401), and the outer walls of the two groups of first sealing plugs (402) are sleeved with springs (403), and a second sealing plug (404) extending to the inside of the grease injection groove (4) is welded to the front end of the connecting frame (401) between the two groups of first sealing plugs (402), and the inner wall of the valve body (1) is provided with two groups of guide grooves (405).

2. The automatic grease injection plug valve according to claim 1, characterized in that: The valve core (3) has a valve groove (301) formed inside, the top of the valve core (3) has a hexagonal groove (302), and the top of the valve body (1) has a motor (303) mounted thereon via bolts.

3. The automatic grease injection plug valve according to claim 2, characterized in that: A controller (304) is installed on the top of the motor (303) via bolts, and a hexagonal block (305) extending into the inside of the hexagonal slot (302) is connected to the bottom of the motor (303) via a coupling.

4. The automatic grease injection plug valve according to claim 1, characterized in that: The bottom end of the valve body (1) is connected to a base (101) via bolts.

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