Vacuum valve group for direct combustion engine

Abstract

The utility model provides a vacuum valve group for direct combustion machine belongs to valve body technical field, including vacuum valve subassembly and installation subassembly, vacuum valve subassembly includes valve body, the top of valve body is installed with the cylinder, the inside piston of cylinder is installed with transmission rod, the utility model, the top of valve body is installed with the cylinder, the transmission rod of cylinder inside piston connection is inserted in the inside of valve body, one end of transmission rod is installed with the valve core, the valve core is pasted with the valve seat inside valve body, when the cylinder stretches, pushes the valve core and the valve seat close pasting through transmission rod, the valve core surface sets up the annular groove, the sealing ring is embedded in the annular groove inside, when the valve core and the valve seat pasting, the sealing ring forms the sealing structure at the pasting, plays the sealing effect, when the cylinder contracts, transmission rod drives the valve core and the valve seat to separate, the valve body is in the open state at this moment, controls the valve body to open and shut through the cylinder control valve core lift and thus, replaces manual control vacuum valve mode, alleviates personnel burden.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, specifically a vacuum valve assembly for a direct-fired engine. Background Technology

[0002] A vacuum valve is a component in a vacuum system used to change the direction of airflow, regulate the flow rate, and cut off or connect pipelines. Vacuum valves are sealed with rubber or metal sealing rings. A direct-fired gas engine is a machine that uses the direct combustion of combustible gas to provide cooling, heating, and domestic hot water. Direct-fired engines use fuels such as natural gas and diesel as fuel. Most widely used direct-fired engines use natural gas as fuel. During the transportation of gaseous fuel, vacuum valves are used to control the cutting off or connecting of the airflow path. However, existing vacuum valves are not convenient for automatic control of cutting off and connecting, requiring manual operation of the vacuum valves during the operation of the direct-fired engine, thus increasing the workload for personnel. Utility Model Content

[0003] The purpose of this invention is to provide a vacuum valve assembly for a direct-fired engine, in order to solve the problem mentioned in the background art that existing vacuum valves are not convenient for automatic control of shut-off and shut-off, and that manual operation of the vacuum valve is required during the operation of the direct-fired engine, thereby increasing the workload of personnel.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vacuum valve assembly for a direct-fired engine, comprising a vacuum valve assembly and an installation assembly; Wherein: the vacuum valve assembly includes a valve body, a cylinder is installed on the top of the valve body, a transmission rod is installed on the piston inside the cylinder, the telescopic end of the transmission rod is inserted inside the valve body, a valve core is installed at one end of the transmission rod inside the valve body, a valve seat is provided inside the valve body, the valve core fits against the valve seat, an annular groove is opened on the surface of the valve core, and a sealing ring is embedded inside the annular groove; The mounting assembly includes a mounting sleeve that is fixedly mounted on top of the valve body. A ball bearing is fixedly mounted inside the mounting sleeve, and a sealing sleeve is mounted inside the mounting sleeve on top of the ball bearing. The valve body is mounted on top of the mounting sleeve.

[0005] As a preferred embodiment of this utility model: air ports are provided at the top and bottom of the cylinder, and air pipes are installed on the surface of the two air ports. One end of the two air pipes is connected to an external electromagnetic control valve.

[0006] As a preferred embodiment of this utility model: a spring is sleeved on the surface of the transmission rod, and the top end of the spring is in contact with the inner wall of the top end of the valve body.

[0007] As a preferred embodiment of this utility model: a mounting ring is fixedly connected to the bottom of one end of the transmission rod, and a plurality of mounting holes are correspondingly opened on the surfaces of the valve core and the mounting ring, and a fixing bolt is threaded into the mounting hole.

[0008] As a preferred embodiment of this utility model, a connecting flange is installed at both ends of the valve body.

[0009] As a preferred embodiment of this utility model, the valve body surface is provided with a hot-dip galvanized layer.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) A cylinder is installed on the top of the valve body. The transmission rod connected to the piston inside the cylinder is inserted inside the valve body. A valve core is installed at one end of the transmission rod. The valve core fits against the valve seat inside the valve body. When the cylinder extends, the transmission rod pushes the valve core to fit tightly against the valve seat. An annular groove is opened on the surface of the valve core. A sealing ring is embedded in the annular groove. When the valve core fits against the valve seat, the sealing ring forms a sealing structure at the fit point, which plays a sealing role. When the cylinder retracts, the transmission rod drives the valve core to separate from the valve seat. At this time, the valve body is in the open state. The valve body is opened and closed by controlling the valve core to rise and fall through the cylinder, which replaces the manual control of the vacuum valve and reduces the burden on personnel. (2) An installation sleeve is installed on the top of the valve body. A ball bearing is fixedly installed inside the installation sleeve. Two sealing sleeves are also installed inside the installation sleeve at the top of the ball bearing. The transmission rod passes through the ball bearing and the sealing sleeve and enters the valve body, so that the transmission rod moves up and down stably inside the installation sleeve. At the same time, the sealing sleeve plays a sealing role to prevent leakage at the installation sleeve. After the installation holes on the surface of the valve core and the installation ring are aligned, they are fixedly installed by fixing bolts, so that the transmission rod and the valve core can be disassembled, which is convenient for valve core replacement and maintenance and ensures sealing. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the vacuum valve assembly structure of this utility model; Figure 3 This is a schematic diagram of the installation component structure of this utility model; Figure 4 This is a schematic diagram of the mounting ring installation structure of this utility model.

[0012] In the diagram: 3. Vacuum valve assembly; 31. Valve body; 32. Cylinder; 33. Drive rod; 34. Valve core; 35. Valve seat; 36. Annular groove; 37. Sealing ring; 4. Mounting components; 41. Mounting sleeve; 42. Ball bearing; 43. Sealing sleeve; 5. Air inlet; 6. Trachea; 7. Spring; 8. Install the ring; 9. Mounting holes; 10. Fixing bolts; 11. Connecting flange. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figure 1 - Figure 4 A vacuum valve assembly for a direct-fired engine includes: a vacuum valve assembly 3 and a mounting assembly 4; Please see Figure 1 , Figure 2 The vacuum valve assembly 3 includes a valve body 31, a cylinder 32 is mounted on the top of the valve body 31, a transmission rod 33 is mounted on the piston inside the cylinder 32, the telescopic end of the transmission rod 33 is inserted inside the valve body 31, a valve core 34 is mounted on one end of the transmission rod 33 inside the valve body 31, a valve seat 35 is provided inside the valve body 31, the valve core 34 fits against the valve seat 35, an annular groove 36 is opened on the surface of the valve core 34, and a sealing ring 37 is embedded inside the annular groove 36.

[0015] In practical use: A cylinder 32 is installed on the top of the valve body 31. The transmission rod 33 connected to the piston inside the cylinder 32 passes through the inside of the valve body 31. A valve core 34 is installed at one end of the transmission rod 33. The valve core 34 fits against the valve seat 35 inside the valve body 31. When the cylinder 32 extends, it pushes the valve core 34 to fit tightly against the valve seat 35 through the transmission rod 33. An annular groove 36 is opened on the surface of the valve core 34, and a sealing ring 37 is embedded in the annular groove 36. When the valve core 34 fits against the valve seat 35, the sealing ring 37 forms a sealing structure at the fitting point, which plays a sealing role. When the cylinder 32 retracts, the transmission rod 33 drives the valve core 34 to disengage from the valve seat 35. At this time, the valve body 31 is in the open state. The opening and closing of the valve body 31 is controlled by the cylinder 32 to control the raising and lowering of the valve core 34, which replaces the manual control of the vacuum valve and reduces the burden on personnel.

[0016] Please see Figure 1 , Figure 3The mounting assembly 4 includes a mounting sleeve 41 fixedly mounted on the top of the valve body 31. A ball bearing 42 is fixedly mounted inside the mounting sleeve 41. A sealing sleeve 43 is mounted inside the mounting sleeve 41 on top of the ball bearing 42. The valve body 31 is mounted on the top of the mounting sleeve 41.

[0017] In practical use: A mounting sleeve 41 is installed on the top of the valve body 31. A ball bearing 42 is fixedly installed inside the mounting sleeve 41. Two sealing sleeves 43 are also installed inside the mounting sleeve 41 on top of the ball bearing 42. The transmission rod 33 passes through the ball bearing 42 and the sealing sleeves 43 and enters the valve body 31, so that the transmission rod 33 moves up and down stably inside the mounting sleeve 41. At the same time, the sealing sleeves 43 play a sealing role to prevent leakage at the mounting sleeve 41.

[0018] Please see Figure 3 The cylinder 32 has air ports 5 at the top and bottom, and air pipes 6 are installed on the surface of the two air ports 5. One end of the two air pipes 6 is connected to an external electromagnetic control valve.

[0019] In practical use: air ports 5 are provided at the top and bottom of the cylinder 32. Air pipes 6 are installed on the surface of the air ports 5. One end of the air pipes 6 is connected to an external electromagnetic control valve, so that the external air source can control the air inlet and outlet of the two air pipes 6 through the electromagnetic control valve, thereby realizing the extension and retraction control of the transmission rod 33 inside the cylinder 32.

[0020] Please see Figure 2 A spring 7 is fitted on the surface of the transmission rod 33, and the top end of the spring 7 is in contact with the inner wall of the top end of the valve body 31.

[0021] In practical use: A spring 7 is sleeved on the surface of the transmission rod 33. The top end of the spring 7 contacts the inner wall of the top of the valve body 31. When the transmission rod 33 extends, it drives the spring 7 to extend and retract. The elasticity of the spring 7 further pushes the valve core 34 to fit tightly with the valve seat 35, ensuring the closing effect of the valve core 34.

[0022] Please see Figure 4 A mounting ring 8 is fixedly connected to one end of the transmission rod 33. Several mounting holes 9 are opened on the surfaces of the valve core 34 and the mounting ring 8 respectively. Fixing bolts 10 are threaded inside the mounting holes 9.

[0023] In practical use: A mounting ring 8 is installed at the bottom of one end of the transmission rod 33. Several mounting holes 9 are opened on the surface of the valve core 34 and the mounting ring 8. The internal threads of the mounting holes 9 are connected to fixing bolts 10. After the mounting holes 9 on the surface of the valve core 34 and the mounting ring 8 are aligned, they are fixedly installed by fixing bolts 10, so that the transmission rod 33 and the valve core 34 can be disassembled, which facilitates the replacement and maintenance of the valve core 34 and ensures the sealing performance.

[0024] Please see Figure 3A connecting flange 11 is installed at both ends of the valve body 31.

[0025] In practical use: the valve body 31 is fixedly connected to the direct-fired engine delivery pipeline through the connecting flanges 11 at both ends.

[0026] Please see Figure 1 The valve body 31 has a hot-dip galvanized layer on its surface.

[0027] In practical use: The valve body 31 has a hot-dip galvanized layer on its surface, which improves corrosion resistance and extends service life.

[0028] A cylinder 32 is installed on the top of the valve body 31. A transmission rod 33 connected to the piston inside the cylinder 32 passes through the interior of the valve body 31. A valve core 34 is installed at one end of the transmission rod 33. The valve core 34 fits against the valve seat 35 inside the valve body 31. When the cylinder 32 extends, it pushes the valve core 34 to fit tightly against the valve seat 35 through the transmission rod 33. An annular groove 36 is formed on the surface of the valve core 34, and a sealing ring 37 is embedded in the annular groove 36. When the valve core 34 fits against the valve seat 35, the sealing ring 37 forms a seal at the fitting point. The structure serves a sealing function. When the cylinder 32 retracts, the transmission rod 33 drives the valve core 34 to disengage from the valve seat 35. At this time, the valve body 31 is in the open state. The cylinder 32 controls the raising and lowering of the valve core 34, thereby controlling the opening and closing of the valve body 31. This replaces the manual control of the vacuum valve, reducing the burden on personnel. After the valve core 34 and the mounting hole 9 on the surface of the mounting ring 8 are aligned, they are fixedly installed by fixing bolts 10, so that the transmission rod 33 and the valve core 34 can be disassembled, which facilitates the replacement and maintenance of the valve core 34 and ensures the sealing performance.

[0029] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vacuum valve assembly for a direct-fired engine, characterized in that, include: Vacuum valve assembly (3), the vacuum valve assembly (3) includes a valve body (31), a cylinder (32) is installed on the top of the valve body (31), a transmission rod (33) is installed on the piston inside the cylinder (32), the telescopic end of the transmission rod (33) is inserted inside the valve body (31), a valve core (34) is installed at one end of the transmission rod (33) inside the valve body (31), a valve seat (35) is provided inside the valve body (31), the valve core (34) fits against the valve seat (35), an annular groove (36) is opened on the surface of the valve core (34), and a sealing ring (37) is embedded inside the annular groove (36). The mounting assembly (4) includes a mounting sleeve (41) fixedly mounted on the top of the valve body (31), a ball bearing (42) fixedly mounted inside the mounting sleeve (41), a sealing sleeve (43) mounted inside the mounting sleeve (41) on top of the ball bearing (42), and the valve body (31) mounted on the top of the mounting sleeve (41).

2. The vacuum valve assembly for a direct-fired engine according to claim 1, characterized in that: The cylinder (32) has air ports (5) at its top and bottom. Air pipes (6) are installed on the surfaces of the two air ports (5). One end of the two air pipes (6) is connected to an external electromagnetic control valve.

3. A vacuum valve assembly for a direct-fired engine according to claim 2, characterized in that: A spring (7) is fitted on the surface of the transmission rod (33), and the top end of the spring (7) is in contact with the inner wall of the top end of the valve body (31).

4. A vacuum valve assembly for a direct-fired engine according to claim 1, characterized in that: A mounting ring (8) is fixedly connected to the bottom of one end of the transmission rod (33). Several mounting holes (9) are opened on the surfaces of the valve core (34) and the mounting ring (8). A fixing bolt (10) is threaded inside the mounting hole (9).

5. A vacuum valve assembly for a direct-fired engine according to claim 1, characterized in that: A connecting flange (11) is installed at both ends of the valve body (31).

6. A vacuum valve assembly for a direct-fired engine according to claim 1, characterized in that: The valve body (31) has a hot-dip galvanized layer on its surface.

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