Valve element guide structure

Abstract

The utility model relates to the technical field of black water angle valves, and discloses a valve core guide structure which comprises a mounting seat, a valve body is fixedly mounted at the top of the mounting seat, a valve seat is mounted in the mounting seat, gaskets are fixedly mounted on the left side and the right side of the valve seat, and the valve seat is fixed by the valve body and the mounting seat. The guide cavity is integrally cast without a secondary connection structure, so that the valve is simple, economical and stable in structure and free of loosening possibility, and compared with a traditional guide structure, the position of the guide cavity is lower, the gravity center of the valve element is effectively lowered, inclination and shaking of the valve element under the action of high pressure difference are reduced, and the service life of the valve element is prolonged. According to the black water angle valve, the overall stability of the valve is improved, it can be ensured that when the black water angle valve bears the high pressure difference, the valve element keeps moving stably by strictly controlling the fit clearance between the valve element and the valve body, the leakage problem caused by the too large clearance is avoided, and the service life of the valve is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of black water angle valves, and more specifically, to a valve core guide structure. Background Art

[0002] Black water angle valve is a special type of valve, mainly used in coal chemical plants, especially in flash evaporation, washing and other processes, to adjust or control the pressure, liquid level and flow of black water or gray water.

[0003] Blackwater angle valves have been used for a long time in gas, liquid and solid three-phase flow media with large inlet and outlet pressure differences. Their main function is to control the flow of fluid and ensure the safe and stable operation of coal chemical equipment. However, when the fluid pressure fluctuates or vibrates, the valve core will deviate and shake, which will cause great damage to the service life of the valve. Therefore, a valve core guide structure is required to ensure the stable operation of the valve.

[0004] However, the current guide structure is usually installed externally, which will lead to a bloated valve structure, and the guide position is usually located at a higher position, which makes the center of gravity of the valve higher, unable to effectively avoid valve vibration, further reducing the stability of the valve core, and after long-term use, some fluid medium will remain inside the guide structure, causing wear and blockage. Similarly, the outer wall of the valve core will also adhere to some of the residual fluid medium, resulting in a deterioration of the sealing effect, so it needs to be improved and optimized. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a valve core guide structure, which has the advantages of stabilizing the valve core and reducing vibration.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a valve core guide structure, comprising a mounting seat, a valve body fixedly mounted on the top of the mounting seat, a valve seat mounted inside the mounting seat, gaskets fixedly mounted on both the left and right sides of the valve seat, and the valve body and the mounting seat fix the valve seat;

[0007] A guide cavity is defined within the valve body, a valve core is movably installed within the guide cavity, a valve stem is fixedly installed on the top of the valve core, the top of the valve stem extends to the top of the valve body, a stuffing box hole is defined within the valve body, the stuffing box hole is located above the guide cavity, packing is installed within the stuffing box hole, there are two groups of packings, and a spacer ring is provided between the two groups of packings, a packing gland is sleeved on the top of the stuffing box hole, a packing pressure plate is installed on the top of the packing gland, the packing pressure plate is fixedly connected to the top of the valve body by bolts, and the packing gland presses the packing;

[0008] A column is fixedly installed on the top of the valve body, an actuator is fixedly installed on the top of the column, an actuator piston rod is fixedly installed on the bottom of the actuator, the actuator piston rod is fixedly connected to a Haver connector, and the bottom of the Haver connector is fixedly connected to the valve stem.

[0009] As a preferred technical solution of the present invention, the inner wall of the guide cavity is sprayed with hard alloy, and the bottom of the guide cavity and the interface with the valve core are processed at a sharp angle to scrape off impurities.

[0010] As a preferred technical solution of the present invention, the top of the valve stem passes through the stuffing box hole, penetrates the stuffing sleeve and the stuffing plate, and the top of the valve stem is located above the valve body.

[0011] As a preferred technical solution of the present invention, the packing pressure plate and the valve body are fixedly connected by bolts, and the top of the packing pressure plate and the bolts are elastically connected by a disc spring.

[0012] As a preferred technical solution of the present invention, the valve body and the mounting seat are fixedly connected by bolts, and the valve seat is clamped and fixed between the valve body and the mounting seat, and the gasket is responsible for ensuring the sealing.

[0013] As a preferred technical solution of the present invention, an inclined guide groove is provided on the upper outer wall of the valve core, and a breathing port is formed between the guide groove and the guide cavity.

[0014] As an optimal technical solution of the present invention, the outer wall of the valve core is sprayed with hard alloy and then blackened, the end face of the valve core is processed into a bevel and bevel guide grooves are processed around the valve core.

[0015] As a preferred technical solution of the present invention, the valve stem and the valve core are connected by threads and locked with pins, and the interface is welded.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The utility model adopts the integrated casting of the guide cavity and has no secondary connection structure, so that the valve structure is simple, economical and stable without loosening. Compared with the traditional guide structure, the position of the guide cavity is lower, which effectively lowers the center of gravity of the valve core, reduces the tilt and shaking of the valve core under the action of high pressure difference, and improves the overall stability of the valve. By strictly controlling the matching clearance between the valve core and the valve body, it can ensure that the black water angle valve maintains stable movement when subjected to high pressure difference, avoids leakage problems caused by excessive clearance, and greatly improves the service life of the valve.

[0018] 2. The utility model uses a triple anti-loosening structure of threaded connection, pin locking and welding to ensure the stability between the valve core and the valve stem, thereby ensuring the stability of the valve during use. Compared with traditional devices, this device can not only ensure stable operation through the triple anti-loosening structure, but also avoid solid media from remaining in the valve core through the design of the inner wall of the guide cavity and the shape of the valve core, and effectively prevent the medium from accumulating in the cavity, and can connect the guide cavity with the flow channel, making the switch smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is an enlarged view of point A of the utility model;

[0021] Figure 3 This is a schematic diagram of the valve body structure of the utility model.

[0022] In the figure: 1. Valve body; 2. Gasket; 3. Valve seat; 4. Valve core; 5. Valve stem; 6. Packing; 7. Packing gland; 8. Packing plate; 9. Disc spring; 10. Column; 11. Spacer ring; 12. Haver connector; 13. Actuator piston rod; 14. Mounting seat; 15. Actuator; 16. Guide cavity; 17. Stuffing box hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figures 1 to 3 As shown, the utility model provides a valve core guide structure, including a mounting seat 14, a valve body 1 is fixedly mounted on the top of the mounting seat 14, a valve seat 3 is mounted inside the mounting seat 14, gaskets 2 are fixedly mounted on both the left and right sides of the valve seat 3, and the valve body 1 and the mounting seat 14 fix the valve seat 3;

[0025] A guide cavity 16 is provided inside the valve body 1. A valve core 4 is movably installed inside the guide cavity 16. A valve stem 5 is fixedly installed on the top of the valve core 4. The top of the valve stem 5 extends to the top of the valve body 1. A stuffing box hole 17 is provided inside the valve body 1. The stuffing box hole 17 is located above the guide cavity 16. Packing 6 is installed inside the stuffing box hole 17. There are two groups of packing 6, and a spacer ring 11 is provided between the two groups of packing 6. A packing gland 7 is sleeved on the top of the stuffing box hole 17. A packing pressure plate 8 is installed on the top of the packing gland 7. The packing pressure plate 8 is fixedly connected to the top of the valve body 1 by bolts. The packing gland 7 presses the packing 6 tightly.

[0026] A column 10 is fixedly installed on the top of the valve body 1, an actuator 15 is fixedly installed on the top of the column 10, an actuator piston rod 13 is fixedly installed on the bottom of the actuator 15, the actuator piston rod 13 is fixedly connected to the Haversian connector 12, and the bottom of the Haversian connector 12 is fixedly connected to the valve stem 5.

[0027] In the coal chemical industry, the ash content inside the conveying pipeline is high, the pressure drop is large, and the vibration is large. When the device is put into use, the staff can control the up and down displacement of the actuator piston rod 13 through the actuator 15. The actuator piston rod 13 and the valve stem 5 are connected by the Havers connector 12 to further control the displacement of the valve stem 5. When the valve stem 5 moves up and down, the bolts fix the packing pressure plate 8 and the valve body 1, so that the packing sleeve 7 always provides a downward squeezing force for the packing 6. At this time, when the valve stem 5 moves up and down, the sealing state inside the valve body 1 can be ensured by the setting of the packing 6, and the valve stem 5 will The valve core 4 is driven to move up and down. When the valve core 4 is lifted upward, the valve is opened, and when the valve core 4 is moved downward, the valve is closed. When the valve core 4 is in operation, the inclined surface setting of the end face of the valve core 4 and the inclined guide groove setting of the outer wall of the valve core 4 can effectively prevent the medium from accumulating in the cavity, and can connect the guide cavity 16 with the flow channel to make the switch smoother. At the same time, the interface between the guide cavity 16 and the valve core 4 adopts an acute angle design, which can effectively scrape off the residual solid medium on the outer wall of the valve core 4, ensure the service life of the valve core 4 in a working environment with a high ash content, and realize the control of the valve.

[0028] Through the integrated casting of the guide cavity 16 and the absence of a secondary connection structure, the valve structure is simple, economical and stable without the possibility of loosening. Compared with the traditional guide structure, the position of the guide cavity 16 is lower, which effectively lowers the center of gravity of the valve core, reduces the tilting and shaking of the valve core under the action of high pressure difference, and improves the overall stability of the valve. By strictly controlling the fitting clearance between the valve core 4 and the valve body 1, it can ensure that the black water angle valve maintains stable movement when subjected to high pressure difference, avoids leakage problems caused by excessive clearance, and greatly improves the service life of the valve.

[0029] The inner wall of the guide cavity 16 is sprayed with hard alloy, and the interface between the bottom of the guide cavity 16 and the valve core 4 is sharp-angled to scrape away impurities.

[0030] By spraying hard alloy, the wear resistance of the inner wall of the guide cavity 16 is increased, and the residual solid medium on the outer wall of the valve core 4 is scraped off by the sharp angle treatment at the bottom of the guide cavity 16.

[0031] The triple anti-loosening structure of threaded connection, pin locking and welding treatment ensures the stability between the valve core 4 and the valve stem 5, ensuring the stability of the valve during use. Compared with traditional devices, this device can not only ensure stable operation through the triple anti-loosening structure, but also avoid solid media from remaining in the valve core 4 through the design of the inner wall of the guide cavity 16 and the shape of the valve core 4, but also effectively prevent the medium from accumulating in the cavity, and can connect the guide cavity 16 with the flow channel, making the switch smoother.

[0032] The top of the valve stem 5 passes through the stuffing box hole 17 and penetrates the stuffing gland 7 and the stuffing plate 8 , and the top of the valve stem 5 is located above the valve body 1 .

[0033] The valve stem 5 passes through the stuffing box hole 17 to the top of the valve body 1 and then passes through the stuffing 6 to ensure the sealing of the valve stem 5 to prevent leakage.

[0034] The packing pressure plate 8 and the valve body 1 are fixedly connected by bolts, and the top of the packing pressure plate 8 and the bolts are elastically connected by a disc spring 9.

[0035] The packing pressing plate 8 is compressed by bolts, which further enables the packing pressing sleeve 7 to transmit thrust downward to compress the packing 6, thereby achieving the sealing of the valve stem 5. At the same time, the disc spring 9 realizes the dynamic load compression structure.

[0036] The valve body 1 and the mounting seat 14 are fixedly connected by bolts, and the valve seat 3 is clamped and fixed between the valve body 1 and the mounting seat 14, and the gasket 2 is responsible for ensuring the sealing.

[0037] The valve body 1 and the valve seat 3 are fixed to the mounting seat 14 by means of bolts, and the sealing performance of the valve body 1 is ensured by the provision of the gasket 2 .

[0038] Among them, an inclined guide groove is opened on the upper outer wall of the valve core 4, and a breathing port is formed between the guide groove and the guide cavity 16.

[0039] By setting the breathing port, the internal pressure of the valve body 1 is balanced, ensuring the normal operation of the valve core 4 and the safety performance of the valve.

[0040] The outer wall of the valve core 4 is sprayed with hard alloy and then blackened, the end face of the valve core 4 is processed into a bevel and bevel guide grooves are processed around the valve core 4.

[0041] By spraying hard alloy and blackening treatment, the wear resistance of the valve core 4 is increased and the friction coefficient is reduced. The shape design of the valve core 4 effectively prevents the medium from accumulating in the cavity, and enables the guide cavity 16 to be connected with the flow channel, making the switch smoother.

[0042] The valve stem 5 and the valve core 4 are connected by threads and locked by pins, and the interface is welded.

[0043] The working principle and use process of this utility model:

[0044] In the coal chemical industry, the ash content inside the conveying pipeline is high, the pressure drop is large, and the vibration is large. When the device is put into use, the staff can control the up and down displacement of the actuator piston rod 13 through the actuator 15. The actuator piston rod 13 and the valve stem 5 are connected by the Havers connector 12 to further control the displacement of the valve stem 5. When the valve stem 5 moves up and down, the bolts fix the packing pressure plate 8 and the valve body 1, so that the packing sleeve 7 always provides a downward squeezing force for the packing 6. At this time, when the valve stem 5 moves up and down, the sealing state inside the valve body 1 can be ensured by the setting of the packing 6, and the valve stem 5 will The valve core 4 is driven to move up and down. When the valve core 4 is lifted upward, the valve is opened, and when the valve core 4 is moved downward, the valve is closed. When the valve core 4 is in operation, the inclined surface setting of the end face of the valve core 4 and the inclined guide groove setting of the outer wall of the valve core 4 can effectively prevent the medium from accumulating in the cavity, and can connect the guide cavity 16 with the flow channel to make the switch smoother. At the same time, the interface between the guide cavity 16 and the valve core 4 adopts an acute angle design, which can effectively scrape off the residual solid medium on the outer wall of the valve core 4, ensure the service life of the valve core 4 in a working environment with a high ash content, and realize the control of the valve.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve core guide structure, comprising a mounting seat (14), characterized in that: A valve body (1) is fixedly mounted on the top of the mounting seat (14), a valve seat (3) is mounted inside the mounting seat (14), gaskets (2) are fixedly mounted on both the left and right sides of the valve seat (3), and the valve body (1) and the mounting seat (14) fix the valve seat (3); The valve body (1) is provided with a guide cavity (16) inside, a valve core (4) is movably installed inside the guide cavity (16), a valve stem (5) is fixedly installed on the top of the valve core (4), the top of the valve stem (5) passes through the top of the valve body (1), a stuffing box hole (17) is provided inside the valve body (1), the stuffing box hole (17) is located above the guide cavity (16), a stuffing (6) is installed inside the stuffing box hole (17), there are two groups of stuffing (6), and a spacer ring (11) is provided between the two groups of stuffing (6), a stuffing sleeve (7) is sleeved on the top of the stuffing box hole (17), a stuffing pressure plate (8) is installed on the top of the stuffing sleeve (7), the stuffing pressure plate (8) is fixedly connected to the top of the valve body (1) by bolts, and the stuffing sleeve (7) presses the stuffing (6); A column (10) is fixedly mounted on the top of the valve body (1), an actuator (15) is fixedly mounted on the top of the column (10), an actuator piston rod (13) is fixedly mounted on the bottom of the actuator (15), the actuator piston rod (13) is fixedly connected to a Haversian connector (12), and the bottom of the Haversian connector (12) is fixedly connected to the valve stem (5).

2. A valve core guide structure according to claim 1, characterized in that: The inner wall of the guide cavity (16) is sprayed with hard alloy, and the interface between the bottom of the guide cavity (16) and the valve core (4) is sharp-angled to scrape away impurities.

3. The valve core guide structure according to claim 1, characterized in that: The top of the valve stem (5) passes through the stuffing box hole (17) and the stuffing sleeve (7) and the stuffing plate (8), and the top of the valve stem (5) is located above the valve body (1).

4. The valve core guide structure according to claim 1, characterized in that: The packing pressure plate (8) and the valve body (1) are fixedly connected via bolts, and the top of the packing pressure plate (8) and the bolts are elastically connected via a disc spring (9).

5. The valve core guide structure according to claim 1, characterized in that: The valve body (1) and the mounting seat (14) are fixedly connected by bolts, and the valve seat (3) is clamped and fixed between the valve body (1) and the mounting seat (14), and the gasket (2) is responsible for ensuring sealing.

6. The valve core guide structure according to claim 1, characterized in that: An inclined guide groove is provided on the upper outer wall of the valve core (4), and a breathing port is formed between the guide groove and the guide cavity (16).

7. The valve core guide structure according to claim 1, characterized in that: The outer wall of the valve core (4) is sprayed with hard alloy and then blackened. The end face of the valve core (4) is machined into an inclined surface, and inclined guide grooves are machined around the valve core (4).

8. The valve core guide structure according to claim 1, characterized in that: The valve stem (5) and the valve core (4) are connected by threads and locked by pins, and the interfaces are welded.

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