Industrial valve for high pressure fluids

Abstract

The application discloses an industrial valve for high-pressure fluid and relates to the technical field of industrial valves, which is improved for the valve applied in a high-pressure fluid environment. Different from a conventional valve core structure, the valve is based on a front cone cap and first limits the structural characteristics, so that the valve is completely matched with the inner wall of a flow channel cavity to achieve the purpose of blocking the flow channel cavity. The opening degree is changed by using a gear driving mode. Compared with the conventional valve core structure, fluid flows along the outer curved surface of the front cone cap, and inverse pressure is formed in cooperation with the slope of the front cone cap in the process of high-pressure flow. The key lies in the instantaneous impact force of the fluid cooperating with the rear cone cap. The rear cone cap does not have the action ability, but the fluid cooperating with the instantaneous impact force is filled into the rear cone cap, and the rubber skin sleeve is instantaneously expanded. The purpose is to reduce the working burden of the instantaneous impact force on the structural member by using the pressure of the fluid itself, and the pressure bearing is not dependent on the buffering capacity of the elastic member. In addition, the liquid level balance principle is used to "share and balance" the instantaneous impact force.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of industrial valves, in particular to an industrial valve for high-pressure fluid. BACKGROUND

[0002] Valves are mainly used for regulating fluid flow. Taking butterfly valves and ball valves as examples, the essence is to change the opening degree of fluid in the valve. The valve has corresponding prominent effects according to the characteristics of fluid. For a valve body applied in a high-pressure fluid environment, the key is to have the characteristic of bearing high pressure (instantaneous impact) without considering the material.

[0003] Referring to the technical content in the related documents with publication numbers CN119244761A and CN117450289A, the essence is to use the buffering capacity of an elastic member to "shift" the working burden of high pressure on a working member. However, the elastic member mainly has two processes of energy storage and energy release. Without considering energy loss, the kinetic energy stored by instantaneous impact is still "completely" released, so the problem of increasing the working burden of the working member still exists. Especially for a high-pressure valve body applied in the industrial field, the instantaneous switching of the flow of high-pressure fluid increases the working burden of the elastic member and reduces its service life. To this end, the application provides a solution. SUMMARY

[0004] The application aims to provide an industrial valve for high-pressure fluid. The valve body applied in high-pressure fluid is described. In order to improve the high-pressure bearing capacity, the buffering capacity of the elastic member is mainly used to "shift" the working burden of the high-pressure environment on the working member. However, due to the two processes of kinetic energy storage and release, the kinetic energy after release will increase the working burden of the elastic member and reduce its working burden, and the problem of affecting the working member still exists.

[0005] The application can be achieved by the following technical scheme: an industrial valve for high-pressure fluid, comprising a valve body, wherein the valve body is internally provided with a front cone cap and a rear cone cap in sequence along the flow direction of fluid, and a flow channel cavity corresponding to the front cone cap and the rear cone cap is formed in the valve body.

[0006] The cross section of the front cone cap and the rear cone cap is in a transverse conical shape. The diameter of the front cone cap increases along the flow direction of fluid. The diameter of the rear cone cap decreases along the flow direction of fluid. The maximum diameter of the rear cone cap is smaller than that of the front cone cap. The outer wall of the front cone cap is matched with the inner wall of the flow channel cavity. The outer wall of the front cone cap is in an inwardly curved arc shape along the direction close to the center point of the flow channel cavity. The outer wall of the rear cone cap is in an outwardly curved arc shape along the direction close to the inner wall of the flow channel cavity.

[0007] The valve body is provided with a loop pipe group composed of a front water jacket, a middle water jacket, a water collecting jacket and a rear water jacket, the front water jacket, the middle water jacket and the water collecting jacket are installed on the upper side of the outer wall of the valve body, and the front water jacket and the middle water jacket are in communication with the inside of the flow channel cavity, and the inside of the water collecting jacket is not in communication with the flow channel cavity.

[0008] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0009] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0010] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0011] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0012] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0013] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0014] Further, the valve body is provided with a water injection port and a water outlet at the positions corresponding to the two ends of the front cone cap and the rear cone cap, respectively, and the water outlet is arranged at the lower side of the outer wall of the valve body.

[0015] The present application has the following advantages:

[0016] 1. The industrial valve applied in high pressure environment is improved, and the obvious difference from the conventional valve core structure is that the front cone cap replaces the conventional valve core structure. The front cone cap is an integrated structure, and the structure is very simple. The structure characteristics are improved, and the specific performance is that the outer wall position is set as an inner curved arc shape. The opening switching function is realized by the directional and quantitative movement of the front cone cap in the horizontal direction. The key is the reverse pressure process of the high pressure fluid on the outer curved surface of the front cone cap. The specific performance is that the cross-sectional area of the fluid on the outer curved surface of the front cone cap gradually increases, and the flow rate is significantly improved but the static pressure is reduced. Therefore, it can be directly understood that the front cone cap itself has the function of fluid pressure reduction;

[0017] 2. The key is the rear cone cap matched with the front cone cap. The rear cone cap is a fixed structure relative to the valve body structure, and the front cone cap is mainly driven by the gear valve rod assembly. Therefore, the front cone cap has the horizontal sliding capability in the valve body, and is mainly used for adjusting the opening of the front cone cap. The overall structure does not need to add elastic members, so that the buffer capability of the elastic members is not used as the direct condition for bearing high pressure. Specifically, the fluid is filled into the rear cone cap instantaneously, and is pumped into the rear cone cap through the water seepage port, so that the rubber sleeve expands rapidly to generate pressure on the front cone cap. It can be understood that on the one hand, the water blocking fan group is used to reduce the fluid pressure, and the key is to ensure that the fluid pumped instantaneously can enter the inside of the rear cone cap, so as to reduce the influence of the instantaneous impact force by using the fluid itself hydraulic pressure;

[0018] 3. Based on the above content, the front water jacket, the middle water jacket and the rear water jacket are added to the opening adjusting position, the inner water pipe and the valve body water outlet position. The essence is to balance the liquid pressure in the valve body water outlet position by using the liquid level balance principle. However, the position of the front water jacket is close to the opening adjusting position, so the pressure fluctuation degree is obviously higher than that of the rear water jacket and the middle water jacket. Therefore, the fluid in the front water jacket enters the water collecting sleeve first, and changes the liquid level height of the water collecting sleeve through the piston block. The purpose is to balance the instantaneous impact force by changing the liquid level height and combining the liquid level balance principle. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work.

[0020] Figure 1 A structure diagram of the industrial valve for high pressure fluid is provided.

[0021] Figure 2For the present invention Figure 1 A cross-section of Zhongfengtai;

[0022] Figure 3 For the present invention Figure 1 sectional view of

[0023] Figure 4 Schematic diagram of the structure of the front cone cap and the rear cone cap in the present invention;

[0024] Figure 5 Schematic diagram of the structure of the loop pipe group in the present invention;

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the structure of part A.

[0026] In the figure: 1. Valve body; 2. Mounting sleeve; 3. Front water jacket; 4. Middle water jacket; 5. Water collecting jacket; 6. Push rod assembly; 7. Liquid level sensor; 8. Rear water jacket; 9. Gear valve stem assembly; 10. Water blocking fan assembly; 11. Rear cone cap; 12. Front cone cap; 13. Piston block; 14. Water seepage port; 15. Rubber sleeve. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0028] Example 1: This article describes a valve body used in high-pressure fluids. To improve its high-pressure bearing capacity, the buffering capacity of the elastic member is mainly used to "transfer" the workload of the high-pressure environment on the working member. However, due to the two processes of kinetic energy storage and release, the released kinetic energy will increase the workload of the elastic member, reducing its workload, while still affecting the working member. In this regard, the following technical solution is proposed:

[0029] Reference Figures 1 to 6 In this embodiment, an industrial valve for high-pressure fluid includes a valve body 1. A front cone cap 12 and a rear cone cap 11 are sequentially arranged inside the valve body 1 along the fluid flow direction, and a flow channel cavity corresponding to the front cone cap 12 and the rear cone cap 11 is opened inside the valve body 1.

[0030] The cross section of the front cone cap 12 and the rear cone cap 11 is in a transverse conical shape, the diameter of the front cone cap 12 increases along the fluid flow direction, the diameter of the rear cone cap 11 decreases along the fluid flow direction, the maximum diameter of the rear cone cap 11 is smaller than that of the front cone cap 12, the outer wall of the front cone cap 12 is matched with the inner wall of the flow passage cavity, and the outer wall of the front cone cap 12 is in an inwardly curved arc shape along the direction close to the center point of the flow passage cavity, and the outer wall of the rear cone cap 11 is in an outwardly curved arc shape along the direction close to the inner wall of the flow passage cavity;

[0031] The valve body 1 is provided with a loop pipe group composed of a front water jacket 3, a middle water jacket 4, a water collecting jacket 5 and a rear water jacket 8, the front water jacket 3, the middle water jacket 4 and the water collecting jacket 5 are installed on the outer wall of the valve body 1 at the upper side position, and the front water jacket 3 and the middle water jacket 4 are in communication with the inside of the flow passage cavity, and the inside of the water collecting jacket 5 is not in communication with the flow passage cavity.

[0032] Basic principle: the basic principle of the valve structure proposed in the application is basically consistent with the conventional valve principle, and the essence is to change the opening degree in the flow passage cavity, but there is a difference in the characteristic of bearing high pressure: in the application, the front cone cap 12 and the rear cone cap 11 are mainly used, and the overall structure does not have obvious elastic members, and the only elastic member is the rubber skin sleeve 15, but the application does not use the buffering capacity of the rubber skin sleeve 15, and the front cone cap 12 is described as follows:

[0033] S1: first, the setting direction and the setting position of the front cone cap 12 and the rear cone cap 11 need to be set according to the fluid flow direction, so that Figure 3 for example, the fluid flows in the direction from left to right, then the front cone cap 12 and the rear cone cap 11 can only move in the direction from left to right, and the diameter of the front cone cap 12 increases in the direction from left to right, and the diameter of the rear cone cap 11 increases in the direction from right to left, and the maximum diameter of the front cone cap 12 is greater than that of the rear cone cap 11, and a gap is always provided between the two;

[0034] S2: a rubber sealing member can be added to the outer curved surface of the front cone cap 12, when the outer wall of the front cone cap 12 is completely matched with the inner wall of the flow passage cavity, the sealing effect can be achieved, otherwise when the front cone cap 12 moves to the right, the flow passage cavity has space to ensure the flow of the fluid, and when the fluid flows on the outer curved surface of the front cone cap 12, the characteristic that the channel cross-sectional area gradually increases is mainly shown, then in this process, the local channel cross-sectional area increases due to the bending of the flow line, which causes the phenomenon of reverse pressure that the fluid flow rate decreases and the fluid pressure decreases, so it can be directly understood that: the front cone cap 12 itself has the function of reducing pressure and bearing high pressure;

[0035] S3: the movement process of the front cone cap 12 is described: its essence is that the front cone cap 12 is installed at one end of the valve rod, and the valve rod has a small distance sliding ability with the valve body 1, and the essence of the gear valve rod assembly 2 is that the driving gear and the gear groove on the valve rod are vertically arranged between the driving gear and the valve rod, so as to drive the front cone cap 12 to move horizontally along the horizontal direction under the meshing action of the driving gear and the gear groove.

[0036] Example two: for the process of adjusting the opening degree of the front cone cap, the rear cone cap is supplemented as follows:

[0037] The valve body 1 is provided with a water inlet and a water outlet corresponding to the positions of the two ends of the front cone cap 12 and the rear cone cap 11, and the water outlet is arranged at the lower side of the outer wall of the valve body 1. The valve body 1 is provided with a mounting sleeve 2 on the outer wall of one side corresponding to the water inlet, and the mounting sleeve 2 is provided with a gear valve rod assembly 9. The valve rod is installed at one end of the front cone cap 12, and the valve rod is in sliding connection with the valve body 1. The gear valve rod assembly 9 comprises a driving gear and a gear groove ring arranged on the valve rod. The rear cone cap 11 is provided with a gap between one end position and the front cone cap 12. The rear cone cap 11 is provided with a rubber sleeve 15 at one end position, and the rubber sleeve 15 extends into the inner position of the front cone cap 12. The outer wall of the rear cone cap 11 is provided with a water blocking fan group 10, and the outer wall of the rear cone cap 11 corresponding to the rubber sleeve 15 and the water blocking fan group 10 is provided with a water seepage hole 14.

[0038] Scheme description: as shown in example one, although the front cone cap 12 has a certain pressure relief ability, its pressure relief ability is limited, and the instantaneous impact generated at the moment of changing the opening degree of the front cone cap 12 is large, so the rear cone cap 11 needs to be used in cooperation, and its process includes the following contents:

[0039] S4: the essence of the rear cone cap 11 is that it is directly installed in the valve body 1 through the inner water pipe, so it does not have the ability to move, but the water blocking fan group 10 on the outer wall has the ability to rotate. On the one hand, it uses the instantaneous impact of the fluid to drive the water blocking fan group 10 to rotate quickly to "consume" part of the instantaneous impact, but the key role of the water blocking fan group 10 is to temporarily limit the structure of the fluid. In this process, when the fluid quickly passes through the water blocking fan group 10, part of the fluid will be pumped into the inner position of the rear cone cap 11 through the water seepage hole 14, causing the rubber sleeve 15 to expand and deform towards the front cone cap 12 under the hydraulic pressure of the fluid, which will generate a leftward thrust on the front cone cap 12, so that in this process the fluid will also generate a rightward pressure on the front cone cap 12, which will match the thrust generated by the rubber sleeve 15, and the liquid itself will reduce the negative effects of the instantaneous impact;

[0040] S5: in addition to S4: the overall device in addition to the elastic member of the rubber sheath 15 does not need to be provided with other elastic members, but the present application is not based on the buffering capacity of the rubber sheath 15, the specific process is mainly to utilize the backflushing direction of the fluid in the rear cone cap 11, but the rear cone cap 11 will not be subjected to instantaneous impact and has the moving ability to the right, ensuring that the fluid under the condition of instantaneous impact is pumped into the rear cone cap 11 as much as possible, so that the rubber sheath 15 is completely inflated and cooperates with the front cone cap 12, which needs to be simply explained: the setting position of the water outlet needs to be limited, when the front cone cap 12 completely blocks the flow passage cavity, the fluid at the right position inside the valve body will flow out through the water outlet.

[0041] Example three: combine example one and example two to supplement the circuit tank group:

[0042] The inner water pipe is installed at the other end position of the rear cone cap 11, and the rear cone cap 11 is fixedly connected between the inner water pipe and the valve body 1, the rear water jacket 8 is fixedly connected between the inner water pipe and the valve body 1, and the rear water jacket 8 is in communication with the inner water pipe and the rear cone cap 11, the top end positions of the front water jacket 3, the middle water jacket 4 and the rear water jacket 8 are on the same horizontal plane, and the middle water jacket 4 and the rear water jacket 8 are in communication with the inner part of the water collecting sleeve 5, the top end positions of the middle water jacket 4 and the rear water jacket 8 are on the same horizontal plane, and the top end position of the front water jacket 3 is lower than the top end position of the middle water jacket 4, a connecting hose is installed between the top end position of the front water jacket 3 and the water collecting sleeve 5, the water collecting sleeve 5 and the rear water jacket 8 are provided with a push rod assembly 6 and a liquid level sensor 7 at the upper end position, and the inner upper end position of the water collecting sleeve 5 is provided with a piston block 13 corresponding to the push rod assembly 6.

[0043] Scheme description: first, the setting positions of the front water jacket 3, the middle water jacket 4 and the rear water jacket 8 are described, among which the front water jacket 3 is set close to the switching opening degree of the front cone cap 12, and the rear water jacket 8 is mainly in communication with the rear cone cap 11, and the middle water jacket 4 is only used as the middle part of the two, which can be directly understood as: when the fluid flows normally in the valve body 1, the fluid completely fills the front water jacket 3, the middle water jacket 4 and the rear water jacket 8, and because of the communication relationship among the three, part of the fluid will also be completely injected into the water collecting sleeve 5;

[0044] When the current cone cap 12 completely blocks the flow passage cavity, the fluid at the right side of the valve body inside is completely discharged, causing the fluid inside the front water jacket 3 and the middle water jacket 4 to be completely discharged, but the fluid in the rear water jacket 8 will also flow back due to the pressure failure of the rubber sleeve 15, causing the liquid level inside to be lowered. Due to the principle of liquid level balance, the rear water jacket 5 is used as a connecting structure between the middle water jacket 4 and the rear water jacket 8, and part of the fluid in the rear water jacket 8 will flow back to the water collecting jacket 5 and flow into the middle water jacket 4. In this process, the liquid level in the rear water jacket 8 is aligned with the horizontal plane position of the connecting point between the rear water jacket 5 and the rear water jacket 8.

[0045] State one: When the current cone cap 12 switches from a completely blocked state to a certain opening, the fluid under the condition of instantaneous impact force is preferentially filled into the front water jacket 3, and then is pumped into the rear cone cap 11 due to the blockage of the water blocking fan group 10. In this process, the fluid in the rear cone cap 11 also causes the liquid level in the rear water jacket 8 to rise, and the fluid pumped into the front water jacket 3 also enters the water collecting jacket 5. Under the principle of liquid level balance, the fluid in the rear water jacket 8 also enters the middle water jacket 4. In this state, because there is no liquid in the right side of the valve body 1, the fluid in the middle water jacket 4 may fall into the valve body 1. In the overall stage, the flow direction and flow mode of the fluid are changed through the circuit pipe group to greatly "consume" the fluid pressure, and the essence is to "overcome" the instantaneous impact force with the fluid pressure itself.

[0046] State two: When the current cone cap 12 switches from a small opening to a large opening, because the right side of the valve body 1 and the inside of the rear cone cap 11 both retain fluid, but the change in opening causes the liquid level in the rear water jacket 8 to rise significantly, and the front water jacket 3 further supplements the fluid in the water collecting jacket 5. In order to further utilize the fluid pressure to "overcome" the instantaneous impact force, the opening parameter in the process requirement can be used to drive the piston block 13 to move upward in the water collecting jacket 5 to expand the water collecting space inside the water collecting jacket 5. The purpose is that because the liquid level in the rear water jacket 8 rises and the pressure fluctuation in the front water jacket 3 has an upward trend, the fluid pressure itself is still used.

[0047] Summarize the above: whether it is state one or state two, the fluid flow process inside the valve body 1 will tend to be stable, so as to ensure that the front water jacket 3 is always filled with fluid, but the liquid level of the middle water jacket 4 and the rear water jacket 8 is always kept at the same level due to the principle of liquid level balance. Because the front water jacket 3 can preferentially sense the change of fluid pressure, the fluid flow from the front water jacket 3 to the water collecting jacket 5 increases, resulting in the liquid level in the middle water jacket 4 and the rear water jacket 8 rising. The key purpose can be directly understood: the front water jacket 3 is the "sensing structure" of fluid pressure, the middle water jacket 4 and the rear water jacket 8 are the "distributing balance structure" of fluid pressure, and the water collecting jacket 5 is the transfer structure of the three structures.

[0048] In summary: the valve applied in high-pressure fluid environment is improved, which is different from the conventional valve core structure based on the front cone cap. First, limit its structural characteristics, make it fully fit with the inner wall of the flow passage cavity to achieve the purpose of flow passage cavity plugging, and change the opening degree by using gear drive. Compared with the conventional valve core structure: the fluid flows along the outer curved surface of the front cone cap, and the reverse pressure is formed by cooperating with the slope of the front cone cap in the process of high-pressure flow. The key is that the rear cone cap does not have the action ability, but the fluid cooperating with the instantaneous impact force will rush into the rear cone cap, and drive the rubber skin sleeve to expand instantaneously. The purpose is to reduce the working burden of the structure by the fluid pressure itself, which does not depend on the buffering capacity of the elastic piece to bear pressure. Secondly, the principle of liquid level balance is used to "distribute and balance" the instantaneous impact force.

[0049] The above content is only an example and description of the structure of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined by the present claims.

[0050] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the application disclosed above are only to facilitate the elucidation of the application. The preferred embodiments do not describe all the details of the application and limit the application to the specific embodiments. Obviously, many modifications and variations can be made in light of the teachings above. The description is chosen and described in order to provide the best illustration of the application and its practical application to those skilled in the art and to enable those skilled in the art to utilize the application in its best mode. The application is only limited by the claims and their full scope and equivalents.

Claims

1. An industrial valve for high-pressure fluid, comprising a valve body (1), characterized in that: The valve body (1) is provided with a front cone cap (12) and a rear cone cap (11) in sequence along the flow direction of the fluid, and a flow channel cavity corresponding to the front cone cap (12) and the rear cone cap (11) is opened inside the valve body (1); The cross sections of the front cone cap (12) and the rear cone cap (11) are in a transverse cone shape, and the diameter of the front cone cap (12) increases along the flow direction of the fluid, and the diameter of the rear cone cap (11) decreases along the flow direction of the fluid, and the maximum diameter of the rear cone cap (11) is smaller than the maximum diameter of the front cone cap (12), the outer wall of the front cone cap (12) matches the inner wall of the flow channel cavity, and the outer wall of the front cone cap (12) is in an inward curved arc shape along the direction close to the center point of the flow channel cavity, and the outer wall of the rear cone cap (11) is in an outward curved arc shape along the direction close to the inner wall of the flow channel cavity; The valve body (1) is provided with a circuit pipe group consisting of a front water jacket (3), a middle water jacket (4), a water collection jacket (5) and a rear water jacket (8); the front water jacket (3), the middle water jacket (4) and the water collection jacket (5) are installed on the upper side of the outer wall of the valve body (1); the front water jacket (3) and the middle water jacket (4) are in communication with the interior of the flow channel cavity, while the interior of the water collection jacket (5) is not in communication with the flow channel cavity.

2. An industrial valve for high-pressure fluid according to claim 1, characterized in that: The valve body (1) is provided with a water inlet and a water outlet at two end positions corresponding to the front cone cap (12) and the rear cone cap (11), respectively. The water outlet is provided at the lower side of the outer wall of the valve body (1).

3. An industrial valve for high-pressure fluid according to claim 2, characterized in that: A mounting sleeve (2) is installed on the outer wall of the valve body (1) corresponding to the water injection port, a gear valve stem assembly (9) is provided in the mounting sleeve (2), a valve stem is installed at one end of the front cone cap (12), the valve stem is slidably connected to the valve body (1), and the gear valve stem assembly (9) includes a driving gear and a toothed ring provided on the valve stem.

4. An industrial valve for high-pressure fluid according to claim 1, characterized in that: A gap is provided between one end of the rear cone cap (11) and the front cone cap (12); a rubber sheath (15) is installed on one end of the rear cone cap (11), and the rubber sheath (15) extends into the interior of the front cone cap (12).

5. An industrial valve for high-pressure fluid according to claim 4, characterized in that: The outer wall of the rear cone cap (11) is rotatably mounted with a water blocking fan assembly (10), and the rear cone cap (11) is provided with water seepage openings (14) corresponding to the outer wall positions of the rubber cover (15) and the water blocking fan assembly (10).

6. An industrial valve for high-pressure fluid according to claim 5, characterized in that: An inner water pipe is installed at the other end of the rear cone cap (11), and the rear cone cap (11) is fixedly connected to the valve body (1) through the inner water pipe. The rear water jacket (8) is fixedly connected to the inner water pipe, and the rear water jacket (8) is communicated with the interior of the rear cone cap (11) through the inner water pipe.

7. An industrial valve for high-pressure fluid according to claim 1, characterized in that: The top ends of the middle water jacket (4) and the rear water jacket (8) are located on the same horizontal plane, the top end of the front water jacket (3) is located lower than the top end of the middle water jacket (4), the middle water jacket (4) and the rear water jacket (8) are connected to the inside of the water collection jacket (5), the connection points of the middle water jacket (4), the rear water jacket (8) and the water collection jacket (5) are located on the same horizontal plane, and a connecting hose is installed between the top end of the front water jacket (3) and the water collection jacket (5).

8. An industrial valve for high-pressure fluid according to claim 7, characterized in that: The upper ends of the water collection sleeve (5) and the rear water jacket (8) are respectively provided with a push rod assembly (6) and a liquid level sensor (7), and the upper end of the water collection sleeve (5) is provided with a piston block (13) corresponding to the push rod assembly (6).

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