Circulating water pump pressure regulating device and using method thereof

Abstract

The invention discloses a circulating water pump pressure regulating device and a using method thereof, and relates to the field of circulating water pumps, the circulating water pump pressure regulating device comprises an outer pipe assembly, the outer pipe assembly is connected with the liquid inlet end and the liquid outlet end of a circulating pump, and the outer pipe assembly and the circulating pump form an inner circulating route; the first connecting pipe is connected with the end of the mounting sleeve and the liquid inlet end of the circulating pump through flange plates, the second connecting pipe is connected with the end of the mounting sleeve and the liquid outlet end of the circulating pump through flange plates, and the pressure relief assembly is arranged in the mounting sleeve. By means of the arrangement mode that the circulating pump and the outer pipe assembly are matched, the installation sleeve, the first connecting pipe and the second connecting pipe can form an inner circulation route with the circulating pump, and when the liquid inlet end or the liquid outlet end of the circulating pump is blocked, the pressure relief assembly can effectively guide fluid in the installation sleeve to flow; therefore, risks of blockage and damage of the circulating pump are reduced, and reliability and durability of the circulating pump are improved.

Description

Technical Field

[0001] The invention relates to the field of circulating water pumps, and in particular to a circulating water pump pressure regulating device and a use method thereof. Background Art

[0002] The working principle of the circulating water pump is mainly to drive the impeller to rotate through the rotating pump shaft, thereby generating a pressure difference, causing the liquid to flow. The liquid is sucked in from the liquid inlet end of the pump, accelerated by the action of the impeller and pushed to the liquid outlet end, forming a closed loop.

[0003] When the liquid inlet or outlet of the circulating pump is blocked, the continuous operation of the pump body may cause a series of serious faults and problems. For example, the fluid inside the pump body cannot flow, resulting in increased friction and energy loss of the pump, thereby generating a large amount of heat. Overheating may cause deformation of the pump body material and damage to the seals. In severe cases, it may even cause fire or other safety hazards. High temperature and high pressure will cause physical damage to the pump body. The pump body may crack, deform, or even rupture, resulting in overall failure of the pump. Seal failure may cause medium leakage and impair the normal operation of the pump. Furthermore, when the circulation water pump is not found to be blocked, the continuous operation of the circulating water pump will cause damage to the pump body and reduce its service life, thus posing a certain defect. Summary of the invention

[0004] The object of the present invention is to provide a circulating water pump pressure regulating device and a method of using the same to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a circulating water pump pressure regulating device, used for pressure relief protection of a circulating pump, comprising: An outer tube assembly, the outer tube assembly is connected to the liquid inlet and the liquid outlet of the circulation pump, the outer tube assembly and the circulation pump form an internal circulation route, and the outer tube assembly includes: The installation sleeve is arranged on the front of the circulation pump; A flange plate and a first connecting pipe, wherein the first connecting pipe is respectively connected to an end of the mounting sleeve and a liquid inlet end of the circulating pump through the flange plate; A second connecting pipe, the second connecting pipe is connected to an end of the mounting sleeve and a liquid outlet end of the circulating pump respectively through a flange plate; The pressure relief component is arranged inside the installation sleeve, and the pressure relief component is used to change the connectivity of the installation sleeve according to the pressure difference between the liquid inlet end and the liquid outlet end of the circulation pump.

[0006] Preferably, the outer tube assembly further comprises: A limit assembly, the limit assembly is arranged inside the mounting sleeve, and the limit assembly is linked with the pressure relief assembly; An adjusting component, the adjusting component is arranged inside the mounting sleeve, and the adjusting component is used to change the limiting elastic force of the limiting component acting on the pressure relief component; A driving assembly is arranged on a side of the mounting sleeve facing the circulating pump, and the driving assembly is linked with the adjusting assembly.

[0007] Preferably, the pressure relief assembly comprises: A sealing seat, the sealing seat is slidably sleeved inside the mounting sleeve, a sealing leather sleeve is fixedly sleeved on the outer wall of the sealing seat, and the sealing seat is connected to the limit assembly; A sealing plug, one end of the outer wall of the sealing plug is slidably sleeved with the sealing seat; A cross piece, wherein the cross piece is fixedly connected to one side of the sealing plug, and one side of the cross piece is in contact with the flange plate; A clamping seat is fixedly connected to the interior of the mounting sleeve, and the end of the outer wall of the cross piece is slidably clamped with the clamping seat.

[0008] Preferably, the limiting component comprises: A limiting collar, the limiting collar is slidably sleeved inside the mounting sleeve; A first spring, wherein the first spring is arranged between the limiting collar and the sealing seat; A bellows sleeve, the bellows sleeve is installed between the limiting collar and the sealing seat, and the bellows sleeve is sleeved on the outside of the first spring; A guide column, one end of which is fixedly connected to a sealing seat, an outer wall of the guide column is slidably sleeved with a first spring, and an outer wall of the guide column is slidably interlaced with a limiting collar.

[0009] Preferably, the limiting component further includes: A sealing sleeve, the sealing sleeve is slidably sleeved on one end of the outer wall of the guide column, the sealing sleeve is fixedly installed on a side of the limiting ring away from the sealing seat, and the sealing sleeve is connected to the adjustment component; A pressure sensor, wherein the pressure sensor is installed inside the sealing sleeve; a second spring, wherein the second spring is sleeved inside the sealing sleeve and is located between the pressure sensor and the guide column; A pressure gauge is mounted on the mounting sleeve.

[0010] Preferably, the adjustment component comprises: A connecting ring, the connecting ring is slidably sleeved on the outside of the mounting sleeve, and one side of the connecting ring is fixedly connected to the sealing sleeve; A guide block, the guide block is fixedly connected to the other side of the connecting ring, and a driving groove with an inclined inner wall is provided on one side of the guide block; A bidirectional screw, which is disposed inside the mounting sleeve and is connected to the driving assembly; An extrusion block is threadedly connected to the outside of the bidirectional screw, and one side of the extrusion block is extruded and fit with the inner wall of the driving groove.

[0011] Preferably, the adjustment component further comprises: A mounting block, one side of which is fitted with the flange plate, an end of the outer wall of the bidirectional screw is rotatably connected to the mounting block, and one side of the inner wall of the mounting sleeve is provided with a groove matching the mounting block; A guide rod, the end of which is fixedly connected to the mounting block, and the outer wall of the guide rod is slidably interlaced with the extrusion block; The slider is fixedly connected to the outside of the connecting ring and the limiting ring respectively, the inner wall of the mounting sleeve is provided with a sliding groove, and the outer wall of the slider is slidably engaged with the inner cavity of the sliding groove.

[0012] Preferably, the driving assembly comprises: A shaft rod, the outer wall of which is slidably interlaced with the mounting sleeve; A clamping piece, wherein the clamping piece is fixedly connected to one end of the shaft rod, and one end of the bidirectional screw rod is provided with a clamping groove matching the clamping piece; A sealing collar, wherein the sealing collar is fixedly sleeved on the outside of the shaft; The fixed cover is sleeved on the outside of the sealing ring and fixedly installed on the side of the installation sleeve facing the circulation pump.

[0013] Preferably, the driving assembly further comprises: A driving cap, wherein the driving cap is sleeved on the end of the outer wall of the shaft; A limiting rod, the end of which is fixedly connected to the driving cap, and a limiting groove matching the limiting rod is provided on one side of the fixed cover; A connecting block, the connecting block is fixedly connected to the outside of the shaft, and the inner wall of the driving cap is provided with a connecting groove corresponding to the connecting block; A fixing block, wherein the fixing block is fixedly connected to the inside of the connecting groove; A fixing rod, the end of which is fixedly connected to the fixing block, and the outer wall of the fixing rod is slidably inserted and sleeved with the connecting block; The third spring is sleeved on the outside of the fixing rod and is located between the connecting block and the fixing block.

[0014] The present invention also provides a method for using a circulating water pump pressure regulating device, comprising the following specific steps: Step 1: When the circulating pump is not working, the pressure inside the installation sleeve measured by the pressure gauge is the same as the external atmospheric pressure, and the count of the pressure sensor is the elastic pressure of the second spring; Step 2: When the circulating pump works normally, the pressure inside the installation sleeve measured by the pressure gauge is the same as the pressure at the liquid inlet end of the circulating pump. At this time, under the action of the first spring and the second spring, the sealing seat and the sealing plug cooperate to seal the inside of the installation sleeve, that is, the internal circulation route is in a blocked state; Step three: When the liquid inlet and outlet of the circulating pump are blocked and the circulation is not flowing, the pressure difference between the liquid inlet and outlet of the circulating pump increases, and the sealing seat is separated from the sealing plug, and the internal circulation route is in a connected state, that is, the liquid in the liquid outlet of the circulating pump flows into the liquid inlet of the circulating pump through the second connecting pipe, the installation sleeve and the first connecting pipe, balancing the pressure inside the circulating pump.

[0015] Technical effects and advantages of the present invention: (1) The present invention utilizes a configuration in which a circulation pump and an outer tube assembly cooperate. The outer tube assembly includes a mounting sleeve, a first connecting pipe, a second connecting pipe and a pressure relief assembly. The mounting sleeve, the first connecting pipe and the second connecting pipe can form an internal circulation route with the circulation pump. When the liquid inlet or outlet of the circulation pump is blocked, the pressure relief assembly can effectively guide the flow of the fluid inside the mounting sleeve, thereby reducing the risk of blockage and damage to the circulation pump and improving the reliability and durability of the circulation pump. (2) The present invention utilizes a configuration in which the pressure relief component, the limit component and the adjustment component are coordinated, so that under the action of the adjustment component, the limit component can adjust the elastic force of the sealing seat on the pressure relief component. This adjustment mechanism allows the liquid inlet and outlet ends of the circulation pump to remain connected to the outer tube component under different pressure difference conditions, thereby effectively protecting the circulation pump and improving the safety and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the overall structure of the installation sleeve of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the installation sleeve of the present invention.

[0019] Figure 4 It is a schematic diagram of the internal structure of the limiting collar of the present invention.

[0020] Figure 5 It is a schematic diagram of the internal structure of the sealing seat of the present invention.

[0021] Figure 6 It is a schematic diagram of the overall structure of the sealing plug of the present invention.

[0022] Figure 7 It is a schematic diagram of the internal structure of the connecting ring of the present invention.

[0023] Figure 8 It is a schematic diagram of the overall structure of the connecting ring of the present invention.

[0024] Fig. 9 It is a schematic diagram of the internal structure of the fixed cover of the present invention from top view.

[0025] In the figure: 1, circulating pump; 2, outer tube assembly; 21, mounting sleeve; 22, flange plate; 23, first connecting pipe; 24, second connecting pipe; 25, pressure relief assembly; 251, sealing seat; 252, sealing plug; 253, cross piece; 254, clamping seat; 26, limit assembly; 261, limit collar; 262, first spring; 263, corrugated sleeve; 264, guide column; 265, sealing sleeve; 266, pressure sensor; 267, second spring; 26 8. Pressure gauge; 27. Adjustment assembly; 271. Connecting collar; 272. Guide block; 273. Bidirectional screw; 274. Extrusion block; 275. Mounting block; 276. Guide rod; 277. Slider; 28. Drive assembly; 281. Shaft; 282. Connector; 283. Sealing collar; 284. Fixing cover; 285. Drive cap; 286. Connecting block; 287. Fixing block; 288. Fixing rod; 289. Third spring; 2810. Limit rod. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] The present invention provides Figure 1-9 A circulating water pump pressure regulating device is shown, which is used for pressure relief protection of the circulating pump 1.

[0028] Example 1 The outer tube assembly 2 includes an outer tube assembly 2, which is connected to the liquid inlet end and the liquid outlet end of the circulation pump 1. The outer tube assembly 2 and the circulation pump 1 form an internal circulation route, so that the circulation pump 1 is in operation. The outer tube assembly 2 includes a mounting sleeve 21, a flange plate 22, a first connecting pipe 23, a second connecting pipe 24 and a pressure relief assembly 25. The mounting sleeve 21 is arranged on the front of the circulation pump 1. The first connecting pipe 23 is connected to the end of the mounting sleeve 21 and the liquid inlet end of the circulation pump 1 through the flange plate 22, that is, the inner cavity of the first connecting pipe 23 is connected to the inner cavity of the circulation pump 1 near the liquid inlet end. The second connecting pipe 24 is connected to the inner cavity of the circulation pump 1 near the liquid inlet end through the flange plate 22. The second connecting pipe 24 is respectively connected to the end of the mounting sleeve 21 and the liquid outlet of the circulation pump 1, the inner cavity of the second connecting pipe 24 is connected to the side of the inner cavity of the circulation pump 1 close to the liquid outlet, and the pressure relief component 25 is arranged inside the mounting sleeve 21. The pressure relief component 25 is used to change the connection of the mounting sleeve 21 according to the pressure difference between the liquid inlet and the liquid outlet of the circulation pump 1, that is, when the pressure difference between the liquid inlet and the liquid outlet of the circulation pump 1 is greater than the pressure required for opening the pressure relief component 25, the inner circulation route formed by the outer tube component 2 and the circulation pump 1 is connected, thereby avoiding the continuous increase of the internal pressure of the circulation pump 1, thereby improving the service life of the circulation pump 1.

[0029] In particular, the outer tube assembly 2 also includes a limit assembly 26, an adjustment assembly 27 and a drive assembly 28. The limit assembly 26 is arranged inside the mounting sleeve 21, and the limit assembly 26 is located on the side of the pressure relief assembly 25 facing the first connecting pipe 23. The limit assembly 26 and the pressure relief assembly 25 form a linkage, that is, the limit assembly 26 can give the pressure relief assembly 25 an elastic limit force, so that when the pressure difference between the liquid inlet end and the liquid outlet end of the circulating pump 1 is greater than the elastic force of the limit assembly 26 acting on the pressure relief assembly 25, the pressure relief assembly 25 is in an open state, the adjusting component 27 is arranged inside the mounting sleeve 21, the adjusting component 27 is located on the side of the limiting component 26 away from the pressure relief component 25, the adjusting component 27 is used to change the limiting elastic force of the limiting component 26 on the pressure relief component 25, the driving component 28 is arranged on the side of the mounting sleeve 21 facing the circulating pump 1, the driving component 28 and the adjusting component 27 form a linkage, under the action of the driving component 28, the adjusting component 27 can change the elastic limiting force of the limiting component 26 on the pressure relief component 25.

[0030] Furthermore, the pressure relief assembly 25 includes a sealing seat 251, a sealing plug 252, a cross piece 253 and a clamping seat 254. The sealing seat 251 is slidably sleeved inside the mounting sleeve 21. The outer wall of the sealing seat 251 is fixedly sleeved with a sealing leather sleeve, which can improve the sealing performance between the sealing seat 251 and the mounting sleeve 21. The sealing seat 251 is connected to the limiting assembly 26, and one end of the outer wall of the sealing plug 252 is slidably sleeved with the sealing seat 251. Figure 3As shown, when the sealing plug 252 is docked with the sealing seat 251, the mounting sleeve 21 can be sealed, so that the internal circulation route is in a blocked state, and the circulating pump 1 operates normally. The cross piece 253 is fixedly connected to one side of the sealing plug 252, and one side of the cross piece 253 is fitted with the flange plate 22. The clamping seat 254 is fixedly connected to the inside of the mounting sleeve 21, and the end of the outer wall of the cross piece 253 is slidably engaged with the clamping seat 254. Therefore, under the action of the clamping seat 254 and the flange plate 22, the cross piece 253 can drive the sealing plug 252 to be stably installed in the inside of the mounting sleeve 21. By removing the flange plate 22, the sealing plug 252 and the sealing seat 251 can be removed from both sides of the mounting sleeve 21.

[0031] Furthermore, the limiting assembly 26 includes a limiting ring 261, a first spring 262, a corrugated sleeve 263 and a guide column 264. The limiting ring 261 is slidably sleeved inside the mounting sleeve 21. The first spring 262 is arranged between the limiting ring 261 and the sealing seat 251. The first spring 262 can give the sealing seat 251 an elastic force, so that the sealing seat 251 and the sealing plug 252 are docked. The corrugated sleeve 263 is installed between the limiting ring 261 and the sealing seat 251. The corrugated sleeve 263 is sleeved on the outside of the first spring 262. One end of the guide column 264 is fixedly connected to the sealing seat 251. The outer wall of the guide column 264 is slidably sleeved with the first spring 262. The outer wall of the guide column 264 is slidably and interlaced with the limiting ring 261.

[0032] Furthermore, the limiting assembly 26 also includes a sealing sleeve 265, a pressure sensor 266, a second spring 267 and a pressure gauge 268. The sealing sleeve 265 is slidably sleeved on one end of the outer wall of the guide column 264. The sealing sleeve 265 is fixedly installed on the side of the limiting collar 261 away from the sealing seat 251. The sealing sleeve 265 is connected to the adjustment assembly 27. The pressure sensor 266 is installed inside the sealing sleeve 265. The second spring 267 is sleeved inside the sealing sleeve 265. The sealing sleeve 265 and the corrugated sleeve 263 can form a chamber that seals and supports the guide column 264, the first spring 262 and the second spring 267 to prevent the installation sleeve 21 from entering the liquid and causing corrosion to it. The second spring 267 is located between the pressure sensor 266 and the guide column 26 4, and the second spring 267 can also give the sealing seat 251 an elastic force through the guide column 264, and when the sealing seat 251 is connected to the sealing plug 252, the value measured by the pressure sensor 266 is the same as the elastic force of the second spring 267 acting on the pressure sensor 266. When the sealing seat 251 is separated from the sealing plug 252, the sealing seat 251 squeezes the second spring 267 through the guide column 264, and the value measured by the pressure sensor 266 increases, thereby detecting the change in the monitoring data of the pressure sensor 266, and the internal connection state of the installation sleeve 21 can be obtained. The pressure gauge 268 is installed on the installation sleeve 21. The pressure gauge 268 and the pressure sensor 266 both use wireless communication technology to transmit data, which belongs to the prior art and will not be introduced in detail here.

[0033] Example 2 On the basis of Example 1, the adjustment component 27 includes a connecting ring 271, a guide block 272, a bidirectional screw 273, an extrusion block 274, a mounting block 275, a guide rod 276 and a slider 277. The connecting ring 271 is slidably sleeved on the outside of the mounting sleeve 21, one side of the connecting ring 271 is fixedly connected to the sealing sleeve 265, the guide block 272 is fixedly connected to the other side of the connecting ring 271, one side of the guide block 272 is provided with a driving groove with an inclined inner wall, and the bidirectional screw 273 is arranged on the inner wall of the mounting sleeve 21. The bidirectional screw 273 is connected to the driving assembly 28, and the extrusion block 274 is threadedly connected to the outside of the bidirectional screw 273, and one end of the extrusion block 274 is provided with an inclined slope matching the inner wall of the driving groove, and one side of the extrusion block 274 is pressed and fitted with the inner wall of the driving groove, so that the bidirectional screw 273 is rotated to drive the two extrusion blocks 274 to move relative to each other, and the extrusion block 274 can push the connecting ring 271 toward the sealing seat 251 through the guide block 272, so that the sealing sleeve 265 pushes the limiting ring 261 toward the sealing seat 251. The sealing seat 251 moves, increasing the elastic force of the first spring 262 and the second spring 267 on the sealing seat 251, and vice versa reducing the elastic force of the first spring 262 and the second spring 267 on the sealing seat 251. One side of the mounting block 275 is fitted with the flange plate 22, and the end of the outer wall of the bidirectional screw 273 is rotatably connected with the mounting block 275. A groove matching the mounting block 275 is provided on one side of the inner wall of the mounting sleeve 21, that is, the mounting block 275 is clamped in the groove, and under the action of the flange plate 22, it can be ensured that the mounting block 275 75 installation stability, the end of the guide rod 276 is fixedly connected to the mounting block 275, the outer wall of the guide rod 276 is slidably inserted and sleeved with the extrusion block 274, the slider 277 is respectively fixedly connected to the outside of the connecting ring 271 and the limiting ring 261, the inner wall of the mounting sleeve 21 is provided with a sliding groove, the outer wall of the slider 277 is slidably engaged with the inner cavity of the sliding groove, under the action of the slider 277, the elastic force of the first spring 262 and the second spring 267 acting on the sealing seat 251 can be improved to be installed in the mounting sleeve 21 Stability.

[0034] Furthermore, the drive assembly 28 includes a shaft 281, a clamping piece 282, a sealing ring 283 and a fixing cover 284. The outer wall of the shaft 281 is slidably inserted and sleeved with the mounting sleeve 21. The clamping piece 282 is fixedly connected to one end of the shaft 281. One end of the bidirectional screw 273 is provided with a clamping groove matching the clamping piece 282. Under the action of the clamping piece 282, the shaft 281 can drive the bidirectional screw 273 to rotate synchronously. The sealing ring 283 is fixedly sleeved on the outside of the shaft 281. The fixing cover 284 is sleeved on the outside of the sealing ring 283. The fixing cover 284 is fixedly installed on the side of the mounting sleeve 21 facing the circulating pump 1. Under the action of the fixing cover 284 and the sealing ring 283, not only the stability of the installation of the shaft 281 can be guaranteed, but also the sealing of the connection between the shaft 281 and the mounting sleeve 21 can be improved.

[0035] Furthermore, the drive assembly 28 also includes a drive cap 285, a limit rod 2810, a connecting block 286, a fixing block 287, a fixing rod 288 and a third spring 289. The drive cap 285 is sleeved on the end of the outer wall of the shaft 281, and the end of the limit rod 2810 is fixedly connected to the drive cap 285. A limit groove matching the limit rod 2810 is provided on one side of the fixing cover 284. When the limit rod 2810 is engaged with the limit groove, the drive cap 285 can be engaged and limited to the shaft 281, thereby ensuring the stability of the bidirectional screw 273 after the adjustment is completed. The connecting block 286 is fixedly connected to the outside of the shaft 281, and the inner wall of the drive cap 285 is provided with a limit groove matching the connecting block 2810. 6 corresponding connecting groove, under the action of the connecting block 286, the driving cap 285 can keep a synchronous rotation state with the shaft rod 281, the fixing block 287 is fixedly connected to the inside of the connecting groove, the end of the fixing rod 288 is fixedly connected to the fixing block 287, the outer wall of the fixing rod 288 is slidably inserted and sleeved with the connecting block 286, the third spring 289 is sleeved on the outside of the fixing rod 288, the third spring 289 is located between the connecting block 286 and the fixing block 287, the third spring 289 can give the driving cap 285 an elastic force toward the installation sleeve 21 through the fixing block 287, so that the driving cap 285 drives the limiting rod 2810 to maintain a stable clamping state with the limiting groove on the fixing cover 284.

[0036] The present invention also provides a method for using a circulating water pump pressure regulating device, comprising the following specific steps: Step 1: When the circulating pump 1 is not working, the pressure inside the installation sleeve 21 measured by the pressure gauge 268 is the same as the external atmospheric pressure, and the count of the pressure sensor 266 is the elastic pressure of the second spring 267; Step 2: When the circulation pump 1 is working normally, the pressure inside the installation sleeve 21 measured by the pressure gauge 268 is the same as the pressure at the liquid inlet end of the circulation pump 1. At this time, under the action of the first spring 262 and the second spring 267, the sealing seat 251 cooperates with the sealing plug 252 to seal the inside of the installation sleeve 21, that is, the internal circulation route is in a blocked state; Step 3: When the liquid inlet and outlet of the circulation pump 1 are blocked and not circulated, the pressure difference between the liquid inlet and outlet of the circulation pump 1 increases, and the sealing seat 251 is separated from the sealing plug 252, and the internal circulation route is in a connected state, that is, the liquid in the liquid outlet of the circulation pump 1 flows into the liquid inlet of the circulation pump 1 through the second connecting pipe 24, the installation sleeve 21 and the first connecting pipe 23, and the pressure inside the circulation pump 1 is balanced. Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circulating water pump pressure regulating device, used for pressure relief protection of a circulating pump (1), characterized in that: include: An outer tube assembly (2), the outer tube assembly (2) being connected to a liquid inlet end and a liquid outlet end of a circulation pump (1), the outer tube assembly (2) and the circulation pump (1) forming an internal circulation route, the outer tube assembly (2) comprising: A mounting sleeve (21) is arranged on the front side of the circulating pump (1); A flange plate (22) and a first connecting pipe (23), wherein the first connecting pipe (23) is respectively connected to an end of the mounting sleeve (21) and a liquid inlet end of the circulating pump (1) through the flange plate (22); a second connecting pipe (24), the second connecting pipe (24) being respectively connected to an end of the mounting sleeve (21) and a liquid outlet end of the circulating pump (1) through a flange plate (22); A pressure relief component (25) is arranged inside the mounting sleeve (21), and the pressure relief component (25) is used to change the connectivity of the mounting sleeve (21) according to the pressure difference between the liquid inlet end and the liquid outlet end of the circulation pump (1).

2. A circulating water pump pressure regulating device according to claim 1, characterized in that: The outer tube assembly (2) further comprises: a position limiting assembly (26), the position limiting assembly (26) being arranged inside the mounting sleeve (21), the position limiting assembly (26) being linked to the pressure relief assembly (25); an adjusting component (27), the adjusting component (27) being arranged inside the mounting sleeve (21), the adjusting component (27) being used to change the limiting elastic force of the limiting component (26) acting on the pressure relief component (25); A drive assembly (28), wherein the drive assembly (28) is arranged on a side of the mounting sleeve (21) facing the circulation pump (1), and the drive assembly (28) is linked with the adjustment assembly (27).

3. A circulating water pump pressure regulating device according to claim 2, characterized in that: The pressure relief assembly (25) comprises: A sealing seat (251), the sealing seat (251) is slidably sleeved inside the mounting sleeve (21), a sealing leather sleeve is fixedly sleeved on the outer wall of the sealing seat (251), and the sealing seat (251) is connected to the limit assembly (26); A sealing plug (252), wherein one end of an outer wall of the sealing plug (252) is slidably sleeved with the sealing seat (251); A cross piece (253), wherein the cross piece (253) is fixedly connected to one side of the sealing plug (252), and one side of the cross piece (253) is in contact with the flange plate (22); A clamping seat (254) is fixedly connected to the interior of the mounting sleeve (21), and an end of an outer wall of the cross piece (253) is slidably clamped with the clamping seat (254).

4. A circulating water pump pressure regulating device according to claim 3, characterized in that: The limiting component (26) comprises: A limiting collar (261), wherein the limiting collar (261) is slidably sleeved inside the mounting sleeve (21); A first spring (262), the first spring (262) being arranged between the limiting collar (261) and the sealing seat (251); A bellows sleeve (263), the bellows sleeve (263) being installed between the limiting collar (261) and the sealing seat (251), the bellows sleeve (263) being sleeved on the outside of the first spring (262); A guide column (264), one end of which is fixedly connected to the sealing seat (251), an outer wall of the guide column (264) is slidably sleeved with the first spring (262), and an outer wall of the guide column (264) is slidably interlaced with the limiting ring (261).

5. A circulating water pump pressure regulating device according to claim 4, characterized in that: The limiting component (26) further includes: A sealing sleeve (265), the sealing sleeve (265) being slidably sleeved on one end of the outer wall of the guide column (264), the sealing sleeve (265) being fixedly mounted on a side of the limiting collar (261) facing away from the sealing seat (251), and the sealing sleeve (265) being connected to the adjustment assembly (27); A pressure sensor (266), wherein the pressure sensor (266) is installed inside the sealing sleeve (265); a second spring (267), the second spring (267) being sleeved inside the sealing sleeve (265), the second spring (267) being located between the pressure sensor (266) and the guide column (264); A pressure gauge (268), wherein the pressure gauge (268) is mounted on the mounting sleeve (21).

6. A circulating water pump pressure regulating device according to claim 5, characterized in that: The regulating component (27) comprises: A connecting ring (271), the connecting ring (271) being slidably sleeved on the outside of the mounting sleeve (21), and one side of the connecting ring (271) being fixedly connected to the sealing sleeve (265); A guide block (272), the guide block (272) being fixedly connected to the other side of the connecting ring (271), and one side of the guide block (272) is provided with a driving groove with an inclined inner wall; A bidirectional screw rod (273), wherein the bidirectional screw rod (273) is disposed inside the mounting sleeve (21), and the bidirectional screw rod (273) is connected to the driving assembly (28); An extrusion block (274) is threadedly connected to the outside of the bidirectional screw rod (273), and one side of the extrusion block (274) is extruded and fits with the inner wall of the driving groove.

7. A circulating water pump pressure regulating device according to claim 6, characterized in that: The adjustment component (27) further comprises: A mounting block (275), one side of the mounting block (275) being in contact with the flange plate (22), an end of an outer wall of the bidirectional screw rod (273) being rotatably connected to the mounting block (275), and one side of an inner wall of the mounting sleeve (21) being provided with a groove matching the mounting block (275); A guide rod (276), the end of the guide rod (276) being fixedly connected to the mounting block (275), and the outer wall of the guide rod (276) being slidably interlaced and sleeved with the extrusion block (274); A slider (277) is fixedly connected to the outside of the connecting ring (271) and the limiting ring (261), respectively; a sliding groove is provided on the inner wall of the mounting sleeve (21); and the outer wall of the slider (277) is slidably engaged with the inner cavity of the sliding groove.

8. A circulating water pump pressure regulating device according to claim 7, characterized in that: The driving assembly (28) comprises: A shaft rod (281), wherein the outer wall of the shaft rod (281) is slidably inserted and sleeved with the mounting sleeve (21); A clamping member (282), the clamping member (282) being fixedly connected to one end of the shaft (281), and one end of the bidirectional screw (273) being provided with a clamping groove matching the clamping member (282); A sealing collar (283), wherein the sealing collar (283) is fixedly sleeved on the outside of the shaft (281); A fixed cover (284), wherein the fixed cover (284) is sleeved on the outside of the sealing collar (283), and the fixed cover (284) is fixedly mounted on a side of the mounting sleeve (21) facing the circulating pump (1).

9. A circulating water pump pressure regulating device according to claim 8, characterized in that: The drive assembly (28) further comprises: A driving cap (285), wherein the driving cap (285) is sleeved on an end portion of an outer wall of the shaft rod (281); A limiting rod (2810), wherein an end of the limiting rod (2810) is fixedly connected to the driving cap (285), and a limiting groove matching the limiting rod (2810) is formed on one side of the fixing cover (284); A connecting block (286), the connecting block (286) being fixedly connected to the outside of the shaft (281), and the inner wall of the driving cap (285) is provided with a connecting groove corresponding to the connecting block (286); A fixing block (287), the fixing block (287) being fixedly connected to the interior of the connecting groove; A fixing rod (288), the end of which is fixedly connected to the fixing block (287), and the outer wall of the fixing rod (288) is slidably inserted and sleeved with the connecting block (286); A third spring (289), wherein the third spring (289) is sleeved on the outside of the fixing rod (288), and the third spring (289) is located between the connecting block (286) and the fixing block (287).

10. A method for using a circulating water pump pressure regulating device according to any one of claims 1 to 9, characterized in that: The specific usage steps are as follows: Step 1: When the circulation pump (1) is not working, the pressure inside the installation sleeve (21) measured by the pressure gauge (268) is the same as the external atmospheric pressure, and the count of the pressure sensor (266) is the elastic pressure of the second spring (267); Step 2: When the circulation pump (1) is working normally, the pressure inside the installation sleeve (21) measured by the pressure gauge (268) is the same as the pressure at the liquid inlet end of the circulation pump (1). At this time, under the action of the first spring (262) and the second spring (267), the sealing seat (251) and the sealing plug (252) cooperate to seal the inside of the installation sleeve (21), that is, the internal circulation route is in a blocked state; Step 3: When the liquid inlet and liquid outlet of the circulation pump (1) are blocked and the pressure difference between the liquid inlet and liquid outlet of the circulation pump (1) increases, the sealing seat (251) is separated from the sealing plug (252), and the internal circulation route is in a connected state, that is, the liquid in the liquid outlet of the circulation pump (1) flows into the liquid inlet of the circulation pump (1) through the second connecting pipe (24), the installation sleeve (21) and the first connecting pipe (23), thereby balancing the pressure inside the circulation pump (1).

Images