Mechanical seal chemical pump and using method thereof

Abstract

The invention discloses a mechanical seal chemical pump and a using method thereof. The mechanical seal chemical pump comprises a pump shell used for pumping water and guiding flow; the leakage-proof mechanism is arranged on a body of the pump shell and comprises a fixed shaft, the outer surface of the fixed shaft is fixedly connected with the body of the pump shell in a penetrating mode, and one end of the fixed shaft extends into the pump shell, so that a connecting position is arranged in the pump shell, and liquid is prevented from directly leaking through the pump shell; a body of the fixed shaft is rotationally connected with a rotating shaft in a penetrating mode, the rotating shaft is used for driving paddles to pump water, the outer surface of the rotating shaft is sleeved with a fixed barrel, the outer surface of the fixed barrel is fixedly connected with one end of the fixed shaft, and a sealing ring is fixedly connected into the fixed barrel. The chemical pump sealing device solves the problem that when an existing chemical pump sealing device is used, due to the fact that the outer connecting position of a pump shaft is sealed, leakage is still likely to happen to the connecting position inside a pump shell, and the sealing effect on the pump shaft is limited.

Description

Technical Field

[0001] The invention relates to the technical field of chemical pump seals, and in particular to a mechanical seal chemical pump and a use method thereof. Background Art

[0002] Many mechanical sealing methods in the prior art are composed of a double sealing structure of a mechanical seal and a sealing ring. Since the position of the sealing ring is fixed, the friction contact surface between the sealing ring and the mechanical seal and the transmission shaft is large. Under the long-term rotation of the transmission shaft and the mechanical seal, the seal ring wears very quickly, resulting in a short replacement cycle for the seal ring. The invention patent with application number CN202310976003.8 discloses a shaft end mechanical sealing device for a chemical centrifugal pump, including a second pump housing. When the sealing disk rotates, the sealing disk and the fixed disk form an end face seal. Even if the liquid in the pump flows through the fixed disk, When the gap between the sealing ring and the rotating shaft is filled, the liquid will not flow out of the pump from the sealing disk and the fixed disk, thereby improving the sealing performance of the centrifugal pump. The invention patent with application number CN202311093935.4 discloses a wear-resistant and corrosion-resistant mechanical sealing device for a chemical pump, including a chemical pump body, which can greatly reduce the friction contact area between the sealing ring and the chemical pump body and the mechanical seal, thereby reducing the degree of damage to the sealing ring, and can make the sealing ring in a moving state for sealing, so as to reduce the friction between it and the chemical pump body or the mechanical seal, thereby improving the reliability and service life of the sealing ring.

[0003] Although the two devices have the above advantages, they still have certain disadvantages in actual use. Since the connection methods of the two devices are traditional, there are still connection holes on the pump casing, which makes the connection inside the pump casing prone to leakage, and the sealing measures set on the outside can only be used for blocking, so the sealing effect on the pump shaft is limited. Therefore, it is necessary to solve the problems that still exist in the above devices. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a mechanically sealed chemical pump and a method of using the same, which solves the problem that when the existing chemical pump sealing device is used, due to the sealing of the external connection of the pump shaft, the internal connection of the pump casing is still prone to leakage, thereby resulting in limited sealing effect on the pump shaft.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mechanical seal chemical pump, comprising: Pump casings for pumping water and diverting fluid; The anti-leakage mechanism is arranged on the main body of the pump casing, the anti-leakage mechanism comprises a solid shaft, the outer surface of the solid shaft penetrates and is fixedly connected with the main body of the pump casing, one end of the solid shaft extends to the interior of the pump casing, so as to set the connection position inside the pump casing to prevent the liquid from leaking directly through the pump casing, the main body of the solid shaft penetrates and is rotatably connected with a rotating shaft, the rotating shaft is used to drive the blades to pump water, the outer surface of the rotating shaft is sleeved with a solid cylinder, the outer surface of the solid cylinder is fixedly connected with one end of the solid shaft, the interior of the solid cylinder is fixedly connected with a sealing ring, the outer surface of the sealing ring is movably connected with a cone cover, the main body of the cone cover penetrates and is fixedly connected with the outer surface of the rotating shaft, a folding area is arranged on the main body of the cone cover, the cone cover is made of memory metal, heat is generated and heat is conducted by the operation of the rotating shaft, so that the cone cover extends through the folding area and continuously squeezes the sealing ring; The fixed sealing component is arranged outside the rotating shaft and is used for sealing the connection between the rotating shaft and the fixed shaft.

[0006] Preferably, a fixed sleeve is passed through and fixedly connected to the outer surface of the rotating shaft, the interior of the fixed sleeve is movably connected to the outer surface of the rotating shaft, the outer surface of the fixed shaft is fixedly connected to an I-shaped wheel, the outer surface of the I-shaped wheel is movably connected to a retaining ring, and the outer surface of the retaining ring is fixedly connected to the interior of the fixed sleeve.

[0007] Preferably, the solid sealing assembly includes a connecting sleeve, the main body of the connecting sleeve is rotatably connected with the main body of the fixed shaft, the outer surface of the connecting sleeve is fixedly connected with the outer surface of the fixed sleeve, the interior of the connecting sleeve is fixedly connected with two clamping rings, the outer surfaces of the two clamping rings are movably connected with a push ring, the outer surface of the push ring is fixedly connected with a support ring, and the outer surface of the support ring is fixedly connected to the interior of the pump casing.

[0008] Preferably, a confluence groove is provided inside the sleeve, the interior of the confluence groove is connected to a one-way valve, and the outer surface of the one-way valve is penetrated and fixedly connected with the body of the sleeve.

[0009] Preferably, an expansion unit is provided on the body of the resist ring, and the expansion unit includes an inner cavity, and the inner cavity is opened on the body of the resist ring. A film is fixedly connected to the interior of the inner cavity, and the outer surface of the film is movably connected to two resist rings. The outer surfaces of the two resist rings are movably connected to the outer surface of the resist ring, and the outer surfaces of the two resist rings are respectively fixedly connected to the outer surfaces of the two clamping rings.

[0010] Preferably, the inner cavity is connected to an air inlet hole, which is provided on the body of the retaining ring and is in a through-state, and the outer portion of the film is provided with a connecting hole, which is provided on the body of a clamping ring on one side and is in a through-state.

[0011] Preferably, an air pump module is provided on the outside of the air inlet hole, and the air pump module includes a rubber sleeve, the outer surface of the rubber sleeve is fixedly connected to the ring hole of the resist ring, the interior of the rubber sleeve is communicated with the interior of the air inlet hole, the body of the rubber sleeve is provided with a through tapered hole, the outer surface of the rubber sleeve is fixedly connected to a push ring, the ring hole of the push ring is coaxial with the tapered hole, the outer surface of the push ring is fixedly connected to a telescopic rod, and the outer surface of the telescopic rod is embedded and fixedly connected with the ring hole of the resist ring.

[0012] Preferably, a push block is fixedly connected to the outer surface of the push ring, and a through groove is provided on the body of the push block, and the interior of the through groove is connected to the annular hole of the push ring.

[0013] Preferably, a driving system is provided on the outside of the push block, and the driving system includes a resist block, the outer surface of the resist block is movably connected to the outer surface of the push block, the outer surface of the resist block is movably connected to a solid block, the outer surface of the solid block is fixedly connected to the outer surface of the solid shaft, the outer surface of the resist block is fixedly connected to a connecting plate, the outer surface of the connecting plate is movably connected to the inside of a connecting sleeve, the outer surface of the connecting plate is fixedly connected to a spring rod, and one end of the spring rod is fixedly connected to the inside of the connecting sleeve.

[0014] The present invention also discloses a method for using a mechanical seal chemical pump, which specifically comprises the following steps: Step 1: The rotating shaft drives the blades to rotate inside the pump housing to pump the liquid. During the feeding process, the rotating shaft generates heat and transfers the heat to the cone cover. The cone cover is heated and stretches through the folding area, and continuously squeezes the sealing ring, so that it fits tightly with the sealing ring. At the same time, the connection between the I-shaped wheel and the clamping ring is preliminarily sealed at the connection between the rotating shaft and the fixed shaft; Step 2: Use the connection between the connecting sleeve and the fixed sleeve to seal again, and use the connection between the back ring and the clamping rings on both sides to seal three times. If there is liquid leakage, the leaked liquid will be diverted to the inside of the confluence groove, and through the action of centrifugal force and the one-way valve, it will be transported to the inside of the pump casing again to prevent the liquid from leaking to the outside of the pump casing; Step three, the connecting sleeve rotates synchronously with the rotating shaft through the fixed sleeve, and drives the resist block to rotate synchronously through the spring rod and the connecting plate. The resist block moves through the contact with the fixed block and the push block, thereby compressing the rubber sleeve through the push block and the push ring, and at the same time closing the through groove, so that the air inside the rubber sleeve is compressed into the inner cavity, so that the rubber expands and fits tightly with the resist rings on both sides.

[0015] Beneficial Effects The present invention provides a mechanical seal chemical pump and a method for using the same. Compared with the prior art, the present invention has the following beneficial effects: (1) By setting up a leak-proof mechanism and utilizing the connection between the fixed shaft and the rotating shaft, the connection is extended to the inside of the pump casing, thereby avoiding the problem of connection on the inner wall of the pump casing and leakage under pressure. At the same time, the cone cover is heated to stretch and squeeze the sealing ring to form a tight fit, thereby improving the sealing effect of the connection.

[0016] (2) By setting up a fixed sealing assembly and utilizing the connection between the back ring and the clamping rings on both sides and the support ring, not only the rotating shaft is supported, but also the sealing of the rotating shaft connection is improved. At the same time, the confluence groove and the one-way valve can be used to collect the leaked liquid, and the leaked liquid can be discharged into the pump casing through centrifugal force and one-way flow effect, thereby preventing the liquid from leaking to the outside of the pump casing.

[0017] (3) By setting up an expansion unit, the increase of air pressure inside the inner cavity is used to make the film expand and continuously squeeze with the two side rings, thereby improving the sealing performance through close contact, and reducing wear through restoration when not working.

[0018] (4) By setting up a pump air module, the air inside the cone cover can be compressed into the inner cavity through the air inlet hole by folding the cone cover. At the same time, the cone hole is small inside and large outside, so that the air intake rate is greater than the leakage rate, so that the inside of the inner cavity can be pressurized.

[0019] (5) By setting up a driving module, the abutment block is used to abut against the push block and the fixed block at an angle, so that the abutment block can push the push block to move, thereby compressing the rubber sleeve. At the same time, during the abutment process, the abutment block can close the through groove of the push block, thereby improving the pumping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the internal structure of the pump housing of the present invention; Figure 2 A three-dimensional diagram of the internal structure of the fixed sleeve of the present invention; Figure 3 It is a three-dimensional diagram of the internal structure of the set of the present invention; Figure 4 A three-dimensional diagram of the internal structure of the retaining ring of the present invention; Figure 5 The figure is a three-dimensional diagram of the external structure of the abutment block of the present invention; Figure 6 It is a three-dimensional diagram of the internal structure of the push block of the present invention.

[0021] In the figure: 1. pump housing; 2. retaining ring; 3. fixed shaft; 4. fixed sealing assembly; 41. connecting sleeve; 42. clamping ring; 43. butt ring; 44. expansion unit; 441. inner cavity; 442. film; 443. butt ring; 444. air inlet; 445. pump air module; 4451. rubber sleeve; 4452. tapered hole; 4453. push ring; 4454. telescopic rod; 4455. push block; 4456. drive system; 44561. butt block; 44562. fixed block; 44563. connecting plate; 44564. spring rod; 4457. through groove; 446. connecting hole; 45. support ring; 46. confluence groove; 47. one-way valve; 5. rotating shaft; 6. fixed cylinder; 7. sealing ring; 8. cone cover; 9. folding area; 10. fixed sleeve; 11. I-shaped wheel. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-6 The present invention provides a technical solution: a mechanical seal chemical pump: Embodiment 1: Refer to the attached manual Figure 1 , Attachment Figure 2 ; The pump casing 1 comprises a pump casing 1, on which a leak-proof mechanism is arranged, which is arranged on the body of the pump casing 1, and which comprises a solid shaft 3, the outer surface of which is fixedly connected to the body of the pump casing 1, and one end of which extends to the interior of the pump casing 1, so that the connection position is arranged inside the pump casing 1 to prevent the liquid from leaking directly through the pump casing 1, and the body of the solid shaft 3 is rotatably connected with a rotating shaft 5, and an end of the rotating shaft 5 located inside the pump casing 1 is provided with a paddle (not shown in the figure) for pumping the liquid, and the rotating shaft 5 is used to drive the paddle to pump water, and the outer surface of the rotating shaft 5 is sleeved with a solid barrel 6, and the outer surface of the solid barrel 6 is fixedly connected to one end of the solid shaft 3, and a sealing ring 7 is fixedly connected to the interior of the solid barrel 6, and the sealing ring 7 is made of a material that is resistant to pressure, wear-resistant, corrosion-resistant and has good sealing performance, and a cone cover 8 is movably connected to the outer surface of the sealing ring 7, and the cone cover 8 is arranged to be conical, which can provide an oblique extrusion effect on the one hand, and can have a certain space with the interior of the solid barrel 6 on the other hand. , so as to facilitate the setting of the folding area 9, the body of the cone cover 8 is fixedly connected with the outer surface of the rotating shaft 5, and the folding area 9 is arranged on the body of the cone cover 8. The setting of the folding area 9 facilitates the extension and contraction of the cone cover 8. The cone cover 8 is made of memory metal. The heat generated and heat conducted by the operation of the rotating shaft 5 make the cone cover 8 extend through the folding area 9, and continuously squeeze the sealing ring 7 to enhance the sealing of the connection between the rotating shaft 5 and the solid shaft 3. The outer surface of the rotating shaft 5 is fixedly connected with a fixed sleeve 10, and the inner diameter of the solid sleeve 10 is larger than the outer diameter of the solid shaft 3, which can provide another layer of protection for the connection between the solid shaft 3 and the rotating shaft 5, and provide space for the extension of the cone cover 8. The interior of the solid sleeve 10 is movably connected with the outer surface of the rotating shaft 5, and the outer surface of the solid shaft 3 is fixedly connected with an I-shaped wheel 11, and the outer surface of the I-shaped wheel 11 is movably connected with a snap ring 2. The cooperation of the snap ring 2 and the I-shaped wheel 11 can support the rotating shaft 5 through the solid sleeve 10, and the outer surface of the snap ring 2 is fixedly connected with the interior of the solid sleeve 10.

[0024] In this embodiment, the connection between the rotating shaft 5 and the fixed shaft 3 is extended to the inside of the pump casing 1. When the rotating shaft 5 pumps liquid through the paddles, the rotating shaft 5 generates heat or transfers heat from other heat sources, so that the cone cover 8 is heated and heated, so that the cone cover 8 extends outward through the folding area 9 and squeezes the sealing ring 7. The close fit between the cone cover 8 and the sealing ring 7 improves the sealing shape of the connection. When not working, or the water pressure inside the pump casing 1 is small, the heat transferred by the rotating shaft 5 is small, and the cone cover 8 maintains its original shape to reduce wear and avoid excessive shortening of the service life.

[0025] Embodiment 2: Based on Embodiment 1, refer to the attached Figure 1 , Attachment Figure 3 ; A solid sealing assembly 4 is arranged on the outside of the solid shaft 3, and the solid sealing assembly 4 includes a sleeve 41. The body of the sleeve 41 is rotatably connected with the body of the solid shaft 3, the outer surface of the sleeve 41 is fixedly connected with the outer surface of the solid sleeve 10, and two clamping rings 42 are fixedly connected inside the sleeve 41. A butt ring 43 is movably connected between the outer surfaces of the two clamping rings 42. The butt ring 43 and the clamping ring 42 are made of materials that are pressure-resistant, wear-resistant and have good sealing properties, and the two are abutted to support the rotating shaft 5 through the sleeve 41, and the connection is sealed. A support ring 45 is fixedly connected to the outer surface of the butt ring 43, and the outer surface of the support ring 45 is fixedly connected to the inside of the pump casing 1. A confluence groove 46 is provided inside the sleeve 41, and the confluence groove 46 can collect leaked liquid. The inside of the confluence groove 46 is connected with a one-way valve 47, and the one-way valve 47 allows the leaked liquid collected inside the confluence groove 46 to flow back to the inside of the pump casing 1, and the outer surface of the one-way valve 47 is fixedly connected to the body of the sleeve 41.

[0026] In this embodiment, when the rotating shaft 5 is working, the support ring 45 supports the rotating shaft 5 through the connection between the support ring 43 and the clamping rings 42 on both sides, thereby supporting the rotating shaft 5 through the connection between the connecting sleeve 41 and the fixed shaft 3 and the fixed sleeve 10. At the same time, the support ring 43 and the clamping ring 42 form a sealing measure again, further improving the sealing effect and preventing liquid leakage.

[0027] Embodiment 3: Based on Embodiment 2, refer to the attached Figure 3 , Attachment Figure 4 ; An expansion unit 44 is provided on the body of the ring 43, and the expansion unit 44 includes an inner cavity 441. The inner cavity 441 can be provided with another pressure relief measure. When the internal pressure increases to a certain value, the pressure is relieved to avoid excessive expansion of the film 442. The inner cavity 441 is opened on the body of the ring 43. The inner cavity 441 is fixedly connected with the film 442. The film 442 is made of a material with good sealing, good ductility, pressure resistance, wear resistance, corrosion resistance and fatigue resistance. The outer surface of the film 442 is movably connected to two rings 443. The rings 443 are made of the same material as the clamp ring 42. The outer surfaces of the two rings 443 are movably connected to the outer surface of the ring 43. The outer surfaces of the two rings 443 are movably connected to the outer surface of the ring 43. The surfaces are fixedly connected to the outer surfaces of the two clamping rings 42 respectively, and the interior of the inner cavity 441 is connected with an air inlet hole 444, which can facilitate the air inside the sleeve 41 to flow into the inner cavity 441, and a plurality of air inlet holes 444 are arranged at equal angles along the axis of the ring 43, and the air inlet holes 444 are opened on the body of the ring 43 and are in a through state. The outside of the film 442 is provided with a connecting hole 446, and the connecting hole 446 can facilitate the air between the clamping rings 42 on both sides to flow into the inner cavity 441, so that the air pressure outside the film 442 is reduced, and the air pressure difference is used to further enhance the sealing shape of the connection between the film 442 and the ring 443, and the connecting hole 446 is opened on the body of the clamping ring 42 on one side and is in a through state.

[0028] In this embodiment, the air inside the sleeve 41 is compressed into the inner cavity 441 by using the air inlet hole 444, and the air between the clamping rings 42 on both sides is allowed to flow into the interior of the sleeve 41 by using the connecting hole 446, so that there is an air pressure difference on both sides of the film 442. On the one hand, the film 442 expands and comes into close contact with the abutment ring 443 to improve the sealing performance. On the other hand, the air pressure difference allows the film 442 and the abutment ring 443 to fit better.

[0029] Embodiment 4: Based on Embodiment 3, refer to the attached Figure 5 , Attachment Figure 6 ; A pump air module 445 is arranged outside the air inlet 444, and the pump air module 445 includes a rubber sleeve 4451. The rubber sleeve 4451 is in the shape of a bellows, and the air inside can be compressed into the inner cavity 441 by folding. The number and position of the rubber sleeves 4451 correspond to the air inlet 444. The outer surface of the rubber sleeve 4451 is fixedly connected to the annular hole of the ring 43, and the interior of the rubber sleeve 4451 is connected to the interior of the air inlet 444. The body of the rubber sleeve 4451 is provided with a through tapered hole 4452. The tapered hole 4452 is tapered and the outer port is larger than the inner port, so that the air intake flow rate is greater than the air outlet flow rate, so that the air can be compressed into the inner cavity 441. The outer surface of the rubber sleeve 4451 The surface is fixedly connected with a push ring 4453, the annular hole of the push ring 4453 is coaxial with the tapered hole 4452, the outer surface of the push ring 4453 is fixedly connected with a telescopic rod 4454, the telescopic rod 4454 plays the role of fixed support and movement guidance, the outer surface of the telescopic rod 4454 is embedded and fixedly connected with the annular hole of the support ring 43, the outer surface of the push ring 4453 is fixedly connected with a push block 4455, the push block 4455 can stretch and compress the rubber sleeve 4451 through movement and the action of the push ring 4453, so as to continuously compress the air into the inner cavity 441, the body of the push block 4455 is provided with a through groove 4457, the interior of the through groove 4457 is connected with the annular hole of the push ring 4453.

[0030] In this embodiment, the push block 4455 moves under the guidance of the telescopic rod 4454, so that the push ring 4453 follows the movement to compress the rubber sleeve 4451, so that the air inside the rubber sleeve 4451 is compressed to the inside of the inner cavity 441 through the air inlet hole 444. At the same time, when the push block 4455 is reset, the rubber sleeve 4451 follows the restoration, and in the restoration process, the air inside the sleeve 41 enters the inside of the rubber sleeve 4451 through the through groove 4457 and the tapered hole 4452, and due to the difference between the two ports of the tapered hole 4452, the intake volume is greater than the exhaust volume, so that the air is continuously compressed to the inside of the inner cavity 441 to maintain the expansion state of the film 442.

[0031] Embodiment 5: Based on Embodiment 4, refer to the attached Figure 1 , Attachment Figure 5 ; The push block 4455 is provided with a driving system 4456 on the outside. The driving system 4456 includes a stop block 44561. The stop block 44561 is in the shape of an isosceles triangle. The number of the stop blocks 44561 is less than or equal to the number of the push blocks 4455, so as to facilitate continuous pumping operation. The outer surface of the stop block 44561 is movably connected to the outer surface of the push block 4455. The outer surface of the stop block 44561 is movably connected to a solid block 44562. The solid block 44562 and the side of the push block 4455 in contact with the stop block 44561 are both provided with an inclined surface, so as to push the push block 4455 to move by oblique extrusion. The solid block 44562 can make the stop block 44561 move by itself by fixing it. The body height value pushes the push block 4455 to move, and a larger movement distance can be provided in a limited space. At the same time, the push block 4455 and the solid block 44562 are both magnetic, and the magnetic attraction facilitates the resetting of the push block 4455. The outer surface of the solid block 44562 is fixedly connected to the outer surface of the solid shaft 3, and the outer surface of the push block 44561 is fixedly connected to a connecting plate 44563, and the outer surface of the connecting plate 44563 is movably connected to the inside of the connecting sleeve 41. The outer surface of the connecting plate 44563 is fixedly connected to a spring rod 44564, and the elastic force of the spring rod 44564 is greater than the centrifugal force generated by the rotation of the rotating shaft 5. One end of the spring rod 44564 is fixedly connected to the inside of the connecting sleeve 41.

[0032] In this embodiment, when the spring rod 44564 rotates synchronously with the connecting sleeve 41, the output end of the spring rod 44564 drives the stop block 44561 to follow the rotation through the connecting plate 44563. During the movement, the stop block 44561 contacts the solid block 44562 and the push block 4455 synchronously through the contact between the inclined surface and the beveled surface, and continues to move. The stop block 44561 is abutted and lifted by the solid block 44562, and the output end of the spring rod 44564 is compressed for resetting. At the same time, the push block 4455 is pushed up by the stop block 44561, thereby compressing the rubber sleeve 4451. When the stop block 44561 contacts the push block 4455, one side of the through slot 4457 is closed, thereby avoiding the problem of air leakage when compressing air.

[0033] The present invention also discloses a method for using a mechanical seal chemical pump, which specifically comprises the following steps: Step 1: The rotating shaft 5 drives the blades to rotate inside the pump housing 1 to pump the liquid. During the feeding process, the rotating shaft 5 generates heat and transfers the heat to the cone cover 8. The cone cover 8 is heated and stretches through the folding area 9, and continuously squeezes the sealing ring 7, so that it fits tightly with the sealing ring 7. At the same time, the connection between the I-shaped wheel 11 and the clamping ring 2 is preliminarily sealed for the connection between the rotating shaft 5 and the fixed shaft 3; Step 2: Use the connection between the connecting sleeve 41 and the fixed sleeve 10 to seal again, and use the connection between the back ring 43 and the clamping rings 42 on both sides to seal three times. If there is liquid leakage, the leaked liquid will be diverted to the inside of the confluence groove 46, and through the centrifugal force and the one-way valve 47, it will be transported to the inside of the pump housing 1 again to prevent the liquid from leaking to the outside of the pump housing 1; Step three, the connecting sleeve 41 rotates synchronously with the rotating shaft 5 through the fixed sleeve 10, and drives the resistance block 44561 to rotate synchronously through the spring rod 44564 and the connecting plate 44563. The resistance block 44561 moves through the contact with the fixed block 44562 and the push block 4455, thereby compressing the rubber sleeve 4451 through the push block 4455 and the push ring 4453, and at the same time closing the through groove 4457, so that the air inside the rubber sleeve 4451 is compressed into the inner cavity 441, so that the film 442 expands and fits tightly with the resistance rings 443 on both sides.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

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

Claims

1. A mechanical seal chemical pump, characterized in that: include: A pump housing (1) for pumping water and conducting fluid; A leakage prevention mechanism, the leakage prevention mechanism is arranged on the body of the pump casing (1), the leakage prevention mechanism comprises a fixed shaft (3), the outer surface of the fixed shaft (3) is penetrated and fixedly connected with the body of the pump casing (1), one end of the fixed shaft (3) extends to the inside of the pump casing (1), so that the connection position is arranged inside the pump casing (1) to prevent liquid from leaking directly through the pump casing (1), the body of the fixed shaft (3) is penetrated and rotatably connected with a rotating shaft (5), the rotating shaft (5) is used to drive the blades to pump water, and the outer surface of the rotating shaft (5) is sleeved with a fixed cylinder (6), The outer surface of the fixed cylinder (6) is fixedly connected to one end of the fixed shaft (3); a sealing ring (7) is fixedly connected to the interior of the fixed cylinder (6); a cone cover (8) is movably connected to the outer surface of the sealing ring (7); the body of the cone cover (8) is fixedly connected to the outer surface of the rotating shaft (5); a folding area (9) is provided on the body of the cone cover (8); the cone cover (8) is made of memory metal; heat is generated and conducted by the operation of the rotating shaft (5), so that the cone cover (8) extends through the folding area (9) and continuously squeezes the sealing ring (7); A fixed sealing component (4), wherein the fixed sealing component (4) is arranged outside the rotating shaft (5) and is used for sealing the connection between the rotating shaft (5) and the fixed shaft (3).

2. A mechanical seal chemical pump according to claim 1, characterized in that: A fixed sleeve (10) is passed through and fixedly connected to the outer surface of the rotating shaft (5); the interior of the fixed sleeve (10) is movably connected to the outer surface of the rotating shaft (5); an I-shaped wheel (11) is fixedly connected to the outer surface of the fixed shaft (3); a clamping ring (2) is movably connected to the outer surface of the I-shaped wheel (11); and the outer surface of the clamping ring (2) is fixedly connected to the interior of the fixed sleeve (10).

3. A mechanical seal chemical pump according to claim 2, characterized in that: The fixed seal assembly (4) comprises a connecting sleeve (41), the body of the connecting sleeve (41) is rotatably connected to the body of the fixed shaft (3), the outer surface of the connecting sleeve (41) is fixedly connected to the outer surface of the fixed sleeve (10), the interior of the connecting sleeve (41) is fixedly connected to two clamping rings (42), the outer surfaces of the two clamping rings (42) are movably connected to a retaining ring (43), the outer surface of the retaining ring (43) is fixedly connected to a supporting ring (45), and the outer surface of the supporting ring (45) is fixedly connected to the interior of the pump casing (1).

4. A mechanical seal chemical pump according to claim 3, characterized in that: A confluence groove (46) is provided inside the connecting sleeve (41), and the inside of the confluence groove (46) is connected to a one-way valve (47). The outer surface of the one-way valve (47) penetrates and is fixedly connected to the body of the connecting sleeve (41).

5. A mechanical seal chemical pump according to claim 3, characterized in that: An expansion unit (44) is provided on the body of the butt ring (43), and the expansion unit (44) includes an inner cavity (441). The inner cavity (441) is opened on the body of the butt ring (43), and a film (442) is fixedly connected to the interior of the inner cavity (441). The outer surface of the film (442) is movably connected to two butt rings (443). The outer surfaces of the two butt rings (443) are both movably connected to the outer surface of the butt ring (43), and the outer surfaces of the two butt rings (443) are respectively fixedly connected to the outer surfaces of the two clamping rings (42).

6. A mechanical seal chemical pump according to claim 5, characterized in that: The inner cavity (441) is connected to an air inlet hole (444), which is provided on the body of the retaining ring (43) and is in a through-going state. The film (442) is provided with a connecting hole (446) on the outside, which is provided on the body of the clamping ring (42) on one side and is in a through-going state.

7. A mechanical seal chemical pump according to claim 6, characterized in that: An air pump module (445) is arranged outside the air inlet hole (444), and the air pump module (445) includes a rubber sleeve (4451). The outer surface of the rubber sleeve (4451) is fixedly connected to the annular hole of the retaining ring (43), and the interior of the rubber sleeve (4451) is connected to the interior of the air inlet hole (444). The body of the rubber sleeve (4451) is provided with a through tapered hole (4452). The outer surface of the rubber sleeve (4451) is fixedly connected to a push ring (4453), and the annular hole of the push ring (4453) is coaxial with the tapered hole (4452). The outer surface of the push ring (4453) is fixedly connected to a telescopic rod (4454), and the outer surface of the telescopic rod (4454) is embedded and fixedly connected to the annular hole of the retaining ring (43).

8. A mechanical seal chemical pump according to claim 7, characterized in that: The outer surface of the push ring (4453) is fixedly connected to a push block (4455), and the body of the push block (4455) is provided with a through groove (4457), and the interior of the through groove (4457) is connected to the annular hole of the push ring (4453).

9. A mechanical seal chemical pump according to claim 8, characterized in that: A driving system (4456) is arranged outside the push block (4455), and the driving system (4456) comprises a stop block (44561), the outer surface of the stop block (44561) is movably connected to the outer surface of the push block (4455), the outer surface of the stop block (44561) is movably connected to a solid block (44562), the outer surface of the solid block (44562) is fixedly connected to the outer surface of the solid shaft (3), the outer surface of the stop block (44561) is fixedly connected to a connecting plate (44563), the outer surface of the connecting plate (44563) is movably connected to the inside of the connecting sleeve (41), the outer surface of the connecting plate (44563) is fixedly connected to a spring rod (44564), and one end of the spring rod (44564) is fixedly connected to the inside of the connecting sleeve (41).

10. A method for using a mechanical seal chemical pump, using a mechanical seal chemical pump and the method for using the same as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: Step 1: The rotating shaft (5) drives the blades to rotate inside the pump housing (1) to pump the liquid. During the feeding process, the rotating shaft (5) generates heat and transfers the heat to the cone cover (8). The cone cover (8) is heated and stretches through the folding area (9), and continuously squeezes the sealing ring (7), thereby fitting tightly with the sealing ring (7). At the same time, the I-shaped wheel (11) and the clamping ring (2) are connected to preliminarily seal the connection between the rotating shaft (5) and the fixed shaft (3); Step 2: Re-sealing is performed by connecting the connecting sleeve (41) and the fixed sleeve (10), and at the same time, three-time sealing is performed by connecting the retaining ring (43) and the clamping rings (42) on both sides. If there is liquid leakage, the leaked liquid will be directed to the inside of the confluence groove (46) and transported to the inside of the pump housing (1) again through the centrifugal force and the one-way valve (47), so as to prevent the liquid from leaking to the outside of the pump housing (1); Step 3: The connecting sleeve (41) rotates synchronously with the rotating shaft (5) through the fixed sleeve (10), and drives the resisting block (44561) to rotate synchronously through the spring rod (44564) and the connecting plate (44563). The resisting block (44561) moves through contact with the fixed block (44562) and the push block (4455), thereby compressing the rubber sleeve (4451) through the push block (4455) and the push ring (4453), and at the same time closing the through groove (4457), so that the air inside the rubber sleeve (4451) is compressed into the inner cavity (441), so that the film (442) expands and fits tightly with the resisting rings (443) on both sides.

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