Multi-sealing type fluorine-lined pump

Abstract

The utility model relates to the technical field of industrial conveying equipment, in particular to a multiple sealing type fluorine lining pump which comprises a fluorine lining pump body, a pump cover is installed at the left end of the fluorine lining pump body, a polytetrafluoroethylene impeller is arranged in an inner cavity of the pump cover, and the left side of the inner cavity of the pump cover is communicated with a feeding pipe. The top of an inner cavity of the pump cover communicates with a discharging pipe, the other end of the discharging pipe and the other end of the feeding pipe are each provided with a sealing connecting assembly, and each sealing connecting assembly comprises a conveying pipe, a second sealing ring, a first sealing ring, a fastening bolt and a double-T-shaped clamping block. Through the arrangement of the sealing connection assembly, the fixing ring can be positioned and clamped in advance through the cooperation of the double-T-shaped clamping block and the clamping groove, then the fastening bolt penetrates through the double-T-shaped insertion hole in a matched mode, the fastening nut is installed in a sleeved mode, and primary sealing protection is conducted through the cooperation of the two first sealing rings; and the arc-shaped raised head and the second sealing ring are matched to perform secondary sealing protection on the joint of the fastening bolt and the double-T-shaped insertion hole, so that the overall sealing performance is better.

Description

Technical Field

[0001] This utility model relates to the field of industrial conveying equipment technology, and in particular to a multi-sealed fluoropolymer-lined pump. Background Technology

[0002] Fluorine-lined pumps are pumps with an inner lining of fluoroplastics. Their main feature is that the metal pump body is lined with fluoroplastics (such as polytetrafluoroethylene propylene F46) to improve corrosion resistance and mechanical strength. They are widely used in chemical, pharmaceutical and environmental protection fields, and perform particularly well when conveying corrosive media such as strong acids, strong alkalis and strong oxidants.

[0003] A search revealed that the announcement number is CN218093476U, and the name is "A Multi-Sealed Fluorine-Lined Centrifugal Pump, Including a Base Plate." Research and analysis showed that although the thickness of the inner lining inside the casing can be determined by adjusting the wear level and resistance of the inner lining, it still has the following drawbacks to some extent.

[0004] For example, this equipment is generally connected to external pipelines via flange connections. However, the simple flange design is prone to leakage during use when the single gasket ages and wears out, or when the gasket is misaligned due to improper installation. It does not have the function of double sealing protection and has certain limitations. In order to solve the above technical problems, we have designed a multi-seal fluoropolymer-lined pump. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-seal fluoropolymer-lined pump with the advantage of sealing protection. It solves the problem that the equipment is generally connected to the external pipeline by flange connection. However, the simple flange design is prone to leakage when the single gasket ages and wears or the gasket is misaligned due to improper installation and operation. It does not have the function of dual sealing protection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-sealed fluoropolymer-lined pump, comprising a fluoropolymer-lined pump body, a pump cover installed at the left end of the pump body, a polytetrafluoroethylene impeller disposed in the inner cavity of the pump cover, a feed pipe connected to the left side of the inner cavity of the pump cover, a discharge pipe connected to the top of the inner cavity of the pump cover, and a sealing connection assembly installed at the other end of the discharge pipe and the feed pipe, the sealing connection assembly comprising a transmission pipe, a second sealing ring, a first sealing ring, a fastening bolt, and a double T-shaped locking block, a fixing ring fixedly fitted on the outer ring of the transmission pipe, the feed pipe, and the discharge pipe, and an arc-shaped protrusion fixedly connected to the outer ring of the second sealing ring.

[0007] Preferably, the transmission pipe is in communication with the discharge pipe and the feed pipe, and the second sealing ring is located outside the first sealing ring.

[0008] Preferably, the surface of the fixing ring is provided with a receiving groove for use with the first sealing ring, and the outer side of the arc-shaped protrusion is provided with a groove for use with the fastening bolt.

[0009] Preferably, the surface of the fixing ring is provided with a double T-shaped insertion hole for use with the fastening bolt, and one end of the fastening bolt passes through the double T-shaped insertion hole and is threaded with a fastening nut.

[0010] Preferably, the outer ring of the fixing ring has a slot, which is adapted to the double T-shaped locking block.

[0011] Preferably, a housing is fixedly connected to the right side of the fluorine-lined pump body, a heat dissipation motor is installed in the inner cavity of the housing, and a dustproof screen is screwed on the right side of the housing.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model, by setting a sealing connection component, has the advantage of sealing protection. The double T-shaped locking block and the locking groove cooperate to pre-position and lock the fixing ring. Then, the fastening bolt passes through the double T-shaped insertion hole and the fastening nut is installed. The two first sealing rings cooperate to provide primary sealing protection, while the arc-shaped protrusion and the second sealing ring cooperate to provide secondary sealing protection at the connection between the fastening bolt and the double T-shaped insertion hole, resulting in better overall sealing performance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 This is a bottom-view perspective view of the structure of this utility model;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the structure of this utility model;

[0017] Figure 4 This is a perspective view of the sealing connection assembly of this utility model when it is separated.

[0018] In the diagram: 1. Fluorine-lined pump body; 2. Outer shell; 3. Discharge pipe; 4. Sealing connection assembly; 401. Transmission pipe; 402. Fixing ring; 403. Receiving groove; 404. Second sealing ring; 405. Groove; 406. Arc-shaped protrusion; 407. First sealing ring; 408. Fastening nut; 409. Fastening bolt; 410. Double T-shaped locking block; 411. Double T-shaped insertion hole; 412. Slot; 5. Feed pipe; 6. Pump cover; 7. Cooling motor; 8. Dustproof net; 9. PTFE impeller. Detailed Implementation

[0019] Please see Figures 1-4A multi-seal fluoropolymer-lined pump includes a fluoropolymer-lined pump body 1. A pump cover 6 is installed on the left end of the fluoropolymer-lined pump body 1. A polytetrafluoroethylene impeller 9 is provided in the inner cavity of the pump cover 6. A feed pipe 5 is connected to the left side of the inner cavity of the pump cover 6. A discharge pipe 3 is connected to the top of the inner cavity of the pump cover 6. A sealing connection assembly 4 is installed at the other end of the discharge pipe 3 and the feed pipe 5. The sealing connection assembly 4 includes a transmission pipe 401, a second sealing ring 404, a first sealing ring 407, a fastening bolt 409, and a double T-shaped locking block 410. By setting the first sealing ring 407, it can play a primary sealing role in the installed state to avoid contact leakage. The outer rings of the transmission pipe 401, the feed pipe 5, and the discharge pipe 3 are all fixedly fitted with fixing rings 402. The outer ring of the second sealing ring 404 is fixedly connected with an arc-shaped protrusion 406.

[0020] Please see Figure 3 and Figure 4 The transmission pipe 401 is connected to the discharge pipe 3 and the feed pipe 5. The second sealing ring 404 is located outside the first sealing ring 407. By setting the second sealing ring 404, it can be fitted onto the outer ring of the first sealing ring 407, which is conducive to the quick positioning and installation of the second sealing ring 404.

[0021] Please see Figure 3 and Figure 4 The surface of the fixing ring 402 is provided with a storage groove 403 for use with the first sealing ring 407. By providing the storage groove 403, the installation space requirements of the first sealing ring 407 can be met. The outer side of the arc-shaped protrusion 406 is provided with a groove 405 for use with the fastening bolt 409. By providing the groove 405, a shape that can be formed to cooperate with the fastening bolt 409 can be formed. In the installed state, the contact area between the arc-shaped protrusion 406 and the fastening bolt 409 is increased, thereby improving the overall sealing performance.

[0022] Please see Figure 3 and Figure 4 The surface of the fixing ring 402 is provided with a double T-shaped insertion hole 411 for use with the fastening bolt 409. One end of the fastening bolt 409 passes through the double T-shaped insertion hole 411 and is threaded with a fastening nut 408. By setting the fastening nut 408 and the fastening bolt 409, the two fixing rings 402 can be fixed in the installation state.

[0023] Please see Figure 3 and Figure 4 The outer ring of the fixing ring 402 has a slot 412, which is adapted to the double T-shaped block 410. By setting the double T-shaped block 410 and the slot 412, it can play the role of pre-fixing in the installation state, which can free up the operator's hands.

[0024] Please see Figure 1 and Figure 3The right side of the fluorine-lined pump body 1 is fixedly connected to the outer shell 2. By setting the outer shell 2, the installation requirements of the heat dissipation motor 7 and the dustproof net 8 can be met. The heat dissipation motor 7 is set in the inner cavity of the outer shell 2, and the dustproof net 8 is installed by screws on the right side of the outer shell 2. By setting the heat dissipation motor 7 and the dustproof net 8, the gas can flow in or out through the dustproof net 8 when the heat dissipation motor 7 is rotating, so as to play the role of heat dissipation protection.

[0025] The fluorine-lined pump body 1 is equipped with a dual-shaft motor. The output end of the left side of the dual-shaft motor is fixedly connected to the pump cover 6, and the output end of the right side of the dual-shaft motor is fixedly connected to the cooling motor 7. Thus, when the fluorine-lined pump body 1 is working, the dual-shaft motor drives the pump cover 6 and the cooling motor 7 to rotate synchronously, which can simultaneously play the role of conveying the medium and heat dissipation protection.

[0026] In practical applications, both ends of the double T-shaped card block 410 are fixedly connected with protrusions. The protrusions are designed to protrude from the fixed ring 402. This design makes it convenient for the staff to pinch the protrusions and drive the double T-shaped card block 410 to move outward.

[0027] In practical applications, the second sealing ring 404 is a split design, consisting of inner and outer sides, which are located on the inner and outer sides of the fastening bolt 409. This facilitates placement and installation, allowing the two split arc-shaped protrusions 406 to cooperate to form a circumferential seal on the fastening bolt 409, ensuring overall sealing performance.

[0028] In use, all components are in their initial state. When it is necessary to connect the discharge pipe 3 with the transmission pipe 401 and the feed pipe 5 with the transmission pipe 401, firstly, move the fixing ring 402 so that the two fixing rings 402 are close to each other. The first sealing ring 407 is placed in the receiving groove 403, and the second sealing ring 404 is sleeved on the outer ring of the first sealing ring 407. Then, rotate the fixing ring 402 so that the two slots 412 are aligned. Push the fixing ring 402 to move it, so that the first sealing ring 407 and the second sealing ring 404 are squeezed. After the second sealing ring 404 and the first sealing ring 407 expand under pressure, they squeeze each other, further improving the sealing performance. Then, move the double T-shaped locking block 410 into the slot 412 to complete the initial locking. The installation process frees up the operator's hands. The fastening bolt 409 is then moved through the double T-shaped socket 411, and placed within the groove 405. The fastening nut 408 is then screwed in, completing the locking installation of the two fixing rings 402. The two first sealing rings 407 work together to achieve primary sealing protection. The arc-shaped protrusion 406 provides secondary sealing protection at the connection between the fastening bolt 409 and the double T-shaped socket 411, better meeting actual usage requirements. Compared to the single sealing of a simple flange, it significantly reduces the possibility of leakage, especially under high pressure or extreme temperature conditions, where its sealing performance is more reliable. In long-term operation, it reduces equipment damage and downtime caused by leakage, thereby extending the overall service life of the equipment.

[0029] In summary, this multi-seal fluoropolymer-lined pump, by setting up the sealing connection component 4, solves the problem that the equipment generally uses flange connections to connect with external pipelines. However, the simple flange design is prone to leakage during use when the single gasket ages and wears, or when improper installation or operation causes the gasket to be misaligned. This results in the lack of dual sealing protection.

Claims

1. A multiple seal fluorine-lined pump comprising an inner fluorine-lined pump body (1), characterized by: The left end of the lining fluorine pump body (1) is provided with a pump cover (6), the inner cavity of the pump cover (6) is provided with a polytetrafluoroethylene impeller (9), the left side of the inner cavity of the pump cover (6) is communicated with a feeding pipe (5), the top of the inner cavity of the pump cover (6) is communicated with a discharge pipe (3), the other end of the discharge pipe (3) and the feeding pipe (5) is provided with a sealing connection assembly (4), the sealing connection assembly (4) comprises a transmission pipe (401), a second sealing ring (404), a first sealing ring (407), a fastening bolt (409) and a double T type clamping block (410), the outer ring of the transmission pipe (401), the feeding pipe (5) and the discharge pipe (3) is fixedly provided with a fixed ring (402), and the outer ring of the second sealing ring (404) is fixedly connected with an arc-shaped protrusion (406).

2. The multiple seal fluoropolymer lined pump of claim 1 wherein: The transmission pipe (401) and the discharge pipe (3), the transmission pipe (401) and the feeding pipe (5) are in communication state, and the second sealing ring (404) is located outside the first sealing ring (407).

3. The pump according to claim 1, wherein: The surface of the fixed ring (402) is provided with a receiving groove (403) matched with the first sealing ring (407), and the outer side of the arc-shaped protrusion (406) is provided with a groove (405) matched with the fastening bolt (409).

4. The multiple seal fluoropolymer lined pump of claim 1 wherein: The surface of the fixed ring (402) is provided with a double T type jack (411) matched with the fastening bolt (409), one end of the fastening bolt (409) penetrates the double T type jack (411) and is threadedly provided with a fastening nut (408).

5. The multiple seal fluoropolymer lined pump of claim 1 wherein: The outer ring of the fixed ring (402) is provided with a clamping groove (412), and the clamping groove (412) is matched with the double T type clamping block (410).

6. The multiple seal fluoropolymer lined pump of claim 1 wherein: The right side of the lining fluorine pump body (1) is fixedly connected with a shell (2), the inner cavity of the shell (2) is provided with a heat dissipation motor (7), and the right side of the shell (2) is screw-mounted with a dustproof net (8).

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