CN213298245U - Reciprocating pump stuffing box with flushing function - Google Patents
Reciprocating pump stuffing box with flushing function Download PDFInfo
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- CN213298245U CN213298245U CN202022418448.9U CN202022418448U CN213298245U CN 213298245 U CN213298245 U CN 213298245U CN 202022418448 U CN202022418448 U CN 202022418448U CN 213298245 U CN213298245 U CN 213298245U
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- plunger
- box body
- sealing element
- water inlet
- stuffing
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Abstract
The utility model discloses a reciprocating pump stuffing box with a flushing function, which comprises a plunger, a first-stage box body and a second-stage box body, wherein the first-stage box body and the second-stage box body are sleeved on the plunger, one end of the second-stage box body is embedded between the plunger and the first-stage box body and is fixedly connected with the first-stage box body through threads, a first sealing element is arranged between the first-stage box body and the plunger, a second sealing element is arranged between the second-stage box body and the plunger, and the first sealing element and the second sealing element are sleeved on; a packing gland is fixed on the outer side of the secondary box body, is sleeved on the plunger and tightly presses the second sealing element between the secondary box body and the plunger; the water inlet hole is formed in the packing gland, the outlet of the water inlet hole is communicated with the surface of the plunger, and the water inlet joint is arranged on the surface of the packing gland corresponding to the water inlet hole, so that water can be conveniently introduced into the surface of the plunger to dissolve, dilute and remove the crystallized particles. The stuffing box has a flushing function, can remove residual crystal particles on the surface of the plunger, and effectively avoids plunger damage.
Description
Technical Field
The utility model belongs to the technical field of reciprocating pump, concretely relates to reciprocating pump stuffing box with washing function.
Background
In a reciprocating pump, a plunger reciprocates to seal the plunger and prevent a conveying medium from leaking out of the pump or outside air from entering the pump, and a stuffing box needs to be arranged outside the plunger.
As shown in fig. 1, a stuffing box of a reciprocating pump in the prior art comprises a primary box body 2, a secondary box body 3, a stuffing nut 4 and a plunger 1, wherein the primary box body 2 and the secondary box body 3 are sleeved on the plunger 1, one end of the secondary box body 3 is embedded between the plunger 1 and the primary box body 2 and is fixedly connected with the primary box body through a thread, a first sealing element is arranged between the primary box body 2 and the plunger 1, a second sealing element is arranged between the secondary box body 3 and the plunger 1, the first sealing element and the second sealing element are sleeved on the plunger 1, and the first sealing element and the second sealing element are respectively composed of two plunger bushings 6 and a plurality of stuffing 5 arranged between the two plunger bushings; the packing nut 4 is sleeved on the plunger and is partially inserted into the secondary box 3 and is fixed with the secondary box 3 in a threaded mode so as to press the second sealing piece between the secondary box 3 and the plunger 1. When the reciprocating pump is used for conveying easily-crystallized media, a small amount of conveying media can be remained between the packing nut and the plunger in the reciprocating motion process of the plunger, the conveying media can be slowly crystallized if not cleaned in time after the pump is stopped, medium crystals 7 are formed, and the plunger can be damaged when the pump is started next time. At present, the common method is that an external water pipe directly aims at a packing nut for repeated washing before a pump is started, and medium crystals are dissolved and diluted by a small amount of water entering a gap so as to remove the medium crystals, so that the operation is simple and rough, the purpose is not strong, and water resources are wasted; and if the conveying medium has radiativity, the staff holds the wash pipe and washes, has the potential safety hazard.
In addition, because the packing nut and the secondary box body of the packing box of the conventional reciprocating pump are in threaded connection and are both made of 06Cr19Ni10, the phenomenon of thread burning is easy to occur in the connection and fixation process.
Disclosure of Invention
The aforesaid to prior art exists not enoughly, the utility model aims at providing a reciprocating pump stuffing box with washing function, this stuffing box has washing function, can detach the remaining crystallization granule in plunger surface, effectively avoids the plunger to damage.
The technical scheme of the utility model is realized like this:
a reciprocating pump stuffing box with a flushing function comprises a plunger, a primary box body and a secondary box body, wherein the primary box body and the secondary box body are sleeved on the plunger, one end of the secondary box body is embedded between the plunger and the primary box body and is fixedly connected with the primary box body through threads, a first sealing element is arranged between the primary box body and the plunger, a second sealing element is arranged between the secondary box body and the plunger, and the first sealing element and the second sealing element are sleeved on the plunger; a packing gland is fixed on the outer side of the secondary box body, is sleeved on the plunger and tightly presses the second sealing element between the secondary box body and the plunger; the water inlet hole is formed in the packing gland, the outlet of the water inlet hole is communicated with the surface of the plunger, and the water inlet joint is arranged on the surface of the packing gland corresponding to the water inlet hole and used for being connected with the water inlet pipe, so that water can be conveniently introduced into the surface of the plunger to dissolve, dilute and remove the crystallized particles.
Furthermore, a plurality of through holes penetrating through two end faces of the packing gland are formed in the packing gland, correspondingly, bolt holes corresponding to all the through holes are formed in the outer end face of the secondary box body, and fastening bolts penetrate through the through holes and are inserted into the corresponding bolt holes so as to fix the packing gland on the secondary box body.
Further, the first sealing element and the second sealing element are respectively composed of two plunger bushings and a plurality of fillers arranged between the two plunger bushings, and the plunger bushings and all the fillers are distributed along the axial direction of the plunger.
Furthermore, one end of each of the first sealing element and the second sealing element is provided with a pre-tightening spring, and the pre-tightening springs are sleeved on the plunger to provide pre-tightening force for the sealing elements, so that the sealing effect is prevented from being influenced by the deformation of the packing.
Furthermore, the water inlet connector is connected with the control unit, so that the control unit can be operated remotely to control the opening and closing of the water inlet connector conveniently.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model adopts the packing gland to replace the packing nut, so that the joint of the packing gland and the second-stage box body has no threaded connection, thereby avoiding the situation of thread burning; simultaneously through set up the inlet opening on the pressure lid that packs, the sparge water passes through the inlet opening and gets into the plunger surface, dissolves the dilution to the crystallization granule on plunger surface, then discharges, and reasonable in design like this also can effectively avoid opening the pump back plunger and damaged by remaining crystallization granule strain to effectively protect the plunger.
2. The utility model discloses can realize getting rid of crystalline particles by remote control, not only improve work efficiency, but also can effectively protect the staff.
Drawings
Fig. 1-a schematic view of the structure of a prior art reciprocating pump stuffing box.
Fig. 2-the structure of the present invention.
Wherein: 1-a plunger; 2-first-stage box body; 3-a secondary box body; 4-a packing nut; 4' -packing gland; 5-a filler; 6-plunger bushing; 7-medium crystallization; 8-a water inlet joint; 9-fastening bolts; 10-pre-tightening the spring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2, a reciprocating pump stuffing box with a flushing function comprises a plunger 1, a primary box body 2 and a secondary box body 3, wherein the primary box body 2 and the secondary box body 3 are sleeved on the plunger 1, one end of the secondary box body 3 is embedded between the plunger 1 and the primary box body 2 and is fixedly connected with the primary box body 2 through threads, a first sealing element is arranged between the primary box body 2 and the plunger 1, a second sealing element is arranged between the secondary box body 3 and the plunger 1, and the first sealing element and the second sealing element are sleeved on the plunger 1; a packing gland 4 'is fixed on the outer side of the secondary box body 3, the packing gland 4' is sleeved on the plunger 1 and tightly presses the second sealing element between the secondary box body 3 and the plunger 1; the water inlet hole is formed in the packing gland 4 ', the outlet of the water inlet hole is communicated with the surface of the plunger 1, and the water inlet connector 8 is arranged on the outer surface of the packing gland 4' corresponding to the water inlet hole and used for being connected with a water inlet pipe, so that water can be conveniently introduced into the surface of the plunger 1 to dissolve, dilute and remove the crystallized particles.
Therefore, the existing packing nut is improved into the packing gland, and the water inlet hole is formed in the packing gland. When the pump needs to be started, water is introduced in advance to wash the crystal particles on the surface of the plunger, so that the crystal particles are dissolved and diluted to be removed, and the washing water can be discharged through an original discharge leakage opening on a packing box of the reciprocating pump. After the pump is started, the plunger cannot be damaged by being pulled by the crystalline particles when reciprocating.
The gland should play a role in compressing the second sealing element, and correspondingly, an outward protruding cylinder should be arranged on the inner end face of the gland, and when the gland is fixed on the secondary box body, the protruding cylinder is inserted between the secondary box body and the plunger to compress the second sealing element.
Meanwhile, the joint of the packing gland and the secondary box body is not connected by threads, so that the thread burning condition does not exist.
In specific implementation, a plurality of through holes penetrating through two end faces of the packing gland 4 ' are formed in the packing gland 4 ', correspondingly, bolt holes corresponding to all the through holes are formed in the outer end face of the secondary box body 3, and fastening bolts 9 penetrate through the through holes and are inserted into the corresponding bolt holes so as to fix the packing gland 4 ' on the secondary box body 3.
In specific implementation, the first sealing element and the second sealing element are respectively composed of two plunger bushes 6 and a plurality of fillers 5 arranged between the two plunger bushes 6, and the plunger bushes 6 and all the fillers 5 are distributed along the axial direction of the plunger.
As can be seen from fig. 2, the number of the packing used for the first sealing element is four, the number of the packing used for the second sealing element is two, and the plunger bushing and the packing are both sleeved on the plunger. The two plunger bushes can play a limiting role in all the fillers arranged between the two plunger bushes, and when external force acts on the two plunger bushes, the fillers between the two plunger bushes are elastically deformed, so that a sealing effect is achieved.
During specific implementation, one end of the first sealing element and one end of the second sealing element are respectively provided with a pre-tightening spring 10, and the pre-tightening spring 10 is sleeved on the plunger piston 1 to provide pre-tightening force for the sealing elements, so that the sealing effect is prevented from being influenced by filler deformation.
Generally, the packing can deform and loosen in the using process, so that regular inspection is needed, the packing is in a compression state, and the sealing effect is further ensured. The packing nut needs to be regularly rotated to the current reciprocating pump stuffing box to guarantee sealed effect, and here sets up the pretension spring after, even the packing takes place to warp, but because the existence of pretension spring pretightning force, the pretension spring can warp and compensate, is in the axial state of compressing tightly all the time in order to guarantee to pack, thereby need not regularly to patrol and examine, has reduced working strength.
During the concrete implementation, water supply connector 8 is connected with the control unit, and the remote operation control unit of being convenient for controls opening and close of water supply connector 8.
Therefore, the remote control flushing device does not need to be operated on the site of a workshop, is particularly suitable for being used for damaging the bodies of workers when a medium with radiation is conveyed, can achieve the purpose of flushing through remote control, and is high in efficiency and capable of protecting the workers.
Finally, it should be noted that the above-mentioned embodiments of the present invention are only examples for illustrating the present invention, and are not limitations to the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.
Claims (5)
1. A reciprocating pump stuffing box with a flushing function comprises a plunger, a primary box body and a secondary box body, wherein the primary box body and the secondary box body are sleeved on the plunger, one end of the secondary box body is embedded between the plunger and the primary box body and is fixedly connected with the primary box body through threads, a first sealing element is arranged between the primary box body and the plunger, a second sealing element is arranged between the secondary box body and the plunger, and the first sealing element and the second sealing element are sleeved on the plunger; the device is characterized in that a packing gland is fixed on the outer side of the secondary box body, is sleeved on the plunger and tightly presses the second sealing element between the secondary box body and the plunger; the water inlet hole is formed in the packing gland, the outlet of the water inlet hole is communicated with the surface of the plunger, and the water inlet joint is arranged on the surface of the packing gland corresponding to the water inlet hole and used for being connected with the water inlet pipe, so that water can be conveniently introduced into the surface of the plunger to dissolve, dilute and remove the crystallized particles.
2. The reciprocating pump stuffing box with flushing function of claim 1 wherein there are several through holes on the stuffing gland through both end faces of the stuffing gland, correspondingly, there are bolt holes corresponding to all the through holes on the outer end face of the secondary box body, and fastening bolts are inserted into the corresponding bolt holes through the through holes to fix the stuffing gland on the secondary box body.
3. The reciprocating pump stuffing box with flushing function of claim 1 wherein the first sealing element and the second sealing element are composed of two plunger bushes and several stuffing materials between the two plunger bushes, respectively, and the plunger bushes and all the stuffing materials are distributed along the axial direction of the plunger.
4. The reciprocating pump stuffing box with flushing function as recited in claim 3, wherein one end of the first sealing element and one end of the second sealing element are respectively provided with a pre-tightening spring, and the pre-tightening springs are sleeved on the plunger to provide pre-tightening force to the sealing elements, so that the stuffing deformation is prevented from influencing the sealing effect.
5. The reciprocating pump stuffing box with flushing function of claim 1 wherein the water inlet joint is connected to the control unit for facilitating remote operation of the control unit to control the opening and closing of the water inlet joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022418448.9U CN213298245U (en) | 2020-10-27 | 2020-10-27 | Reciprocating pump stuffing box with flushing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022418448.9U CN213298245U (en) | 2020-10-27 | 2020-10-27 | Reciprocating pump stuffing box with flushing function |
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| Publication Number | Publication Date |
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| CN213298245U true CN213298245U (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022418448.9U Active CN213298245U (en) | 2020-10-27 | 2020-10-27 | Reciprocating pump stuffing box with flushing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658647A (en) * | 2022-02-26 | 2022-06-24 | 德帕姆(杭州)泵业科技有限公司 | Plunger type reciprocating pump with multi-loop hydraulic combination |
-
2020
- 2020-10-27 CN CN202022418448.9U patent/CN213298245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114658647A (en) * | 2022-02-26 | 2022-06-24 | 德帕姆(杭州)泵业科技有限公司 | Plunger type reciprocating pump with multi-loop hydraulic combination |
| CN114658647B (en) * | 2022-02-26 | 2024-02-09 | 德帕姆(杭州)泵业科技有限公司 | Plunger type reciprocating pump with multi-loop hydraulic combination |
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