A slotted plunger segmented detachable pump head

Abstract

The present invention belongs to the technical field of plunger pumps, and provides a split block detachable pump head with a slot-type plunger segment. The present invention includes a pump head and a pump body, wherein the pump head and the pump body have a plunger rod inside, and the pump body includes a first pump body and a second pump body, and a vertical guide mechanism is provided between the first pump body and the second pump body, and the first pump body and the second pump body can move relative to each other according to the guide mechanism, and a stopper is provided at the end of the guide mechanism. The use of a vertical guide mechanism is conducive to the use of the deadweight of the first pump body and the second pump body to separate and disassemble the plunger pump; the provision of a stopper at the end of the guide mechanism is conducive to the use of the deadweight of the first pump body and the second pump body for installation, so that the first pump body and the second pump body will not fall out of the guide mechanism, and the two parts are ensured to be quickly and accurately installed in the corresponding positions; and because a vertical guide mechanism is adopted and a stopper is only provided at the end of the guide mechanism, when the installation conditions are limited, the first pump body and the second pump body can be installed from a horizontal direction.

Description

Technical Field

[0001] The invention relates to the technical field of plunger pumps and provides a split block detachable pump head with a slot-type plunger segment. Background Art

[0002] With the rapid development of the industry, traditional gear pumps or vane pumps can no longer meet the high pressure, high flow, constant flow and constant pressure requirements of the industry, so plunger pumps are needed to provide a suitable production environment. However, the traditional integrated plunger pump is an integrated plunger rod and a pump head that cannot be disassembled by welding, which leads to high manufacturing costs and difficult maintenance of plunger pumps in the food, pharmaceutical and biochemical industries, and cannot meet the hygiene requirements and diverse flow requirements of the food, pharmaceutical and biochemical industries. The traditional split plunger pump uses the pump head to be assembled along the axial direction of the plunger, which is difficult to assemble and disassemble for heavy and large-structured pump heads. Prior art WO2019106738A1 relates to a plunger pump, including a pump body, a plunger and a plunger drive unit, in which the base end of the plunger is held by the front end in a manner that the plunger protrudes from the front end of the pump body, and moves in the axial direction of the plunger in the pump body; and a pump head, at least including a pump head having a pump chamber provided inside for inserting the front end of the plunger, and having the following shape, that is, when the central axis of the plunger is substantially consistent with the central axis of the pump chamber, the plunger drive unit moves to a specified position on the front end side of the pump body, and is arranged at the front end of the pump body in a state that it can move relative to the pump body in a direction perpendicular to the axial direction of the plunger, and is fixed to the front end of the pump body by a positional relationship that can be engaged with the plunger drive unit. Prior art can assemble the pump body and the plunger pump perpendicularly to the axial direction of the plunger. The inventor believes that there is a large room for improvement in the prior art. Summary of the invention

[0003] The purpose of the present invention is to make the pump head and the matching plunger rod replaceable parts, and to quickly and accurately install the segmented plunger rod and the components of the split plunger pump to the corresponding positions, so as to improve the assembly efficiency of the pump head assembly and reduce the time cost of disinfection and cleaning. Secondly, the installation condition requirements are reduced. For a plunger pump with a large structure, the pump body can be installed from multiple directions; for a pump head with a large structure and a large weight, its own gravity is used for disassembly, reducing the labor intensity of repeated disassembly and assembly. To this end, the present invention provides a split block detachable pump head with a slot-type plunger segmentation, including a pump head and a pump body, a plunger rod is provided inside the pump head and the pump body, the pump body includes a first pump body and a second pump body, a vertical guide mechanism is provided between the first pump body and the second pump body, the first pump body and the second pump body can move relative to each other according to the guide mechanism, and a stopper is provided at the end of the guide mechanism. The use of a vertical guide mechanism is conducive to utilizing the deadweight of the first pump body and the second pump body to separate and disassemble the plunger pump; the provision of a blocking body at the end of the guide mechanism is conducive to utilizing the deadweight of the first pump body and the second pump body for installation, so that the first pump body and the second pump body will not slip out of the guide mechanism, thereby ensuring that the two parts are installed quickly and accurately at the corresponding positions; and because a vertical guide mechanism is adopted and a blocking body is only provided at the end of the guide mechanism, when the installation conditions are limited, the first pump body and the second pump body can be installed from a horizontal direction.

[0004] Preferably, the guide mechanism includes a slide groove, which includes a first groove section and a second groove section, the second groove section is a vertical groove, and an angle α is formed between the first groove section and the second groove section. The angle α is an obtuse angle, so that when the first pump body and the second pump body are assembled in the horizontal direction, the guide mechanism also has a guiding function for the first pump body and the second pump body to be assembled in the vertical direction, which is conducive to the rapid assembly of the first pump body and the second pump body; further, the first pump body has a guide mechanism on both sides, and due to the angle α, the distance between the slide grooves on both sides of the guide mechanism gradually decreases at the second groove section, which can guide the first pump body and the second pump body to align to the assembly position; when the end stopper of the guide mechanism fails, the first pump body is clamped by the second pump bodies on both sides to prevent the first pump body and the pump head from sliding down or even falling; due to the angle α, when the first pump body is subjected to abnormal load or impact, the second pump body can bear loads in different directions.

[0005] Preferably, the guide mechanism further includes a slider, each slide groove corresponds to at least two sliders, and the first groove section and the second groove section are each matched with at least one slider. Furthermore, in order to improve the guiding effect of the guide mechanism, the slider adopts a V-block, and the slide groove adopts a V-shaped guide rail matched with the V-block. A slide groove corresponds to multiple sliders, which can increase the assembly connection points of the first pump body and the second pump body in the vertical direction, and avoid the relative tilt of the first pump body and the second pump body due to the smaller size of the slider relative to the pump body and the gap in the slide groove, which affects the parallelism of the first pump body and the second pump body during the splicing process; when the first pump body and the second pump body are spliced ​​in the horizontal direction, the V-shaped angle of the V-block has a horizontal guiding effect, which is different from the direction of the guide mechanism.

[0006] Preferably, the block body includes a first block body, and the first block body is provided at the bottom of the second pump body, and the first block body is located below the first pump body. The first block body can limit the vertical movement of the first pump body and the second pump body when the first pump body and the second pump body are vertically spliced; the upper surface of the first block body can be used as a reference surface to facilitate the subsequent splicing of the third pump body, so that the reciprocating channel of the plunger rod of the first pump body and the third pump body has a higher coaxiality; and the first block body has a guiding function when the first pump body and the second pump body are horizontally spliced.

[0007] Preferably, the block body also includes a second block body, the second block body is provided on the top of the first pump body, the second block body is located above the second pump body, a first fastener is vertically provided at the second block body, and the first fastener connects the first pump body and the second pump body. Since the first block body is provided below the first pump body, the first pump body is tightly attached to the first block body under the action of gravity, in order to avoid the first pump body from moving upwards due to abnormal load or impact, or the first pump body tilting upwards due to the excessive structure and weight of the pump head, the second block body is provided on the top of the first pump body and vertically connected to the second pump body, and in order to avoid excessive positioning in the vertical direction, the second block body is located above the second pump body with a gap.

[0008] Preferably, the pump body further comprises a third pump body, and an axial second fastener and a radial third fastener are provided between the second pump body and the third pump body. The second pump body and the third pump body are provided with fasteners in both the axial and radial directions, so as to facilitate the axial or radial splicing of the second pump body without being restricted by the assembly space conditions; and the second pump body can transmit loads in all directions to the third pump body, so as to ensure the reliability of the second pump body and the third pump body.

[0009] Preferably, the plunger rod comprises a first plunger section and a second plunger section connected to each other, and the first plunger section is provided with a semi-through groove extending in a radial direction at one end near the second plunger section, the semi-through groove comprises a notch portion and a groove bottom portion, and the semi-through groove is provided with a notch portion at one side near the plunger connecting section, and the width of the notch portion is smaller than the width of the groove bottom portion, and the second plunger section is provided with a clamping portion, and the clamping portion comprises a clamping joint portion and a clamping neck portion, the clamping joint portion and the groove bottom portion cooperate, and the clamping neck portion and the notch portion cooperate. The clamping joint portion and the groove bottom portion cooperate, that is, the axial clearance between the clamping joint portion and the groove bottom portion is as small as possible, so as to avoid the clamping joint portion from colliding with the structures on both sides due to inertia during the conversion of different strokes of the plunger rod, and the existence of the clearance will cause a stroke difference between the first plunger section and the clamping joint portion, and the fluid delivery at the pump head fails to respond to the power system of the plunger pump in time.

[0010] Preferably, the clamping part further includes a clamping shoulder, the side of the clamping shoulder close to the clamping neck contacts the first plunger section, and the diameter of the clamping shoulder matches the diameter of the first plunger section. The diameter of the clamping shoulder matches the diameter of the first plunger section, increasing the contact surface between the first plunger section and the second plunger section, increasing the oil film area in the gap, and fully absorbing the impact force generated by the movement of the plunger rod.

[0011] The present invention provides a detachable pump head with a segmented split block of a slot-type plunger, so that the pump head and the matching plunger rod become replaceable parts, and the segmented plunger rod and the components of the split plunger pump can be quickly and accurately installed in corresponding positions, thereby improving the assembly efficiency of the pump head assembly and reducing the time cost of disinfection and cleaning; reducing the requirements for installation conditions, and for a plunger pump with a large structure, the pump body can be installed from multiple directions; for a pump head with a large structure and a large weight, its own gravity is used for disassembly, reducing the labor intensity of repeated disassembly and assembly, and having the following beneficial effects: the first pump body consists of two The second pump body on the side is clamped to prevent the blocker from failing and the first pump body and pump head from sliding down or even falling off; when there is an abnormal load or impact at the pump head, the first pump body can be transmitted to the second pump body to bear the load in different directions; when a large-structure and heavy-weight pump head is installed, the first pump body is prevented from tilting and falling due to the forward center of gravity of the pump head; when the second plunger section is converted into different strokes of the plunger rod, the second plunger section is prevented from colliding with other structures due to inertia and causing impact, and there is a stroke difference between the first plunger section and the clamping joint, so that the fluid delivery at the pump head fails to respond in time to the power system of the plunger pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0015] Figure 3 It is a structural schematic diagram of the first pump body of the present invention;

[0016] Figure 4 It is a structural schematic diagram of the second pump body of the present invention;

[0017] Figure 5 It is a structural schematic diagram of the plunger rod of the present invention;

[0018] Figure 6 It is a schematic cross-sectional structural diagram of the plunger rod of the present invention;

[0019] Figure 7 It is a schematic cross-sectional structural diagram of the BB portion of the present invention;

[0020] Figure 8 It is a cross-sectional structural schematic diagram of CC of the present invention;

[0021] Explanation of the reference numerals: 1 first pump body; 101 second stopper body; 102 slider; 2 second pump body; 201 first groove section; 202 second groove section; 203 first stopper body; 3 third pump body; 4 plunger rod; 401 first plunger section; 402 second plunger section; 403 snap joint; 404 snap neck; 405 snap shoulder; 406 groove bottom part; 407 notch part; 5 pump head; 6 first fastener; 7 second fastener; 8 third fastener. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Embodiment 1

[0024] Combination Figure 1 and Figure 2 As shown, a slot-type plunger segmented split block detachable pump head includes a pump head 5 and a pump body, the pump head 5 and the pump body have a plunger rod 4 inside, the pump body includes a first pump body 1 and a second pump body 2, a vertical guide mechanism is provided between the first pump body 1 and the second pump body 2, the first pump body 1 and the second pump body 2 can move relative to each other according to the guide mechanism, and a stopper is provided at the end of the guide mechanism. The guide mechanism is a structural guide, a part of the pump body is provided with a slide groove, and a part of the pump body is provided with a slider 102.

[0025] The use of a vertical guide mechanism is conducive to utilizing the deadweight of the first pump body 1 and the second pump body 2 to separate and disassemble the plunger pump; the provision of a blocking body at the end of the guide mechanism is conducive to utilizing the deadweight of the first pump body 1 and the second pump body 2 for installation, so that the first pump body 1 and the second pump body 2 will not slip out of the guide mechanism, thereby ensuring that the two parts are installed quickly and accurately at the corresponding positions; and because a vertical guide mechanism is adopted and a blocking body is only provided at the end of the guide mechanism, when the installation conditions are limited, the first pump body 1 and the second pump body 2 can be installed from a horizontal direction.

[0026] like Figure 4 As shown, the guide mechanism includes a slide groove. In this embodiment, the slide groove is located in the second pump body 2. The slide groove includes a first groove section 201 and a second groove section 202. The second groove section 201 is a vertical groove. There is an angle α between the first groove section 201 and the second groove section 202. The angle α is an obtuse angle, so that when the guide mechanism is assembled in the horizontal direction, it also has a guiding function for the first pump body 1 and the second pump body 2 to be assembled in the vertical direction, which is conducive to the rapid assembly of the first pump body 1 and the second pump body 2; further, the first pump body 1 has a guide mechanism on both sides. Due to the existence of the angle α, the distance between the slide grooves on both sides of the guide mechanism gradually decreases at the second groove section 202, which can guide the first pump body 1 and the second pump body 2 to align to the assembly position; when the end stopper of the guide mechanism fails, the first pump body 1 is clamped by the second pump body 2 on both sides to prevent the first pump body 1 and the pump head 5 from sliding down or even falling; due to the existence of the angle α, when the first pump body 1 is subjected to abnormal load or impact, the second pump body 2 can bear loads in different directions.

[0027] like Figure 3 As shown, the guide mechanism also includes a slider 102. In this embodiment, the slider 102 is located on the first pump body 1, and each slide groove corresponds to at least two sliders 102. The first slot section 201 and the second slot section 202 are matched with at least one slider 102. Furthermore, in order to improve the guiding effect of the guide mechanism, the slider 102 adopts a V-block, and the slide groove adopts a V-shaped guide rail matched with the V-block. A slide groove corresponds to multiple sliders 102, which can increase the assembly connection points of the first pump body 1 and the second pump body 2 in the vertical direction, and avoid the relative tilt of the first pump body 1 and the second pump body 2 due to the smaller size of the slider 102 relative to the pump body and the gap in the slide groove, which affects the parallelism of the first pump body 1 and the second pump body 2 during the splicing process.

[0028] like Figure 4As shown, the block body includes a first block body 203, and the bottom of the second pump body 2 is provided with the first block body 203, and the first block body 203 is located below the first pump body 1. The first block body 203 can limit the vertical movement of the first pump body 1 and the second pump body 2 when the first pump body 1 and the second pump body 2 are vertically spliced; the upper surface of the first block body 203 can be used as a reference surface to facilitate the subsequent splicing of the third pump body 3, so that the reciprocating channel of the plunger rod 4 spliced ​​by the first pump body 1 and the third pump body 3 has a higher coaxiality; and the first block body 203 has a guiding function when the first pump body 1 and the second pump body 2 are horizontally spliced.

[0029] like Figure 3 As shown, the block body also includes a second block body 101, the second block body 101 is provided on the top of the first pump body 1, the second block body 101 is located above the second pump body 2, and the first fastener 6 is vertically provided at the second block body 101, and the first fastener 6 connects the first pump body 1 and the second pump body 2. Since the first block body 203 is provided below the first pump body 1, under the action of gravity, the first pump body 1 is tightly attached to the first block body 203, in order to avoid the first pump body 1 from moving upwards when subjected to abnormal load or impact, or the first pump body 1 tilting upwards due to the excessive structure and weight of the pump head 5, the second block body 101 is provided on the top of the first pump body 1 and is vertically connected to the second pump body 2, and in order to avoid excessive positioning in the vertical direction, the second block body 101 is located above the second pump body 2 and a gap is left.

[0030] like Figure 1 As shown, the pump body also includes a third pump body 3, and an axial second fastener 7 and a radial third fastener 8 are provided between the second pump body 2 and the third pump body 3. The second pump body 2 and the third pump body 3 have fasteners in both the axial and radial directions, which facilitates the axial or radial splicing of the second pump body 2 without being restricted by the assembly space conditions; and the second pump body 2 can transmit loads in all directions to the third pump body 3, ensuring the reliability of the second pump body 2 and the third pump body 3.

[0031] Combination Figure 5 and Figure 6As shown, the plunger rod 4 includes a first plunger section 401 and a second plunger section 402 connected to each other. The first plunger section 401 is provided with a half-through groove extending in the radial direction at one end close to the second plunger section 402. The half-through groove includes a notch portion 407 and a groove bottom portion 406. The half-through groove is close to the plunger connecting section and has a notch portion 407. The width of the notch portion 407 is smaller than the width of the groove bottom portion 406. The second plunger section 402 is provided with a clamping portion, which includes a clamping joint portion 403 and a clamping neck portion 404. The clamping joint portion 403 matches with the groove bottom portion 406, and the clamping neck portion 404 matches with the notch portion 407. The clamping joint part 403 and the groove bottom part 406 are matched with each other, that is, the axial clearance between the clamping joint part 403 and the groove bottom part 406 is as small as possible, so as to avoid that during the conversion of different strokes of the plunger rod 4, the clamping joint part 403 collides with the structures on both sides due to inertia and the existence of the clearance will cause a stroke difference between the first plunger section 401 and the clamping joint part 403, and the fluid delivery at the pump head 5 fails to respond to the power system of the plunger pump in time.

[0032] Combination Figure 6 , Figure 7 and Figure 8 As shown, the clamping part also includes a clamping shoulder 405, and the side of the clamping shoulder 405 close to the clamping neck 404 contacts the first plunger section 401, and the diameter of the clamping shoulder 405 matches the diameter of the first plunger section 401. The diameter of the clamping shoulder 405 matches the diameter of the first plunger section 401, increasing the contact surface between the first plunger section 401 and the second plunger section 402, increasing the oil film area in the gap, and fully absorbing the impact force generated by the movement of the plunger rod 4.

[0033] The present invention provides a detachable pump head with a segmented split block of a slot-type plunger, so that the pump head and the matching plunger rod become replaceable parts, and the segmented plunger rod and the components of the split plunger pump can be quickly and accurately installed in corresponding positions, thereby improving the assembly efficiency of the pump head assembly and reducing the time cost of disinfection and cleaning; reducing the requirements for installation conditions, and for a plunger pump with a large structure, the pump body can be installed from multiple directions; for a pump head with a large structure and a large weight, its own gravity is used for disassembly, reducing the labor intensity of repeated disassembly and assembly, and having the following beneficial effects: the first pump body consists of two The second pump body on the side is clamped to prevent the blocker from failing and the first pump body and pump head from sliding down or even falling off; when there is an abnormal load or impact at the pump head, the first pump body can be transmitted to the second pump body to bear the load in different directions; when a large-structure and heavy-weight pump head is installed, the first pump body is prevented from tilting and falling due to the forward center of gravity of the pump head; when the second plunger section is converted into different strokes of the plunger rod, the second plunger section is prevented from colliding with other structures due to inertia and causing impact, and there is a stroke difference between the first plunger section and the clamping joint, so that the fluid delivery at the pump head fails to respond in time to the power system of the plunger pump.

[0034] The above embodiments and / or implementation methods are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

Claims

1. A slot-type plunger segmented split block detachable pump head, comprising a pump head (5) and a pump body, wherein the pump head (5) and the pump body have a plunger rod (4) inside, characterized in that: The pump body comprises a first pump body (1) and a second pump body (2), a vertical guide mechanism is provided between the first pump body (1) and the second pump body (2), the first pump body (1) and the second pump body (2) are capable of relative movement according to the guide mechanism, and a stopper is provided at the end of the guide mechanism; The guide mechanism comprises a slide groove, the slide groove comprises a first groove section (201) and a second groove section (202), the second groove section (202) is a vertical groove, and an angle α is formed between the first groove section (201) and the second groove section (202).

2. A slot-type plunger segmented split block detachable pump head according to claim 1, characterized in that: The guide mechanism further comprises a sliding block (102), each of the sliding grooves corresponds to at least two sliding blocks (102), and the first groove section (201) and the second groove section (202) are each matched with at least one sliding block (102).

3. A slot-type plunger segmented split block detachable pump head according to claim 1, characterized in that: The baffle body comprises a first baffle body (203), the bottom of the second pump body (2) is provided with the first baffle body (203), and the first baffle body (203) is located below the first pump body (1).

4. A slot-type plunger segmented split block detachable pump head according to claim 3, characterized in that: The baffle body further comprises a second baffle body (101), the second baffle body (101) being arranged on the top of the first pump body (1), the second baffle body (101) being located above the second pump body (2), a first fastener (6) being vertically arranged on the second baffle body (101), the first fastener (6) connecting the first pump body (1) and the second pump body (2).

5. The slot-type plunger segmented split block detachable pump head according to claim 1, characterized in that: The pump body further comprises a third pump body (3), and an axial second fastener (7) and a radial third fastener (8) are provided between the second pump body (2) and the third pump body (3).

6. A slot-type plunger segmented split block detachable pump head according to claim 1, characterized in that: The plunger rod (4) comprises a first plunger section (401) and a second plunger section (402) connected to each other. A semi-through groove extending in a radial direction is provided at one end of the first plunger section (401) close to the second plunger section (402). The semi-through groove comprises a notch portion (407) and a groove bottom portion (406). The semi-through groove is provided with a notch portion (407) on one side close to the second plunger section (402). The width of the notch portion (407) is smaller than the width of the groove bottom portion (406). The second plunger section (402) is provided with a clamping portion. The clamping portion comprises a clamping joint portion (403) and a clamping neck portion (404). The clamping joint portion (403) matches with the groove bottom portion (406), and the clamping neck portion (404) matches with the notch portion (407).

7. A slot-type plunger segmented split block detachable pump head according to claim 6, characterized in that: The clamping portion further comprises a clamping shoulder (405), wherein a side of the clamping shoulder (405) close to the clamping neck (404) contacts the first plunger section (401), and a diameter of the clamping neck (404) matches a diameter of the first plunger section (401).

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